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1 vote
1k views

Hi, I have a problem with the Y-axis mouse scroll sensitivity regarding values, if you take a look here, you can see that it will take a lot of separate scrolls to reach the desired Y-axis value
due to a low level of sensitivity
how can I solve this problem

P

my code

“`

        <s:SciChartSurface x:Name="scs" 
                           RenderableSeries="{s:SeriesBinding Series}" 
                           ViewportManager="{Binding ViewportManager}"
                           BorderThickness="2,2,2,0"
                           s:VisualXcceleratorEngine.EnableImpossibleMode="True"
                           LeftAxesPanelTemplate="{StaticResource YAxesPanel}"
                           Grid.Row="0"   
                           MouseDoubleClick="OnChartMouseDown">


            <s:SciChartSurface.XAxes>
                <!-- Hidden Axis that tracks the data -->
                <s:NumericAxis AutoRange="Always"
                               DrawMinorGridLines="False"
                               DrawMinorTicks="False"
                               DrawMajorGridLines="False"
                               DrawMajorTicks="False"
                               Visibility="Collapsed"
                                />
                <!--Hidden Axis that track the annotations' locations (All the added annotations have the same XAxis Id-->
                <s:NumericAxis Name="SharedXAxisCommon"  
                                AutoRange="Never"
                                VisibleRangeLimit="0,10"
                                Height="1"
                                Visibility="Hidden"  
                                Id="CommonID_X"/>
            </s:SciChartSurface.XAxes>

            <s:SciChartSurface.YAxes >
                <s:NumericAxis AutoRange="Never"
                               AutoTicks="True"
                               DrawMinorGridLines="False"
                               DrawMinorTicks="False"
                               DrawMajorGridLines="False"
                               DrawMajorTicks="True"
                               VisibleRange="0,8128000"
                               Visibility="Collapsed"/>
            </s:SciChartSurface.YAxes>
            <s:SciChartSurface.ChartModifier>
                <s1:ModifierGroup>
                    <s1:YAxisDragModifier/>
                    <s:SeriesSelectionModifier >
                        <s:SeriesSelectionModifier.SelectedSeriesStyle>
                            <Style TargetType="s:BaseRenderableSeries">
                            </Style>
                        </s:SeriesSelectionModifier.SelectedSeriesStyle>
                    </s:SeriesSelectionModifier>
                </s1:ModifierGroup>
            </s:SciChartSurface.ChartModifier>

        </s:SciChartSurface>
        <Grid>
            <Grid.RowDefinitions>
                <RowDefinition Height="0.3*"/>
                <RowDefinition Height="2*"/>
            </Grid.RowDefinitions>
            <TextBlock Grid.Row="1" x:Name="InportValueTextBlock" Text="{Binding InportValue}" Margin="20,0,0,0" FontSize="14"/>
        </Grid>
    </Grid>

“`

1 vote
1k views

Hi, I have problem with the Y axis values, if you take a look here,

image of scichart surface

the numbers are not intuitive is there a way to fix it?

enter image description here

I tried to set the AutoTicks=”True” but it did nothing

the code

“`

<UserControl.Resources>
    <BooleanToVisibilityConverter x:Key="b2vc"/>
    <local:BoolToAxisAutoRangeConverter x:Key="AutoRangeConverter" />
    <local:StarsConverter x:Key="conv"/>
    <ItemsPanelTemplate x:Key="YAxesPanel" >
        <Grid local:GridHelpers.RowCount="{Binding RowsCount}"
              local:GridHelpers.StarRows="{Binding RowsCount, Converter={StaticResource conv}, Mode=OneWay}"
              local:GridHelpers.ColumnCount="1"

              >
        </Grid>
    </ItemsPanelTemplate>
    <Style x:Key="MinorTickLineStyle" TargetType="Line">
        <Setter Property="Stroke" Value="White"/>
    </Style>

</UserControl.Resources>



<Grid x:Name="MainGrid">
    <Grid.ColumnDefinitions>
        <ColumnDefinition Width="*"/>
    </Grid.ColumnDefinitions>

    <!-- Toolbar -->
    <Border Style="{DynamicResource OriginalBorderBright}" BorderThickness="0" Canvas.ZIndex="9999" Visibility="Collapsed">
        <StackPanel Orientation="Vertical">
            <RadioButton x:Name="RunBtn" Command="{Binding RunCommand}" IsChecked="True" Visibility="Hidden"/>
            <RadioButton x:Name="PauseBtn" Visibility="Hidden"/>
        </StackPanel>
    </Border>

    <!-- Chart Surface -->
    <Grid Grid.Column="1" >

        <s:SciChartSurface x:Name="scs" 
                           RenderableSeries="{s:SeriesBinding Series}" 
                           ViewportManager="{Binding ViewportManager}"
                           BorderThickness="2,2,2,0"
                           s:VisualXcceleratorEngine.EnableImpossibleMode="True"
                           LeftAxesPanelTemplate="{StaticResource YAxesPanel}"
                           Grid.Row="0"   
                           MouseDoubleClick="OnChartMouseDown">


            <s:SciChartSurface.XAxes>
                <!-- Hidden Axis that tracks the data -->
                <s:NumericAxis AutoRange="Always"
                               DrawMinorGridLines="False"
                               DrawMinorTicks="False"
                               DrawMajorGridLines="False"
                               DrawMajorTicks="False"
                               Visibility="Collapsed"
                                />
                <!--Hidden Axis that track the annotations' locations (All the added annotations have the same XAxis Id-->
                <s:NumericAxis Name="SharedXAxisCommon"  
                                AutoRange="Never"
                                VisibleRangeLimit="0,10"
                                Height="1"
                                Visibility="Hidden"  
                                Id="CommonID_X"/>
            </s:SciChartSurface.XAxes>

            <s:SciChartSurface.YAxes >
                <s:NumericAxis AutoRange="Never"
                               AutoTicks="True"
                               DrawMinorGridLines="False"
                               DrawMinorTicks="False"
                               DrawMajorGridLines="False"
                               DrawMajorTicks="True"
                               VisibleRange="0,8128000"
                               Visibility="Collapsed"/>
            </s:SciChartSurface.YAxes>
            <s:SciChartSurface.ChartModifier>
                <s1:ModifierGroup>
                    <s1:YAxisDragModifier/>
                    <s:SeriesSelectionModifier >
                        <s:SeriesSelectionModifier.SelectedSeriesStyle>
                            <Style TargetType="s:BaseRenderableSeries">
                            </Style>
                        </s:SeriesSelectionModifier.SelectedSeriesStyle>
                    </s:SeriesSelectionModifier>
                </s1:ModifierGroup>
            </s:SciChartSurface.ChartModifier>

        </s:SciChartSurface>
        <Grid>
            <Grid.RowDefinitions>
                <RowDefinition Height="0.3*"/>
                <RowDefinition Height="2*"/>
            </Grid.RowDefinitions>
            <TextBlock Grid.Row="1" x:Name="InportValueTextBlock" Text="{Binding InportValue}" Margin="20,0,0,0" FontSize="14"/>
        </Grid>
    </Grid>


    <Border Grid.Column="1" Style="{DynamicResource OriginalBorderBright}" Visibility="{Binding IsLoading, Mode=OneWay, Converter={StaticResource b2vc}}">
        <StackPanel Orientation="Vertical" HorizontalAlignment="Center" VerticalAlignment="Center">
            <ProgressBar Background="Transparent" BorderThickness="0"  HorizontalAlignment="Center" IsIndeterminate="True" Height="10" Width="{Binding ActualWidth, Mode=OneWay, ElementName=Test}"/>
            <TextBlock x:Name="Test" Text="{Binding LoadingMessage, Mode=OneWay}" FontSize="16" Foreground="{DynamicResource ControlDefaultForeground}" Margin="0,10" TextAlignment="Center" Opacity="0.7"/>
        </StackPanel>
    </Border>
</Grid>

“`

0 votes
12k views

We have a sciChart surface in a fragment that has a scrollable view. We enabled tooltips using custom cursor modifier on the sci chart to show the values as the selection (touching a point in the chart object).

When we are moving the selection on x-axis tooltip sometimes it works fine and disappears when the selection is taken out. But sometimes it get freezed. At the same time, if we touch and move the selection in a vertical axis, tooltip box gets stuck and does not disappear even when the selection is taken out.

Tried so far:
We tried to replicate the issue in landscape mode and it works fine.
If we make the chart object to the whole page view, tool tips appears and disappears as expected.
But when the same used in portrait mode as a part of fragment (50% of screen) , problem arises

Steps to reproduce:
Have a chart object in a scrollable view.
Make sure the chart object doesnot appear on the fully screen without scrolling.
Now scroll to see the chart object.
Try to see the tooltip and move the selection in vertical axis.

  • Krish J asked 11 months ago
  • last active 11 months ago
1 vote
7k views

Hi, I asked a question a few days ago. I will try to explain better what I meant.
I get data in real time and I only care about the Y values.
My problem is that I don’t want to move forward on the X axis – but stay on a defined range
(If I move forward on the X-axis and I want to follow the graph I drew, I must define:

XAxis.AutoRange = SciChart.Charting.Visuals.Axes.AutoRange.Always;

And this means that I won’t be able to zoom properly unless I stop receiving the data, which is unacceptable.
So unless there is a way to set AutoRange = Always and still enable good zoom (similar to ZoomExtentsY for the X-axis), I need an option to keep seeing the graph all the time – without having to set AutoRange = Always so I can zoom.
I think the solution is to create a fixed range on the X-axis that the data will only be displayed on but before I implement it myself, I want to know if there is a better or built-in way to do this.

Just to make sure I’m understood, I want it to behave like in the attached images (the X-axis stays in the same range and the graph “move” to the left whenever new points enter from the right:

1 vote
6k views

I get data in real time and I only care about the Y values.
I want to define a range of values on the X axis that will be fixed (but if I want I can change it from time to time)
For example: define that the range will be from 0 to 1000 and all the information that arrives will be displayed only in this range. And when I pass the 1000 points it will simply “push” the older points aside.
For example: the point located at X=2 will move to X=1, 1 will move to 0 and 0 will leave the graph…
During the program I want of course to give the user the possibility to change this range if he wants.
The optimal way for me was to define a range of the X axis and when I do Append(), add only Y values so that they enter the next place on the X axis in order…
Is there an option in the API to set this? If not, how is it recommended to do it?

1 vote
8k views

I’m having issues with displaying my vertical annotations on my chart. Below is the code for creating the annotation and adding it to the chart.

var annotationLine = new VerticalLineAnnotation();
annotationLine.XAxisId = XAxisID;
annotationLine.YAxisId = YAxisID;
annotationLine.Stroke = new SolidColorBrush(Colors.Blue);
annotationLine.StrokeThickness = 2;
annotationLine.IsHidden = false;
annotationLine.AnnotationCanvas = AnnotationCanvas.BelowChart;
annotationLine.Y1 = 0;
annotationLine.Y2 = ControlHeight;
annotationLine.X1 = xValues[i];
Surface.Annotations.Add(annotationLine);

I have verified that the XAxisId and the YAxisId are correct and match the id of the only axes that I have on the chart
I have verified that the xValues[i] is a valid value on the chart and within the bounds of the viewport

The tricky part here is that I am reading live streaming EEG data from a device and inserting manual triggers into the data. This works fine and the annotations appear in the chart as they are within the bounds of the chart.
I then record that data to a file (currently csv but will be doing EDF as soon as I get this figured out) where the annotation data is present (verified)
It’s when I try to read the file into my application that I can’t get the annotations to appear on the SciChart. I’m using the code above for both the live streaming data (working) and the file reading (not working) so I’m really baffled by this and could use any insight anyone has.

Thank you

1 vote
2k views

Hello,
I receive data at a very high speed from a hardware board and need to plot it on a SciChartSurface.
the sample is FastLineRenderableSeries

   <s:SciChartSurface x:Name="sciChart0" MaxFrameRate="5" 
               s:VisualXcceleratorEngine.AvoidBlacklistedGpu="False"
                s:VisualXcceleratorEngine.IsEnabled="True" 
                ForceCursor="True"
                s:VisualXcceleratorEngine.FallbackType="{x:Type s:HighQualityRenderSurface}"
                s:VisualXcceleratorEngine.DowngradeWithoutException="False" 
                s:VisualXcceleratorEngine.EnableImpossibleMode="True" 
                RenderPriority="Normal">
         <s:SciChartSurface.RenderableSeries>
                  <s:FastLineRenderableSeries   x:Name="RenderableSeries1" DataSeries="{Binding Series, 
                     Mode=TwoWay, UpdateSourceTrigger=PropertyChanged}"/>
           </s:SciChartSurface.RenderableSeries>

    </s:SciChartSurface>

while Series is XyDataSeries<double, double>
I created a thread that opens a socket (on port 3490) and all the information it receives it draws on the graph.
The problem is that if some time passes, and I stop the transmission of the data, it still draws what it has left to draw to “reach the end of the buffer”. It makes me realize that he is not keeping up with the transmission and it takes him more time to draw than the time it takes for the information to arrive.
(If I start the transmission and let it draw, and then stop quickly, it does stop immediately. The problem is if a lot of information arrives over time).
I wanted to ask if there is a way to speed it up in some way? (Maybe by giving up the plotting quality?)
Since I need to draw the information that arrives in real time and not information that arrived a few seconds ago…
The drawing is done by a separate thread:

i’m using Append():

Series.Append(double[XPoints] array, double[YPoints] array);
0 votes
11k views

I have some FastLineRenderableSeries that display the user’s real time data.
I let the user set a trigger for a specific line and when the line crosses the trigger value the SciChartSurface freezes.
I would like to add that when this happens, the activated point will be highlighted or mark in a way the user will see exactly where it is…
Is there a simple way to do this?

(the orange line is the trigger…)

0 votes
9k views
  1. Big Sur 11.6.
  2. Monterey 12.2.1
  3. Catalina 10.15.7 (late 2013 model)
    ![enter image description here][1]

sciChart version 1.4.1611

If you open the chart in the Firefox browser, then, strangely enough, everything works.

Is it related to the version of the library?

0 votes
12k views

I want to build a Stacked Column Side by Side Chart by referring to the reference here.

However, the program could not enter line #41. It just stuck there and the column chart could not be shown.

My code:

export class OutputAmplitudeComponent implements OnInit, OnDestroy {

constructor(@Inject(SETTING_SERVICE) private settingService: SettingService, private cdr: ChangeDetectorRef) {}

ngOnInit() {        
                this.settingService.registerSetting(HarmonicAmpSetting).pipe(takeUntil(this.ngUnsubHarmonicData)).subscribe(setting => {
                    const OutputAmplitudeData = setting.value;

                    for (let x = 1; x < this.numberOfOutput; x++) {
                        if (this.OutputMode === 'Voltage') {
                            if (phaseNum === 1) {
                                this.ampSource.data[x-1].voltage1 = OutputAmplitudeData[x];
                            } else if (phaseNum === 2) {
                                this.ampSource.data[x-1].voltage2 = OutputAmplitudeData[x];
                            } else if (phaseNum === 3) {
                                this.ampSource.data[x-1].voltage3 = OutputAmplitudeData[x]; 
                            }
                        } else if (this.OutputMode === 'Current') {
                            if (phaseNum === 1) {
                                this.ampSource.data[x-1].current1 = OutputAmplitudeData[x];
                            } else if (phaseNum === 2) {
                                this.ampSource.data[x-1].current2 = OutputAmplitudeData[x];
                            } else if (phaseNum === 3) {
                                this.ampSource.data[x-1].current3 = OutputAmplitudeData[x];
                            }
                        }
                        this.sciChartInit(x);
                    }   
                });
            }   


async sciChartInit(x:number) {

    var phase1 = parseFloat(this.ampSource.data[x-1].voltage1);
    var phase2 = parseFloat(this.ampSource.data[x-1].voltage2);
    var phase3 = parseFloat(this.ampSource.data[x-1].voltage3);

    //stuck here

    const { wasmContext, sciChartSurface } = await SciChartSurface.create("chart");

    const xAxis = new NumericAxis(wasmContext);
    sciChartSurface.xAxes.add(xAxis);
    const yAxis = new NumericAxis(wasmContext);
    sciChartSurface.yAxes.add(yAxis);

    const dataSeries1 = new XyDataSeries(wasmContext, { xValues:[x], yValues:[phase1], dataSeriesName: "Phase 1" });
    const dataSeries2 = new XyDataSeries(wasmContext, { xValues:[x], yValues:[phase2], dataSeriesName: "Phase 2" });
    const dataSeries3 = new XyDataSeries(wasmContext, { xValues:[x], yValues:[phase3], dataSeriesName: "Phase 3" });

    const rendSeries1 = new StackedColumnRenderableSeries(wasmContext);
    rendSeries1.fill = "#dc443f";
    rendSeries1.stroke = "black";
    rendSeries1.strokeThickness = 1;
    rendSeries1.dataSeries = dataSeries1;
    rendSeries1.rolloverModifierProps.markerColor = "#b83735";
    rendSeries1.rolloverModifierProps.tooltipColor = "#dc443f";
    rendSeries1.rolloverModifierProps.tooltipTextColor = "#fff";
    rendSeries1.stackedGroupId = "one";

    const rendSeries2 = new StackedColumnRenderableSeries(wasmContext);
    rendSeries2.fill = "#aad34f";
    rendSeries2.stroke = "black";
    rendSeries2.strokeThickness = 1;
    rendSeries2.dataSeries = dataSeries2;
    rendSeries2.rolloverModifierProps.markerColor = "#87a73e";
    rendSeries2.rolloverModifierProps.tooltipColor = "#aad34f";
    rendSeries2.rolloverModifierProps.tooltipTextColor = "#000";
    rendSeries2.stackedGroupId = "two";

    const rendSeries3 = new StackedColumnRenderableSeries(wasmContext);
    rendSeries3.fill = "#8562b4";
    rendSeries3.stroke = "black";
    rendSeries3.strokeThickness = 1;
    rendSeries3.dataSeries = dataSeries3;
    rendSeries3.rolloverModifierProps.markerColor = "#715195";
    rendSeries3.rolloverModifierProps.tooltipColor = "#8562b4";
    rendSeries3.rolloverModifierProps.tooltipTextColor = "#fff";
    rendSeries3.stackedGroupId = "three";

    const verticallyStackedColumnCollection = new StackedColumnCollection(wasmContext);
    verticallyStackedColumnCollection.dataPointWidth = 0.5;
    verticallyStackedColumnCollection.add(rendSeries1, rendSeries2, rendSeries3);
    verticallyStackedColumnCollection.animation = new ScaleAnimation({ duration: 1000, fadeEffect: true });

    sciChartSurface.renderableSeries.add(verticallyStackedColumnCollection);

    sciChartSurface.chartModifiers.add(new ZoomExtentsModifier(), new ZoomPanModifier(), new MouseWheelZoomModifier());

    sciChartSurface.zoomExtents();

    sciChartSurface.chartModifiers.add(new RolloverModifier({ rolloverLineStroke: "#228B22" }));
    sciChartSurface.chartModifiers.add(
        new LegendModifier({
            placement: ELegendPlacement.TopRight,
            orientation: ELegendOrientation.Horizontal,
            showLegend: true,
            showCheckboxes: true,
            showSeriesMarkers: true
        })
    );
    return { wasmContext, sciChartSurface };
} }

.
.
The data needed in the chart is identified and no error is shown.
Any idea on the solution?

Thank you.

  • ETS Ong asked 3 years ago
  • last active 3 years ago
0 votes
0 answers
6k views

Hi,
I am new to SciChart and have followed the instructions of tutorial 2 to my own app.

I imported all libraries and then added the code to display a surface (as in tutorial 2) into a layout however nothing displays.

Notes:
– I have activated my license
– If I attempt to run the tutorial 2 code off GitHub the app crashes and no errors displayed in the log.

1 vote
8k views

Hello SciChart Team,

We are using SciChart v6.1.1.13156 since about a year in our main software that is used by customers worldwide.
The SciChartSurface-Style that all charts use is configured to use the VisualXcceleratorEngine (in DirectX9 mode, as some customers had problems with invisible charts on specific older intel graphics chipsets).

In the last weeks we had several inqiuiries from customers (from Japan, Korea), that the charts in their software do not update when adding new values, the chart is only updated when minimizing and then showing the window again. Another issue was that the X-Axis was updated fluently but the chart (line-chart) only very irregularly (about 2-3 times in a 30sec measurement which provides a value every 20msec). All of these customers use new laptops with 11th generation Intel CPUs. One of these had an Nvidia-graphics card installed an when forcing to use it with our software the charts worked perfectly.

We added an option in our software to Enable Software Rendering (Highspeed Renderer) to increase compatibility when having the above mentioned issues as we thought that it has to do with the VisualXcceleratorEngine, but this did not change anything unfortunately.

We want (and have) to solve this problem as this breaks the functionality of our software with some of our biggest customers.

Best regards,
Oliver from Cologne Germany

0 votes
6k views

Hello Scichart Team again,

I’m trying to replicate anything like this (check Screenshot_2.png).

I can update the scichart background, but I just wanted to have a single color in the background, but it seems that there is an overlap of colors in X / Y as I show in the next printscreen (check Screenshot_3.png)

How I can solve this?

Waiting for feedback.

Many thanks,

Pedro Cruz

0 votes
13k views

Hello,

I use a Scrollbar/Surface combination to have an overview over several RenderSeries. Since I need individual scaling on each Series I also add 1 YAxis per Renderseries

The problem is that (even when disabling everything drawing related to an axis) adding an axis adds 2 px of white space where the axis would be.

In the attached image you can see an example with 15 axes added.

Here’s the code adding the RenderSeries and the axis (we already tried so many things to make the whitespace disappear as you can see in “createNewAxis”):

public void AddSciRenderSeries(FastLineRenderableSeries renderableSeries)
{
    if (OverviewChartSurface.RenderableSeries.Contains(renderableSeries))
        return;

    OverviewChartSurface.YAxes.Add(createNewAxis(renderableSeries.YAxisId));
    OverviewChartSurface.RenderableSeries.Add(renderableSeries);
    OverviewChartSurface.ZoomExtents();
}

private NumericAxis createNewAxis(string channelId)
{
    NumericAxis scrollerYAxis1 = new NumericAxis();
    scrollerYAxis1.AutoRange = SciChart.Charting.Visuals.Axes.AutoRange.Always;

    scrollerYAxis1.DrawMajorBands = false;
    scrollerYAxis1.DrawMajorGridLines = false;
    scrollerYAxis1.DrawMajorTicks = false;
    scrollerYAxis1.DrawMinorGridLines = false;
    scrollerYAxis1.DrawMinorTicks = false;
    scrollerYAxis1.DrawLabels = false;

    scrollerYAxis1.BorderBrush = Brushes.Red;
    scrollerYAxis1.FontSize = 0.1;
    Trace.WriteLine("AxisOffset: " + scrollerYAxis1.GetAxisOffset());
    scrollerYAxis1.Padding = new Thickness(0);
    scrollerYAxis1.Margin = new Thickness(0);
    scrollerYAxis1.BorderThickness = new Thickness(0);
    scrollerYAxis1.Id = channelId;

    return scrollerYAxis1;
}

What shall we do to remove the gap on the right?

Thanks for your help!

0 votes
6k views

Dear sir,

I’m trying SciChartSurface.
I wanna have a Chart updating per minute,
X-Axis means time, Y-Axis means products,
and every product has a multi-color bar which I can build it in the viewmodel.
Every product’s name should be the position between two lines.
Can SciChart do that…? Cause I’m using surface with numericAxis, but the product name is always next to the line, not between two lines.

  • Wade Yao asked 3 years ago
  • last active 3 years ago
0 votes
9k views

Dear SciChart people,

when trying to export a SciChartSurface instance present in a view (i.e. modified by zoom and series visibility settings etc. done by the user in the UI), it seems that its member functions
ExportToFile
may only be called from the UI thread – invocations from a background thread yield an InvalidOperation exception

So for the period of exporting, the application stays unresponsive even when “useXamlRenderSurface=false” is set in the call.

This does not change when trying to clone the surface, using a derived SciChartSurface class (still in in the view) that allows for cloning (cf . the SciChartEx class in the “CreateAnnotationsDynamically” SciChart example): calling CreateCloneSurfaceInMemory is still only allowed on the UI thread.
If one accepts this, but tries to continue with a background thread on the cloned surface’ s ExportToFile instance, it still mandates using the UI thread, so no escape …

Any ideas to go away from the UI thread in this scenario?

Thanks a lot.

0 votes
0 answers
10k views

I have the following SciChart surface in my program:

<s:SciChartSurface
            Name="Chart"
            Margin="0,0,4,0"
            Padding="0"
            BorderThickness="0"
            GridLinesPanelStyle="{StaticResource SciChartBackgroundStyle}">
            <s:SciChartSurface.RenderableSeries>
                <s:FastLineRenderableSeries
                    x:Name="LevelSeries"
                    DataSeries="{Binding Series}"
                    ResamplingMode="None"
                    Stroke="{StaticResource LabelColor}"
                    StrokeThickness="1" />
            </s:SciChartSurface.RenderableSeries>
        </s:SciChartSurface.RenderableSeries>

         <!-- Axis and modifiers snipped for readability -->
</s:SciChartSurface>

In my ViewModel I have a public XyDataSeries<DateTime, short> Series property. We do custom decimation on zoom, so when the chart is zoomed, the Series is cleared and repopulated with Series.Append in chunks.

My issue is that some of the time, the final .Append does not trigger a redraw. The data is in the series, the mouse rollover works and I can “see” the data, but it isn’t drawn.

Forcing the redraw using ViewportManager.InvalidateElement(); works but i would obviously prefer to not have to do that.

I would estimate that this issue happens ~1/5 times.

I’ve attached a gif showing the issue.

0 votes
10k views

I am getting a weird exception when appending data to my dataseries.

 SciChartSurface didn't render, because an exception was thrown:
  Message: Specified argument was out of the range of valid values. (Parameter 'You must have a width and height > than 0.')

  Stack Trace:    at geq.pne(Int32 dbt, Int32 dbu, Int32 dbv, Int32 dbw)
   at geq..ctor(Int32 dak, Int32 dal, Int32 dam, gfb dan)
   at SciChart.Charting.Common.Helpers.Strategies.CommonRenderContextDrawingStrategy.DrawPointMarkers(IRenderContext2D context, Color strokeColor, Color strokeBrush, Size spriteSize, Action`3 renderToCacheMethod)
   at SciChart.Charting.Visuals.PointMarkers.BitmapSpriteBase.CreateSprite(IRenderContext2D context, Color strokeColor, Color strokeBrush)
   at SciChart.Charting.Visuals.PointMarkers.BitmapSpriteBase.yry(IRenderContext2D bbr, Nullable`1 bbs, Nullable`1 bbt)
   at SciChart.Charting.Visuals.PointMarkers.BitmapSpriteBase.BeginBatch(IRenderContext2D context, Nullable`1 strokeColor, Nullable`1 fillColor)
   at vra.Begin(IPathColor pathColor, Double startX, Double startY, Int32 index)
   at wbb.udm(Double hmn, Double hmo, Double hmp, Double hmq, Int32 hmr)
   at vpx.ett(wba agi, IPointSeries agj, ICoordinateCalculator`1 agk, ICoordinateCalculator`1 agl)
   at SciChart.Charting.Visuals.RenderableSeries.DrawingProviders.LegacyPointMarkerRenderer.Draw(IRenderContext2D renderContext, IPointSeries pointSeries, IRenderPassData renderPassData)
   at SciChart.Core.Extensions.EnumerableExtensions.ForEachDo[T](IEnumerable`1 enumerable, Action`1 operation)
   at SciChart.Charting.Visuals.RenderableSeries.BaseRenderableSeries.SciChart.Charting.Visuals.IDrawable.OnDraw(IRenderContext2D renderContext, IRenderPassData renderPassData)
   at vsb.ixq(RenderPassInfo caj, IRenderContext2D cak, Int32 cal)
   at vsb.ixp(ISciChartSurface cag, RenderPassInfo cah, IRenderContext2D cai)
   at vsb.RenderLoop(IRenderContext2D renderContext)
   at SciChart.Charting.Visuals.SciChartSurface.DoDrawingLoop()

I have no idea what width and height it is referring to. My SciChartSurface height and width are NaN but the actual height and width are 509 and 1007. The despite the exception I am still getting the graph to render correctly. Does anyone know how to track this down?

0 votes
0 answers
13k views

I am creating a chart to represent certain vitals. The code is almost identical to the Vitals Monitoring Demo application, the difference being
I added some Line and text annotations. I am appending points to the data series every 100ms. I have verified that the anomalous behavior is not caused due to wrong data being provided,
leading me to believe it must be a bug within SciChart. I have attached screenshots of this anomalous behavior. Any help would be greatly appreciated. Thank you.

Edit: This happens randomly, ie it performs normally without glitches on application startup but misbehaves after left running for a while.
I also observed that when I call .clear() on the XyDataSeries objects, the graph returns to normalcy, but only until FIFO_CAPACITY is reached. It then goes back to wreaking havoc.
I have added sample data (data.txt) to the question for reference, and screenshots of Expected behavior and the abnormal behavior in question.

Gif of the problem is here: https://imgur.com/7SO4DFb

Code used for setting up the chart:

     `SciChartBuilder sciChartBuilder;
     static ISciChartSurface chart;
     public final static XyDataSeries<Double, Double> pressureDataSeries = newDataSeries(FIFO_CAPACITY);
     public final static XyDataSeries<Double, Double> pressureSweepDataSeries = newDataSeries(FIFO_CAPACITY);
     public final static XyDataSeries<Double, Double> flowDataSeries = newDataSeries(FIFO_CAPACITY);
     public final static XyDataSeries<Double, Double> flowSweepDataSeries = newDataSeries(FIFO_CAPACITY);
     public final static XyDataSeries<Double, Double> volumeDataSeries = newDataSeries(FIFO_CAPACITY);
     public final static XyDataSeries<Double, Double> volumeSweepDataSeries = newDataSeries(FIFO_CAPACITY);
     public final static XyDataSeries<Double, Double> lastPressureSweepDataSeries = newDataSeries(1);
     public final static XyDataSeries<Double, Double> lastFlowDataSeries = newDataSeries(1);
     public final static XyDataSeries<Double, Double> lastVolumeDataSeries = newDataSeries(1);
     private static XyDataSeries<Double, Double> newDataSeries(int fifoCapacity) {
    final XyDataSeries<Double, Double> ds = new XyDataSeries<>(Double.class, Double.class);
    ds.setFifoCapacity(fifoCapacity);
    return ds;
}
 private void setUpChart() {                          // Called from onCreate()
    try {
        SciChartSurface.setRuntimeLicenseKey("");
    } catch (Exception e) {
        e.printStackTrace();
    }
    final String pressureId = "pressureId";
    final String flowId = "flowId";
    final String volumeId = "volumeId";
    SciChartBuilder.init(this);
    sciChartBuilder = SciChartBuilder.instance();
    chart = new SciChartSurface(this);
    LinearLayout chartLayout = findViewById(R.id.charts);
    chartLayout.addView((View) chart, 0);
    final NumericAxis xAxis = sciChartBuilder.newNumericAxis()
            .withVisibleRange(0, 10)
            .withAutoRangeMode(AutoRange.Never)
            .withAxisBandsFill(5)
            .withDrawMajorBands(true)
            .withAxisId("XAxis")
            .build();

    DoubleValues pressureRange = new DoubleValues(); pressureRange.add(-10); pressureRange.add(65);
    DoubleValues flowRange = new DoubleValues(); flowRange.add(-150); flowRange.add(+250);
    DoubleValues volumeRange = new DoubleValues(); volumeRange.add(-500); volumeRange.add(1000);

    final NumericAxis yAxisPressure = generateYAxis(pressureId, getMinMaxRange(pressureRange));
    final NumericAxis yAxisFlow = generateYAxis(flowId, getMinMaxRange(flowRange));
    final NumericAxis yAxisVolume = generateYAxis(volumeId, getMinMaxRange(volumeRange));

    UpdateSuspender.using(chart, new Runnable() {
        @Override
        public void run() {
            Collections.addAll(chart.getAnnotations(),
                    sciChartBuilder.newTextAnnotation()
                            .withXAxisId("XAxis")
                            .withYAxisId(pressureId)
                            .withY1(0d)
                            .withFontStyle(18, ColorUtil.White)
                            .withText(" Pressure (cm H2O)")
                            .build(),
                    generateBaseLines(pressureId),
                    sciChartBuilder.newTextAnnotation()
                            .withXAxisId("XAxis")
                            .withYAxisId(flowId)
                            .withY1(0d)
                            .withFontStyle(18, ColorUtil.White)
                            .withText(" Flow (lpm)")
                            .build(),
                    generateBaseLines(flowId),
                    sciChartBuilder.newTextAnnotation()
                            .withXAxisId("XAxis")
                            .withYAxisId(volumeId)
                            .withY1(0d)
                            .withFontStyle(18, ColorUtil.White)
                            .withText(" Volume (ml)")
                            .build(),
                    generateBaseLines(volumeId)
            );
            Collections.addAll(chart.getXAxes(), xAxis);
            Collections.addAll(chart.getYAxes(), yAxisPressure, yAxisFlow, yAxisVolume);
            Collections.addAll(chart.getRenderableSeries(),
                    MainActivity.this.generateLineSeries(pressureId, pressureDataSeries, sciChartBuilder.newPen().withColor(Color.parseColor("#00ff00")).withThickness(1.5f).build()),
                    MainActivity.this.generateLineSeries(pressureId, pressureSweepDataSeries, sciChartBuilder.newPen().withColor(Color.parseColor("#00ff00")).withThickness(1.5f).build()),
                    MainActivity.this.generateScatterForLastAppendedPoint(pressureId, lastPressureSweepDataSeries),

                    MainActivity.this.generateLineSeries(flowId, flowDataSeries, sciChartBuilder.newPen().withColor(Color.parseColor("#ff6600")).withThickness(1.5f).build()),
                    MainActivity.this.generateLineSeries(flowId, flowSweepDataSeries, sciChartBuilder.newPen().withColor(Color.parseColor("#ff6600")).withThickness(1.5f).build()),
                    MainActivity.this.generateScatterForLastAppendedPoint(flowId, lastFlowDataSeries),

                    MainActivity.this.generateLineSeries(volumeId, volumeDataSeries, sciChartBuilder.newPen().withColor(Color.parseColor("#FFEA00")).withThickness(1.5f).build()),
                    MainActivity.this.generateLineSeries(volumeId, volumeSweepDataSeries, sciChartBuilder.newPen().withColor(Color.parseColor("#FFEA00")).withThickness(1.5f).build()),
                    MainActivity.this.generateScatterForLastAppendedPoint(volumeId, lastVolumeDataSeries)
            );
            chart.setLayoutManager(new DefaultLayoutManager.Builder().setRightOuterAxesLayoutStrategy(new RightAlignedOuterVerticallyStackedYAxisLayoutStrategy()).build());
        }
    });
}

private HorizontalLineAnnotation generateBaseLines(String yAxisId) {
    return sciChartBuilder.newHorizontalLineAnnotation().withStroke(1, ColorUtil.White).withHorizontalGravity(Gravity.FILL_HORIZONTAL).withXAxisId("XAxis").withYAxisId(yAxisId).withY1(0d).build();
}

private NumericAxis generateYAxis(String id, DoubleRange visibleRange) {
    return sciChartBuilder.newNumericAxis().withAxisId(id).withVisibleRange(visibleRange).withAutoRangeMode(AutoRange.Never).withDrawMajorBands(false).withDrawMinorGridLines(true).withDrawMajorGridLines(true).build();
}
private FastLineRenderableSeries generateLineSeries(String yAxisId, IDataSeries ds, PenStyle strokeStyle) {
    FastLineRenderableSeries lineSeries = new FastLineRenderableSeries();
    lineSeries.setDataSeries(ds);
    lineSeries.setPaletteProvider(new DimTracePaletteProvider());
    lineSeries.setStrokeStyle(strokeStyle);
    lineSeries.setXAxisId("XAxis");
    lineSeries.setYAxisId(yAxisId);
    return lineSeries;
}
private IRenderableSeries generateScatterForLastAppendedPoint(String yAxisId, IDataSeries ds) {
    final EllipsePointMarker pm = sciChartBuilder.newPointMarker(new EllipsePointMarker())
            .withSize(4)
            .withFill(ColorUtil.White)
            .withStroke(ColorUtil.White, 1f)
            .build();

    return sciChartBuilder.newScatterSeries()
            .withDataSeries(ds)
            .withYAxisId(yAxisId)
            .withXAxisId("XAxis")
            .withPointMarker(pm)
            .build();
}

private static DoubleRange getMinMaxRange(DoubleValues values) {
    final DoubleRange range = new DoubleRange();
    SciListUtil.instance().minMax(values.getItemsArray(), 0, values.size(), range);
    range.growBy(0.1, 0.1);
    return range;
}

   // Appending to data series with:
    UpdateSuspender.using(MainActivity.chart, new Runnable() {
        @Override
        public void run() {
            MainActivity.pressureDataSeries.append(x, ppA);
            MainActivity.pressureSweepDataSeries.append(x, ppB);

            MainActivity.flowDataSeries.append(x, vFlowA);
            MainActivity.flowSweepDataSeries.append(x, vFlowB);

            MainActivity.volumeDataSeries.append(x, vtfA);
            MainActivity.volumeSweepDataSeries.append(x, vtfB);

            MainActivity.lastPressureSweepDataSeries.append(x, pp);
            MainActivity.lastFlowDataSeries.append(x, vFlow);
            MainActivity.lastVolumeDataSeries.append(x, vtf);
        }
    });

`

0 votes
7k views

Hi,

I am using Scichart 6.1 in WPF application. I want to access ScichartSurface in my view model to call some commands like ZoomExtentsModifier or SuspandUpdate. So I created all controls like surface, Axis, Series and annotations in my code according to your example ‘Creating your First SciChartSurface’.
My question is how can I attach this view model to my view [*.xaml file] ? I couldn’t find any example of xaml file in this case.

Regards

0 votes
7k views

When I create a SCIChartSurface programmatically, following the Quick Start guide:
https://www.scichart.com/documentation/ios/current/creating-your-first-scichart-ios-app.html#adding-scichartsurface-purely-from-code

Functionally everything works as expected, but I see a series of these messages in the log:

   [CAMetalLayer nextDrawable] returning nil because allocation failed.

I do not see these messages when the SCIChartSurface is instantiated via a storyboard.

0 votes
10k views

Hi,

I am developing a real-time application which needs multiple charts in some tab Items. I create a user control contain a ScichartSurface and RenderableSeries for each chart. Then apply this user Control as a list item of a list box in each tab. I inspired from 50-Channel EEG example.

The problem is the performance is too low and my tab items have a considerable delay on changing. So if I use one surface per tab item and use stacked YAxis to show series then does it make any difference?

Any insight would be much appreciate.

  • maryam zoj asked 4 years ago
  • last active 4 years ago
0 votes
8k views

Hi,
I am working on an application that shows real-time data on different charts. I used SciChartSurface for each series.
The problem is when the application starts initialization of charts it takes too much time.
How can I make it fast.
Thanks

  • neda asked 4 years ago
  • last active 4 years ago
0 votes
7k views

We currently have up to 4 charts that are stacked vertically and the data flows horizontally. However, we need to reverse it so that they are stacked horizontally and the data flows vertically. We currently have a grid setup for the charts to be set to but I can’t seem to figure out how to reset the Grid.Row and Grid.Column of each SciChartSurface at runtime.

Example:
Horizontally, this is how it looks…

<s:SciChartSurface x:Name="sciChartSurface1" Grid.Row="0" Grid.Column="1">

Vertically, it needs to be this…

<s:SciChartSurface x:Name="sciChartSurface1" Grid.Row="1" Grid.Column="0">

Is this possible to do at runtime/from the backend code?

0 votes
5k views

Hello,

Let me first describe the issue we have and why I think a possible solution would be to catch the double tap event.

Our chart consists of 6 series. We have an X axis that shows timestamps and 5 Y axis’ for different data like pressure value, temperature, etc. which are of type double. Additionally under the chart we have a legend that displays these 5 Y axis series (one series per one Y axis) with ability to change the visibility of the series and axis.

The problem occurred when as an example, temperature values throughout are constant, e.g. 24.5. The line gets drawn and it is a stable line. Axis is also displayed. However, when a user does the double tap gesture on the chart surface, which usually resets the zoom extents, the axis that has static/non-changing values does some sort of re-initialize animation and after several of double tab gestures only axis label remains (minor and major ticks disappear).

If I could catch the double tap gesture event and override it I could for example say that if the data is static don’t do anything. However, I don’t know where this event is and how to override it.

Any help would be much appreciated.

Thank you.
Regards,
Paul.

  • pauzu asked 5 years ago
  • last active 5 years ago
0 votes
15k views

Hey all,

is there a way on iOS to export a SciChartSurface to a vector format in order to embed the exported chart into a PDF document? Right now the only thing I can find in the Documentation is exportToUIImage(). If not – any ideas for a workaround until such feature is implemented?

0 votes
13k views

Has anyone encountered this before?

XamlParseException: Unexpected record in Baml stream. Trying to add to SciChartSurface which is not a collection or has a TypeConverter.

<DataTemplate x:Key="SciLineChartTemplate"><Grid><s:SciChartSurface ...

1 vote
11k views

I want a transparent background of SCI Chart so that view below the chart are visible. I have tried various solutions but it is still turning out to be black. Below is my code for the same. Can anyone please help me out ? I am setting SCIChartSurface backgroundColor property to achieve it but it doesnt seem to work.

func initColumnChart() {

    let xAxis = SCINumericAxis()
    let yAxis = SCINumericAxis()
    //self.surface.xAxes.add(xAxis)
    //self.surface.yAxes.add(yAxis)
    self.surface.backgroundColor = UIColor.clear
    self.surface.isOpaque = false
    self.surface.renderableSeriesAreaFill = SCISolidBrushStyle(color: UIColor.clear)
    self.surface.renderableSeriesAreaBorder = SCISolidPenStyle(color: UIColor.clear, withThickness: 0)


    let xAxisGridBandBrush = SCISolidBrushStyle(color: UIColor.clear)
    xAxis.style.gridBandBrush = xAxisGridBandBrush

    xAxis.visibleRange = SCIDoubleRange(min: SCIGeneric(-0.6), max: SCIGeneric(8.0))
    xAxis.style.majorTickBrush = SCISolidPenStyle(color: UIColor.white, withThickness: 1)
    xAxis.style.majorTickSize = 5
    xAxis.autoTicks = false
    xAxis.majorDelta = SCIGeneric(1.0)
    xAxis.minorDelta = SCIGeneric(1.0)
    xAxis.labelProvider = UsageXLabelProvider()
    xAxis.style.labelStyle.color = UIColor.white
    xAxis.style.labelStyle.fontName = "Helvetica"
    xAxis.style.labelStyle.fontSize = 14
    xAxis.style.drawLabels = true
    xAxis.style.drawMajorGridLines = false
    xAxis.style.drawMinorGridLines = false
    xAxis.style.drawMajorTicks = true
    xAxis.style.drawMinorTicks = false
    xAxis.tickProvider = YAxisTickProvider(minorTicks: [], majorTicks: [0,1,2,3,4,5,6])



    let yAxisGridBandBrush = SCISolidBrushStyle(color: UIColor.clear)
    yAxis.style.gridBandBrush = yAxisGridBandBrush

    yAxis.style.labelStyle.color = UIColor.white
    yAxis.style.labelStyle.fontName = "Helvetica"
    yAxis.style.labelStyle.fontSize = 14
    yAxis.style.drawLabels = true
    yAxis.visibleRange = SCIDoubleRange(min: SCIGeneric(-1.0), max: SCIGeneric(65))
    yAxis.autoTicks = false
    yAxis.majorDelta = SCIGeneric(1.0)
    yAxis.minorDelta = SCIGeneric(0.2)
    yAxis.style.majorGridLineBrush = SCISolidPenStyle(color: UIColor.white, withThickness: 0.5, andStrokeDash: [5.0,6.0])
    // Style the Minor Gridlines on the YAxis (vertical lines)
    yAxis.style.minorGridLineBrush = SCISolidPenStyle(color: UIColor.white, withThickness: 0.5, andStrokeDash: [5.0, 6.0])
    yAxis.style.drawMajorGridLines = true
    yAxis.style.drawMinorGridLines = true
    yAxis.style.drawMajorTicks = false
    yAxis.style.drawMinorTicks = false
    yAxis.axisAlignment = .left
    //yAxis.labelProvider = DailyFlowrateLabelProvider()
    yAxis.tickProvider = YAxisTickProvider(minorTicks: [0,8,16,24,31,40,48,56], majorTicks: [0,31,62])

    let dataSeries = SCIXyDataSeries(xType: .float, yType: .float)
    dataSeries.appendRangeX([0,1,2,3,4,5,6], y: [52,40,15,48,25,36,20])

    let rSeries = SCIFastColumnRenderableSeries()
    rSeries.dataSeries = dataSeries
    rSeries.paletteProvider = BarsColorPalette()

    SCIUpdateSuspender.usingWithSuspendable(surface) {
        self.surface.xAxes.add(xAxis)
        self.surface.yAxes.add(yAxis)
        self.surface.renderableSeries.add(rSeries)
        //self.surface.chartModifiers = SCIChartModifierCollection(childModifiers: [SCIPinchZoomModifier(), SCIZoomExtentsModifier(), SCIRolloverModifier()])

        //rSeries.addAnimation(SCIWaveRenderableSeriesAnimation(duration: 3, curveAnimation: .easeOut))
    }
}
  • Ayush Jain asked 5 years ago
  • last active 5 years ago
1 vote
6k views

I’m try to generate a UIImage from a SCIChartSurface into a graphic context using the code below from a view that is not displayed on the screen. The image created is pure black, which indicates it did not draw. If I display the graph in a view on the devices screen, the graph draws correctly.

UIGraphicsBeginImageContextWithOptions(self.chart.bounds.size, NO, 0.0);
[self.chart drawViewHierarchyInRect:self.chart.bounds afterScreenUpdates:YES];
UIImage *chartImage = UIGraphicsGetImageFromCurrentImageContext();
UIGraphicsEndImageContext();

Are there any special steps that are needed to draw into a graphic context?

0 votes
15k views

Quick example. All charts visible:

enter image description here

Setting Visibility.GONE to RSI chart:

enter image description here

As you can see part of RSI chart is now visible on MACD chart.

Here is my layout. I want to be able to hide any of the charts inside LinearLayout and the remaining charts should equally fill the newly created space. I wasn’t able to recreate the desired behaviour with ConstraintLayout, otherwise I would use it.

<com.scichart.charting.visuals.SciChartSurface
        android:id="@+id/priceChart"
        android:layout_width="match_parent"
        android:layout_height="0dp"
        android:layout_weight="1" />

    <LinearLayout
        android:layout_width="match_parent"
        android:orientation="vertical"
        android:layout_height="0dp"
        android:layout_weight="1">

        <com.scichart.charting.visuals.SciChartSurface
            android:id="@+id/macdChart"
            android:layout_width="match_parent"
            android:layout_height="0dp"
            android:layout_weight="1"/>

        <com.scichart.charting.visuals.SciChartSurface
            android:id="@+id/rsiChart"
            android:layout_width="match_parent"
            android:layout_height="0dp"
            android:layout_weight="1"/>

        <com.scichart.charting.visuals.SciChartSurface
            android:id="@+id/volumeChart"
            android:layout_width="match_parent"
            android:layout_height="0dp"
            android:layout_weight="1"/>
    </LinearLayout>
  • Primoz asked 6 years ago
  • last active 6 years ago
0 votes
13k views

I want to handle mouse click event on ChartSurface. I need to detect when clicked on chart whether series was clicked or chartsurface was clicked. I handled previewmouseleftbutton on chartsurface but it is not giving clicked element information. Can you pls help?

  • KC asked 6 years ago
  • last active 6 years ago
0 votes
0 answers
11k views

Hello!
I’m writting an app with using SciChart Surface. After little changes in XAML code, that had no effect on surface, those surface show nothing. I turned all made changes back to correct working version but this didn’t help. What can it be? I attach veiw of surface that a see now. (Theme is presetup “Electric”)

0 votes
7k views

Hi ,

I am facing a issue with the tooltips.When the scichart surface width is small or the window that has the scichartsurface is small the tooltips are not coming out of chart surface. I can reproduce the issue in Scichart sample(CustomTooltipsWithModifiers) also.

I even tried setting ClipModifierSurface =”False” ClipToBounds=”False”, but no luck. I still have the issue.

FYI , I am attaching the .png files. I cannot attach the sample project here because the allowed upload size is smaller.

Thanks,
Rakesh Bandari.

0 votes
9k views

I try to add data series and have them rendered on a chart surface. The surface and entire chart library is wrapped in an mvvm-based api. The sci chart control and wrapping library are rendered on a document panel. I add new data series via the viewmodel and here is where I have some unexpected behavior:

a) When being on a different document panel, meaning the chart control is NOT visible, and when I add a new data series via view model and then view the document panel that hosts the sci chart control, no chart series are rendered on the chart but I do see the correct legend data (such as chart series name, color, stroke thickness). Please see below screen shot “Capture1.jpg” .

b) When I make the sci chart control visible by viewing the document panel that hosts the sci chart control and then via a button and command add the very same data series via my chart control’s view model the charts are correctly rendered. Please see “Capture2.jpg”.

My question is why is that the case? I basically expose a method in my chart library view model that lets me add data and if I invoke that methods while being on a document panel that does not host the chart control the added data series is not rendered on the chart. But strangely the correct chart legend data are displayed and also the chart control itself is correctly rendered. No problems when the hosting document panel is active and the very same method is invoked.

Basically what I currently observe is that the data series are not rendered at all as long as the chart control is not “in view” or the hosting document panel is not selected. I am sure programmatically all references and bindings are correct.

I have spend many hours debugging this issue and do not seem to find an answer. Any pointers?

Thanks a lot,
Matt

Edit:

Here is how I bind the content control to the view model of my sci chart charting library (user control)

<ContentControl Grid.Row="1" Content="{Binding ChartControl, Mode=OneWay}" />

…and the view model is instantiated in the hosting view model constructor:

public MainWindowViewModel()
{
   ChartControl = new SciChartControlViewModel();

    ExitApplicationCommand = new RelayCommand(OnExitApplicationCommand);
    LoadDataSeriesFromFilesCommand = new RelayCommand(OnLoadDataSeriesFromFilesCommand);
    RefreshDataSeriesFromFilesCommand = new RelayCommand(OnRefreshDataSeriesFromFilesCommand);


    Test();

}

…Test() performs the following action:

private void Test()
{
    var quotes = new List<Quote>();
    List<DateTime> timeStamps = new List<DateTime>();
    List<double> values = new List<double>();
    List<SciChartAnnotation> annotations = new List<SciChartAnnotation>();
    Random rand = new Random((int)DateTime.Now.Ticks);
    DateTime currentDt = DateTime.Now;
    double currentValue = 0;

    for (int index = 0; index <= 50000; index++)
    {
        var randomValue = rand.NextDouble();
        currentDt = currentDt + TimeSpan.FromSeconds(randomValue);
        currentValue = currentValue + randomValue - 0.5;

        if (index % 1000 == 0)
        {
            var buySell = rand.NextDouble() > 0.5 ? SciChartAnnotationDirection.Buy : SciChartAnnotationDirection.Sell;
            annotations.Add(new SciChartAnnotation(buySell, currentDt, currentValue, "Index:" + index));
        }

        timeStamps.Add(currentDt);
        values.Add(currentValue);

        quotes.Add(new Quote(){DataProviderId = "Provider1", SymbolId = "Symbol1", QuoteType = QuoteType.BidAsk, CompressionType = TimeCompressionType.NoCompression, CompressionUnits = 0, TimeStamp = currentDt, Bid = currentValue, Ask= currentValue + 0.05, });

    }

    ChartControl.AddDataSet("Pane1", "0.00000", quotes, annotations);
    //ChartControl.AddDataSet("MattSeries", ChartType.Scatter, 1, "0.00000", timeStamps, values);

}

…it basically tries to render chart series and annotations.

Strangely, as mentioned before, the series legends render correctly and the annotations also all render correctly but the chart series do not! Could this be a bug?

  • bbmat asked 7 years ago
  • last active 7 years ago
0 votes
15k views

Hi,

I have a question concerning multithreaded access to the DataSeries:

We implemented an overview for our chart as described here. This works fine when we load data, add it to the series and then display it.

Now, for a certain use case we need to display live data. We implemented this in a background thread. We noticed that after some time the application freezes when the update frequency rises. In the documentation I found this:

NOTE: Considerations when a DataSeries is shared across multiple chart surfaces. Currently only a single parent chart is tracked, so DataSeries.SuspendUpdates() where the DataSeries is shared may have unexpected results.

I guess this is what is happening here…so what is the recommended approach to achieve something like this? Do we have to add the data on the UI thread if we want to have the Overview? Here it says:

When appending Data in a background thread, you cannot share a DataSeries between more than one SciChartSurface. You can still share a DataSeries between more than one RenderableSeries.

Does that mean we should create more different RenderableSeries for the main chart surface and the overview surface that are based on the same DataSeries? Any help would be appreciated!

0 votes
9k views

I am looking to implement Print functionality to the charts. I can use the Builtin functionality, but I need the chart to print on a lighter theme. How can I do this ? Can we create an in memory clone, switch its theme and print ?

0 votes
13k views

I have a WPF app where a UserControl is created at startup. The control contains two SciChartSurface objects, both initially invisible. About every 10th time I start the application it hangs on the thread with this call stack:

mscorlib.dll!System.Collections.Generic.ObjectEqualityComparer<System.__Canon>.Equals(System.__Canon x, System.__Canon y)    
mscorlib.dll!System.Collections.Generic.List<System.IComparable>.Contains(System.IComparable item)   
SciChart.Charting.dll!SciChart.Charting.Numerics.TickProviders.TimeSpanTickProviderBase.c5b456a75ec2eca07ab2f0cf38c30f4f2(SciChart.Data.Model.IRange cb7f8a302c4d43c2cfce28a7f59c09882, SciChart.Charting.Model.IAxisDelta<System.TimeSpan> cf1435e1ac3c185934e905ec126bcd3fa)   
SciChart.Charting.dll!SciChart.Charting.Numerics.TickProviders.TimeSpanTickProviderBase.GetMajorTicks(SciChart.Charting.Visuals.Axes.IAxisParams axis)   
SciChart.Charting.dll!SciChart.Charting.Numerics.TickProviders.TickProvider<System.IComparable>.caf851e93289795305ee933ce4bbca448(SciChart.Charting.Visuals.Axes.IAxisParams c050e7b647895decc0313c2786c4fc396)  
SciChart.Charting.dll!SciChart.Charting.Visuals.Axes.AxisCore.CalculateTicks()   
SciChart.Charting.dll!SciChart.Charting.Visuals.Axes.AxisBase.OnDraw(SciChart.Drawing.Common.IRenderContext2D renderContext, SciChart.Charting.Visuals.RenderableSeries.IRenderPassData renderPassData)  
SciChart.Charting.dll!A.c68de5aaca24f8f81d98aed29fac3caff.c6a7d2b5be124728330bbf562594a9bb9(SciChart.Charting.Visuals.ISciChartSurface c17037e8328cd0abc02d2a6957dfa450c, SciChart.Charting.Services.RenderPassInfo c16b8d70d2b6ecad8f9fca7ac3f5177b8, SciChart.Drawing.Common.IRenderContext2D c41db0419b661c8ac05a2aa6a1ea66092)   
SciChart.Charting.dll!A.c68de5aaca24f8f81d98aed29fac3caff.RenderLoop(SciChart.Drawing.Common.IRenderContext2D renderContext)     
SciChart.Charting.dll!SciChart.Charting.Visuals.SciChartSurface.DoDrawingLoop()  
SciChart.Charting.dll!SciChart.Charting.Visuals.SciChartSurface.c86fb714e67e4ff799a0a0b43ef420019()  
SciChart.Charting.dll!SciChart.Charting.Visuals.SciChartSurface.OnRenderSurfaceDraw(object sender, SciChart.Drawing.Common.DrawEventArgs e)  
SciChart.Drawing.dll!SciChart.Drawing.Common.RenderSurfaceBase.OnDraw()  
SciChart.Drawing.dll!SciChart.Drawing.Common.RenderSurfaceBase.OnRenderTimeElapsed()     
SciChart.Drawing.dll!SciChart.Drawing.Common.RenderSurfaceBase.OnRenderSurfaceBaseLoaded(object sender, System.Windows.RoutedEventArgs e)    
PresentationCore.dll!System.Windows.RoutedEventHandlerInfo.InvokeHandler(object target, System.Windows.RoutedEventArgs routedEventArgs)  
PresentationCore.dll!System.Windows.EventRoute.InvokeHandlersImpl(object source, System.Windows.RoutedEventArgs args, bool reRaised)

The CPU spikes and the app never responds. Any thoughts as to why this might happen?

  • Dan Pilat asked 7 years ago
  • last active 7 years ago
1 vote
19k views

Hello,

Out team have several question about the framework:

  1. Is there a way to make SCIChartSurfaceView background transparent so that the user could see underlying views? We tried using background brush of clear color on SCIChartSurface and making SCIChartSurfaceView backgroundColor transparent but no avail.

  2. Is it possible to add translate/rotate/scale animation to markers/annotations from code?

  3. When using gradient brush with mountain renderable series we found a strange visual artifact (“Gradient artifact” image). Is there a way to fix it?

Best regards,
Vasiliy

0 votes
14k views

The complete message is: Unsorted data occurs in the collection. The only allowed SearchMode is Exact when FindIndex() is called on an unsorted collection, but Nearest was passed in.

I started with three renderable series that all had a certain time scale (x axis). I want to add another renderable series but it uses a separate time scale (x axis). I received this error so I put the two lists (x axis and y axis data) into a dictionary and used orderby on the dictionary key (time scale x axis list). I then cleared and appended this data to my DataSeries property. The code is still throwing this exception. What does unsorted mean?

Thanks.

Edit: The data is ordered by the key (timespan) in ascending order before I use orderby.

  • Ryan Woods asked 8 years ago
  • last active 5 years ago
1 vote
11k views

If I have two points on my chart (x1, y1) and (x2, y2), what is the recommended way to create a line that goes through these two points? I maintain the value of the slope and the previously mentioned coordinates.

Thanks!

  • Ryan Woods asked 8 years ago
  • last active 8 years ago
1 vote
16k views

I would like to stop the user from trying to load datas that are so large that when zoomed out it becomes confusing. I thought that we could use the none resampling mode but that means that the chart would load all data points and I think that this could affect performance. No matter the resampling mode, eventually the dataset will be so large that if the user zooms out, the chart will display a confusing image.

What is the best practice for this type of situation? I was thinking that perhaps we should limit the zoom based on data size. Perhaps there is a better idea out there?

Thanks!

  • ryan01 asked 8 years ago
  • last active 8 years ago
1 vote
15k views

I found a post on here regarding this topic but the link to the solution was a dead link.

I want to Autorange without affecting my zoom abilities. If I set AutoRange=”Always”, then I can’t zoom. If I set AutoRange=”Once”, then it does it the first time but I have to double click every time after that. What is the solution to this issue (This is an issue!). Fixing this would not be adding a new feature, it would be removing a problem within the code.

Edit: I think a solution would be to fire an event on DataSeries Changed. Is there an event that corresponds to this? I searched through the dependency properties and couldn’t find anything like that.

Edit: I used the Rendered event and called scichart.ZoomExtents(). I thought this would work, but it doesn’t resize properly either.

Edit: I want to add that I understand the use case for real time data, but I am looking at a snapshot. I can choose different snap shots but they don’t change once chosen. I need to update the range on each choice but then allow me to zoom in between.

Edit: I think that the scichart is being zoomed before the new dataseries is set. I can’t prove it, but that is what my gut tells me.

  • Ryan Woods asked 8 years ago
  • last active 8 years ago
0 votes
10k views

Hi,

I’ve got an issue with ChartModifiers in following scenario. I’ve got bunches of signals, where every signal carry data from different sensor. Bunches are recorded at individual sessions. I need to look at them collectively, so I choose some signals from one bunch and some signals from another bunch, where one signal = one SciChartSurface control and every SciChartSurface control is aligned in sequencer-like way (like yours Multi-Pane Stock Chart example), because I want to see signals one under another. I need to have some group of ChartModifiers acting on all choosen signals, because time scale should be preserved (as in yours example) – it works in my solution. But I also need to apply a modifier to pan, that should works only on signals that are part of certain bunch, because starting point in time of certain bunch signals don’t have to be preserved.

Assuming, zoom should works on every signal from every bunch, but panning should works only on signals from one bunch. I already gain zoom functionality by the means of ModifierGroup and MouseManager.SetMouseEventGroup(), but i don’t know how to add the panning. Could you give me any suggestions, how can I handle this?

I’m sending some screens below.

0 votes
16k views

I deleted my prior question and instead provide code that reproduces the error. I just whipped up two SciChartSurfaces in xaml and bind to properties provided in code behind. Can you please take a look and see whether you also can RubberBandXyZoom but not correctly use ZoomPan? ZoomPan is not synced between the two charts. Its been a very frustrating couple hours….without finding the bug.

public partial class TestControl : UserControl
{
    private ILabelProvider _xAxisFormat;
    private string yAxisFormat;
    private ObservableCollection<IChartSeriesViewModel> _series1;
    private ObservableCollection<IChartSeriesViewModel> _series2;
    private DateRange _sharedXRange;

    public TestControl()
    {
        //SciChartSurface.SetLicenseKey(
        //    @"
        //    <LicenseContract>
        //      ....License Code goes here
        //    </LicenseContract>

        //    ");

        XAxisFormat = new DateTimeLabelProvider();
        YAxisFormat = "0.00";

        Series1 = new ObservableCollection<IChartSeriesViewModel>(new List<IChartSeriesViewModel>() { GenerateSampleLineSeries() });
        Series2 = new ObservableCollection<IChartSeriesViewModel>(new List<IChartSeriesViewModel>() { GenerateSampleLineSeries() });

        //set shared xRange
        SharedXRange = new DateRange((DateTime) Series1.First().DataSeries.XMin, (DateTime) Series1.First().DataSeries.XMax);

        InitializeComponent();
    }

    public ObservableCollection<IChartSeriesViewModel> Series1
    {
        get { return _series1; }
        set
        {
            _series1 = value;
        }
    }

    public ObservableCollection<IChartSeriesViewModel> Series2
    {
        get { return _series2; }
        set
        {
            _series2 = value;
        }
    }

    public DateRange SharedXRange
    {
        get { return _sharedXRange; }
        set
        {
            _sharedXRange = value;
        }
    }

    public ILabelProvider XAxisFormat
    {
        get { return _xAxisFormat; }
        set
        {
            _xAxisFormat = value;
        }
    }

    public string YAxisFormat
    {
        get { return yAxisFormat; }
        set
        {
            yAxisFormat = value;
        }
    }

    private IChartSeriesViewModel GenerateSampleLineSeries()
    {
        var seriesName = "TestLineSeries" + (new Random((int)DateTime.Now.Ticks)).Next();
        List<DateTime> timeStamps = new List<DateTime>();
        List<double> values = new List<double>();
        Random rand = new Random((int)DateTime.Now.Ticks);
        DateTime currentDt = DateTime.Now;
        double currentValue = 0;

        for (int index = 0; index < 1000; index++)
        {
            currentDt = currentDt.AddMinutes(1);
            currentValue = currentValue + (rand.NextDouble() - 0.5);

            timeStamps.Add(currentDt);
            values.Add(currentValue);
        }

        var dataSeries = new XyDataSeries<DateTime, double>();
        dataSeries.SeriesName = seriesName;
        dataSeries.Append(timeStamps, values);


        var renderSeries = new FastLineRenderableSeries() { Name = dataSeries.SeriesName, DataSeries = dataSeries, AntiAliasing = false, StrokeThickness = 2 };

        return new ChartSeriesViewModel(dataSeries, renderSeries);
    }
}


<UserControl x:Class="MattLibrary.ChartLibrary.Views.TestControl"
         xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
         xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
         xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006" 
         xmlns:d="http://schemas.microsoft.com/expression/blend/2008" 
         xmlns:s="http://schemas.abtsoftware.co.uk/scichart"
         mc:Ignorable="d" 
         d:DesignHeight="300" d:DesignWidth="300"
         DataContext="{Binding RelativeSource={RelativeSource Self}}">
<Grid>

    <Grid.RowDefinitions>
        <RowDefinition Height="1*"/>
        <RowDefinition Height="1*"/>
    </Grid.RowDefinitions>

    <s:SciChartSurface Grid.Row="0" SeriesSource="{Binding Series1}">

        <s:SciChartSurface.XAxis>
            <s:DateTimeAxis 
                            Visibility="Visible"
                            LabelProvider="{Binding XAxisFormat}" 
                            VisibleRange="{Binding SharedXRange}"
                            GrowBy="0.01, 0.01"/>
        </s:SciChartSurface.XAxis>

        <s:SciChartSurface.YAxis>
            <s:NumericAxis 
                            Visibility="Visible"
                            AxisAlignment="Right"
                            TextFormatting="{Binding YAxisFormat}" 
                            GrowBy="0.03, 0.03" 
                            AutoRange="Always"/>
        </s:SciChartSurface.YAxis>

        <s:SciChartSurface.ChartModifier>

            <s:ModifierGroup s:MouseManager.MouseEventGroup="SharedMouseGroup">

                <s:ZoomPanModifier IsEnabled="True" ReceiveHandledEvents="True" XyDirection="XDirection" ExecuteOn ="MouseLeftButton"/>
                <s:RubberBandXyZoomModifier IsEnabled="True" ReceiveHandledEvents="True" IsXAxisOnly="True" ExecuteOn="MouseRightButton"/>

            </s:ModifierGroup>
        </s:SciChartSurface.ChartModifier>

    </s:SciChartSurface>



    <s:SciChartSurface Grid.Row="1" SeriesSource="{Binding Series2}">

        <s:SciChartSurface.XAxis>
            <s:DateTimeAxis 
                            Visibility="Visible"
                            LabelProvider="{Binding XAxisFormat}" 
                            VisibleRange="{Binding SharedXRange}"
                            GrowBy="0.01, 0.01"/>
        </s:SciChartSurface.XAxis>

        <s:SciChartSurface.YAxis>
            <s:NumericAxis 
                            Visibility="Visible"
                            AxisAlignment="Right"
                            TextFormatting="{Binding YAxisFormat}" 
                            GrowBy="0.03, 0.03" 
                            AutoRange="Always"/>
        </s:SciChartSurface.YAxis>

        <s:SciChartSurface.ChartModifier>

            <s:ModifierGroup s:MouseManager.MouseEventGroup="SharedMouseGroup">

                <s:ZoomPanModifier IsEnabled="True" ReceiveHandledEvents="True" XyDirection="XDirection" ExecuteOn ="MouseLeftButton"/>
                <s:RubberBandXyZoomModifier IsEnabled="True" ReceiveHandledEvents="True" IsXAxisOnly="True" ExecuteOn="MouseRightButton"/>

            </s:ModifierGroup>
        </s:SciChartSurface.ChartModifier>



    </s:SciChartSurface>

</Grid>

  • bbmat asked 8 years ago
  • last active 8 years ago
0 votes
8k views

Hi,

I have 2 separate charts (SciChartSurface) and my goal is to enable mouse selection of a series on only the chart surface that contains the series. I do not share renderable series and not even data series between different chart surfaces. I am not sure why a series on the second chart surface is selected when I click on an area within the first chart surface. How can I prevent this from happening?

Could it be this is a bug in that SeriesSelectionModifier checks for hitpoints beyond the chart surface on which the mouse hit occurred? I verified and this problem only occurs when sharing Chart Modifiers via MouseManager. Attaching the MouseManager.MouseEventGroup to each individual modifier does not seem to work, it looks like it has to be attached to “ModifierGroup”. So I am still stuck with this problem.

<s:SciChartSurface.ChartModifier>
            <s:ModifierGroup s:MouseManager.MouseEventGroup="MyMouseEventGroup">

                <s:SeriesSelectionModifier ReceiveHandledEvents="True">
                    <s:SeriesSelectionModifier.SelectedSeriesStyle>
                        <Style TargetType="s:BaseRenderableSeries">
                            <Setter Property="StrokeThickness" Value="10"/>
                        </Style>
                    </s:SeriesSelectionModifier.SelectedSeriesStyle>
                </s:SeriesSelectionModifier>

                <s:RubberBandXyZoomModifier ReceiveHandledEvents="True" IsAnimated = "False" IsXAxisOnly = "True" ExecuteOn = "MouseRightButton"/>
                <s:CursorModifier ReceiveHandledEvents="True" SourceMode="AllSeries" ShowAxisLabels="True" />
                <s:ZoomPanModifier ReceiveHandledEvents="True" XyDirection="XYDirection" ClipModeX = "ClipAtExtents" ExecuteOn ="MouseLeftButton"/>
                <s:MouseWheelZoomModifier ReceiveHandledEvents="True" XyDirection = "XDirection"/>
                <s:ZoomExtentsModifier ReceiveHandledEvents="True" IsAnimated = "False" ExecuteOn = "MouseDoubleClick"/>
                <s:LegendModifier ReceiveHandledEvents="True" Name="GeneralLegend" ShowLegend="True" LegendPlacement ="Inside" GetLegendDataFor="AllSeries" Margin="10" LegendItemTemplate="{StaticResource LegendItemTemplate}"/>


            </s:ModifierGroup>
        </s:SciChartSurface.ChartModifier>
  • bbmat asked 8 years ago
  • last active 8 years ago
0 votes
0 answers
16k views

Hello again. We have an application that has many tabs with scichart surface. Our goal is creating a report: screenshots of all scichart surfaces in tabs. But we found out, when scichartsurface was not active, all tick labels didn’t render on screenshots.
Here is our code snippet for creating screenshot:

double actualHeight = source.RenderSize.Height;
            double actualWidth = source.RenderSize.Width;
            double renderHeight = actualHeight * scale;
            double renderWidth = actualWidth * scale;

            RenderTargetBitmap renderTarget = new RenderTargetBitmap((int)renderWidth, (int)renderHeight, 96, 96, PixelFormats.Pbgra32);
            VisualBrush sourceBrush = new VisualBrush(source);
            DrawingVisual drawingVisual = new DrawingVisual();

            using (var drawingContext = drawingVisual.RenderOpen())
            {
                drawingContext.PushTransform(new ScaleTransform(scale, scale));
                drawingContext.DrawRectangle(sourceBrush, null, new Rect(new Point(0, 0), new Point(actualWidth, actualHeight)));
            }
            renderTarget.Render(drawingVisual);
            JpegBitmapEncoder jpgEncoder = new JpegBitmapEncoder();
            jpgEncoder.QualityLevel = quality;
            jpgEncoder.Frames.Add(BitmapFrame.Create(renderTarget));

            Byte[] _imageArray;
            using (MemoryStream outputStream = new MemoryStream())
            {
                jpgEncoder.Save(outputStream);
                _imageArray = outputStream.ToArray();
            }
            return _imageArray;

How can we fix it?

Thanks in advance

  • Egor asked 8 years ago
0 votes
12k views

Hi,

I have a number of charts in a dialog.
I would like to indicate which one is selected by the user, by e.g. adding a border around it.
So I thought the correct way was to use an Adorner.
But the SciChartSurface only has an AdornerLayerCanvas. It seems to be a bit different than the ususal Adoner pattern, but can it be used for this purpose, or is there a better way?
I cannot find any example either here or on google, but if you know of some, please let me know.

Thanks!

0 votes
0 answers
16k views

Hi,

I wonder, if it’s possible to force the SciChartSurface control to resize itself depending on a size of the actual data area, given that axis are in the auto-range mode. For example, when the Y range is large than X range, the entire control resizes into the portrait orientation, thus keeping square pixels in the data area.

Thank you in advance!
Ilia

  • corvex asked 9 years ago
  • last active 9 years ago
0 votes
0 answers
9k views

I use a similar multi-pane setup as your multi-pane stock chart demo and specify the ChartModifier within SciChartSurface.ChartModifier as follows:

<s:SciChartSurface.ChartModifier>
                        <s:ModifierGroup s:MouseEventGroup="SharedMouseGroup">
                            <s:RubberBandXyZoomModifier IsAnimated = "False" IsXAxisOnly = "True" ExecuteOn = "MouseRightButton"/>
                            <s:ZoomPanModifier XyDirection="XYDirection" ClipModeX = "ClipAtExtents" ExecuteOn ="MouseLeftButton" />
                            <s:MouseWheelZoomModifier XyDirection = "XYDirection"/>
                            <s:ZoomExtentsModifier IsAnimated = "False" ExecuteOn = "MouseDoubleClick" />
                            <s:CursorModifier SourceMode="AllSeries"  UseInterpolation="True" ShowAxisLabels="True"/>
                            <s:LegendModifier Name="GeneralLegend" ShowLegend="True" LegendPlacement ="Inside" GetLegendDataFor="AllSeries" Margin="10" LegendItemTemplate="{StaticResource LegendItemTemplate}"/>

                            <s:SeriesSelectionModifier ReceiveHandledEvents="True">
                                <s:SeriesSelectionModifier.SelectedSeriesStyle>
                                    <Style TargetType="s:BaseRenderableSeries">
                                        <Setter Property="StrokeThickness" Value="10"/>
                                    </Style>
                                </s:SeriesSelectionModifier.SelectedSeriesStyle>
                            </s:SeriesSelectionModifier>

                        </s:ModifierGroup>
                    </s:SciChartSurface.ChartModifier>

The problem I have is that the vertical chart modifier (a vertical line as part of the crosshair that vertically tracks the mouse cursor) is only visible within the respective pane where the mouse cursor is currently located at. When I move the mouse cursor onto another pane then the vertical line of the cross hair tracks in this different pane but only within this specific pane. I want the vertical line to be visible across all panes just like in your multi-pane stock chart demo. When I pan or zoom any of the panes then all panes are responding accordingly and in synchronized fashion, so I am sure the panes’ xaxis are all correctly linked to the primary xAxis.

What am I doing wrong?

Thanks

  • bbmat asked 9 years ago
  • last active 9 years ago
1 vote
11k views

I cannot figure out how to setup SciChartSurface so that it would be initialized right away and IsSizeValidForDrawing returned true.

Now I have the special case for the first call to the view with SciChartSurface and I start working with it after receiving SizeChanged event. In this event handler and afterwards IsSizeValidForDrawing gets true and later on all my requests to the view are OK. It’s quite inconvenient.

When does SciChartSurface get resized? What makes it resize?
Which moment does IsSizeValidForDrawing get true?
What should I do to make the size valid after instantiating or receiving first bunch of data ?
How can I make it progmammatically?

This is my xaml:

        <s:SciChartSurface.RenderableSeries>
            <s:FastLineRenderableSeries XAxisId="XAxis1" YAxisId="YAxis1" AntiAliasing="False" />
            <s:FastLineRenderableSeries XAxisId="XAxis2" YAxisId="YAxis2" AntiAliasing="False"  />
            <s:FastLineRenderableSeries XAxisId="XAxis1" YAxisId="YAxis1" AntiAliasing="False" />
            <s:FastLineRenderableSeries XAxisId="XAxis2" YAxisId="YAxis2" AntiAliasing="False" />
            <s:FastLineRenderableSeries XAxisId="XAxis1" YAxisId="YAxis1" AntiAliasing="False"/>
            <s:FastLineRenderableSeries XAxisId="XAxis2" YAxisId="YAxis2" AntiAliasing="False"/>
        </s:SciChartSurface.RenderableSeries>

        <s:SciChartSurface.XAxes>
            <s:NumericAxis Id="XAxis1" />
            <s:NumericAxis Id="XAxis2" />
        </s:SciChartSurface.XAxes>

        <s:SciChartSurface.YAxes>
            <s:NumericAxis Id="YAxis1"  />
            <s:NumericAxis Id="YAxis2" />
        </s:SciChartSurface.YAxes>
    </s:SciChartSurface>

    <Grid Grid.Row="1" x:Name="myOverviews">
        <Grid.RowDefinitions>
            <RowDefinition Height="*" />
            <RowDefinition Height="*" />
        </Grid.RowDefinitions>

        <s:SciChartOverview  Grid.Row="0" 
                    XAxisId="XAxis1"
                    ParentSurface="{Binding ElementName=mySurface}"
                    DataSeries="{Binding ElementName=mySurface, Path=RenderableSeries[4].DataSeries}"
                    SelectedRange="{Binding ElementName=mySurface, Path=XAxes[0].VisibleRange, Mode=TwoWay}"
                    Visibility ="Collapsed"
                    s:ThemeManager.Theme="BlackSteel">
        </s:SciChartOverview>

        <s:SciChartOverview Grid.Row="1" 
                    XAxisId="XAxis2"
                    ParentSurface="{Binding ElementName=mySurface}"
                    DataSeries="{Binding ElementName=mySurface, Path=RenderableSeries[4].DataSeries}"
                    SelectedRange="{Binding ElementName=mySurface, Path=XAxes[1].VisibleRange, Mode=TwoWay}"
                    Visibility ="Collapsed"
                    s:ThemeManager.Theme="BlackSteel">
        </s:SciChartOverview>
    </Grid>

All visibilities besides SciChartSurface are “Collapsed”

SciChart version 3.1.0.5077

Thank you

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