Category: WPF

If YAxis AxisAlignment is set to AxisAlignment.Left, then functions
XAxis.GetDataValue and XAxis.GetCoordinate give incorrect values (shifted by YAxis width).

Need to add/subtract YAxis width to get correct values, like that:

this.chart.XAxis.GetCoordinate(verticalLine.X1) + this.chart.YAxis.ActualWidth

this.chart.XAxis.GetDataValue(e.MousePoint.X - this.chart.YAxis.ActualWidth)

Hi SciChart support,

we experience problems with clipping x axis values, depending on x-axis value range.
assume we have xaxis range from 1000000 to 1000001 and a diagram with a margin of lets say 10 pixels to the right of the container control. Depending on the zoom, the label of the mostright xaxis value(e.g. “1000001”) may be clipped just because the string is just too long. Would you recommend to change the margin dynamically to avoid the clipping or is there a way to prevent the chart from putting the rightmost xaxis value label if it exceeds the diagram bounds?

Hope you could help me.

Thanks in advance, Andreas

CategorizedDateTimeAxis is not suitable for financial intraday charts of instruments with low liquidity and pre/afterhours charts. It discards time periods (minutes) with no trades, ‘compresses time’ and makes picture confusing. They don’t do it in good trading platforms.
DateTimeAxis would help here. But is there any hack to remove time periods when market closed, weekend, holidays?
If not please consider it as new feature request. It can be implemented as a collection of time periods to remove or show.

Hi,

I am using CategoryDateTimeAxis for creation so my VisibleRange is an IndexRange. When I am loading my whole data over chart, I want to set VisibleRange for 3 month by default. So how can I get Min and Max value from VisibleRange as DateTimes?

I don’t see any method which would convert our DateRange to IndexRange and vice verse, so that I can set up my VisibleRange.

Please help!

Hi there, How can i use ZoomExtents() on MVVM ?

I have an impulse series chart, and with SciChart v3.x the rollover modifier line would “snap” to the nearest point. Since migrating to v6.5 this no longer happens – only the rollover marker snaps, not the vertical line. Setting UseInterpolation=”False” has no effect.

I’ve only noticed this on the impulse series, and the rollover line does still snap on other types (e.g. line, scatter). I just wanted to check that I’m not missing something, or if there any way to reinstate this snapping behaviour?

Hi,

Please see the 2 images attached. I would like to reproduce something similar to what’s on the images using scichart ie. being able to select/unselect certain parts of the series by placing a control on certain datapoints (being able to add a checkbox to the surface would be great). What options do I have?

One more question, Is it possible to add a label to LineAnnotations?

Thanks.

Hi team,

How to access, enable and disable scrollbar in c# wpf?

My declaration is as of below.

            <sc:SciChartScrollbar Axis="{Binding ElementName=SciChart, Path=XAxis}" Height="18" Width="150" />

Thanks in advance.

Hey,

I have followed the 50 EEG example in creating a group of graphs which is populated using a listbox and a data template. The graphs are created and populated correctly. The issue arises when creating graph modifiers (eg Rollover, Zoom). Is there an issue with selecting these graphs or adding modifiers.

Thank You

Hi All,

I have a linear graph which represents a measure in real time (I have a loop that gets a value at each iteration). I have a FastLineRenderableSeries with a DataSeries in which I append x and y vector. The y vector is full of Double.NaN values, and it is updated with valid values at each loop iteration. During the representation, I can only see valid values, and NaN values are not represented. Everything ok.

But now I have changed from FastLineRenderableSeries to CustomRenderableSeries (due to markers and other issues), and I have a strange effect on real time visualization (see attached picture). It seems that NaN values are represented as infinite, so I can see a vertical line at last real value.

I have set DrawNaNAs = LineDrawMode.Gaps but it doesn’t work. Am I doing something wrong? Is there something extra I have to set regarding CustomRenderableSeries?

Thanks in advance

Hi every one,
In order to pan and zoom the graph (from the example https://www.scichart.com/wpf-chart-example-pan-on-mouse-drag/ ), I used MouseWheelZoomModifier for zooming and ZoomPanModifier for panning.
The code is as below:

                <s:ZoomPanModifier x:Name="zoomPanModifier"
                                   ClipModeX="ClipAtExtents"
                                   ExecuteOn="MouseLeftButton"
                                   IsEnabled="True" />
            </s:ModifierGroup>

However, when I zoom out the graph and pan it horizontally, the graph auto stretch (auto zooming). That is not what I expected, I want disable this feature but I have no idea how to do it.

Hi guys!
Is there a way to Format all number shown in a Chart to have always 3 Decimal places shown?

Hallo,

I have a problem with drawing of 2d data in a map. The metadata for the respective points change when you zoom in or move the map.

LandmarkCollection landMarks = new LandmarkCollection();
            NAVLandmarkCollection landmarkCollection = NAVLandmarkCollection.Deserialize(@"C:\Users\Serva_admin\Documents\AGV-Viso\VS_Projekte\AGV-Viso-2\AGV-Viso-2\16-02-06-18-23-ING.lmf");
            for (int i = 0; i < landmarkCollection.Count; i++)
            {
                NAVLandmark lm = landmarkCollection.get(i);
                landMarks.Landmarks.Append(lm.X, lm.Y, new Serva.Base.Navigation.Client.NavigationPlugin.MetaData.LandmarkName("G-" + i, lm.X, lm.Y));
            }

            communicationBus.Publish(landMarks);

This function is called once and the data does not change anymore.

I uploaded the pictures of my problem in the attachment.
You can see the Name of the Point in the top-left corner changed.

I hope you can me help.

From example “SciTrader” I created stockcharting which allows to see multiple charts. From main menu I’m creating new windows with content of userControl from example, binds them to ViewModel class and put ViewModel instances into collection of ViewModels. It works fine with historic and realtime date for different stocks. But I have a problem when I’m adding crosshair cursor in my charts. If I have a mouse with crosshair in one chart in all others chart I have vertical line of this crosshair in the same X axis point. And If I scroll chart with left mouse pressed others chart affected too.
I suggest the problem is in this piece of code:

<sciChart:SciChartSurface.ChartModifier>
<sciChart:ModifierGroup sciChart:MouseManager.MouseEventGroup="MySharedMouseGroup">
<sciChart:XAxisDragModifier />
<sciChart:YAxisDragModifier />
<sciChart:ZoomPanModifier IsEnabled="True" />
<sciChart:CursorModifier IsEnabled="True"/>
<!–<sciChart:RubberBandXyZoomModifier IsEnabled="{Binding ChartModifier, Mode=TwoWay, Converter={StaticResource IsModifierTypeConverter}, ConverterParameter=RubberBandZoom}" IsXAxisOnly="True" />–>
<sciChart:MouseWheelZoomModifier />
<sciChart:ZoomExtentsModifier ExecuteOn="MouseDoubleClick" />
</sciChart:ModifierGroup>
</sciChart:SciChartSurface.ChartModifier>

Please give me some hints how can I have independent crosshair appearing only in window where my mouse is.

It worked fine with stockchart controls from CreateRealTimeTickingStockChart but I want to use SciChartSurface from SciTrader example because of volume pane and more powerfull customizing ability of SciChartSurface.

I’m working on a project that updates about 100,000 pointers in real time, but it takes too much time to change the individual colors of the pointers.
Is there any quick way to change pointer individual color?

I am binding my chart to an ObservableCollection that consists of many XYDataSeries. When I create and add the XyDataSeries, I set the SeriesName and Stroke properties. The data shows on the chart. I have the following Legend Template:

    <DataTemplate x:Key="LegendItemTemplate" DataType="s:SeriesInfo">
        <Grid>
            <Grid.ColumnDefinitions>
                <ColumnDefinition Width="Auto" />
                <ColumnDefinition Width="*" />
                <ColumnDefinition Width="Auto" />
            </Grid.ColumnDefinitions>

            <CheckBox Grid.Column="0" 
                      Margin="5,0"
                      HorizontalAlignment="Left"
                      VerticalAlignment="Center"        
                      Foreground="{StaticResource BlackBrush}"
                      Content="{Binding SeriesName}"
                      IsChecked="{Binding RenderableSeries.IsVisible, Mode=TwoWay, UpdateSourceTrigger=PropertyChanged}"
                      Visibility="{Binding LegendData.ShowVisibilityCheckboxes, RelativeSource={RelativeSource AncestorType=s:SciChartLegend}, Converter={StaticResource VisibleWhenTrueConverter}}" />


            <xctk:ColorPicker Grid.Column="2"  x:Name="cpPalette" 
                              ColorMode="ColorPalette" VerticalAlignment="Center"
                              SelectedColor="{Binding RenderableSeries.Stroke, Mode=TwoWay, UpdateSourceTrigger=PropertyChanged}" Height="25" Width="40" />

        </Grid>
    </DataTemplate>

However, when I change the colour using the Colorpicker, my charts series are not updated (ie, changing colour)

I successfully set my x-axis visible range between 0.0 and 5.0. I would like to have major grid lines every 1.0. How can I do this? I see a MajorDelta property which I set to 1.0. This did not work. Instead, the major grid lines are every 0.5 on the x axis.

Dear all,

I was wondering what is the chart recommand use for optimal performance on the following scenario :

• What is the max number of point a chart can accept in a sceries of data ( my customer have nearly 10000 points to be display)
• what is the max number of chart instance that can be visible at same time ? ( for instance user would like to see more that one chart on one screen

Thanks for those information

regards

Kind regards, I need to build an application in C # for an Intel RealSense D415, I must capture the image of a person’s back to be able to view it in 3D, SciChart WPF SDK can be the solution to help me make this application? Thanks for the reply

I saw an obj file appear on the chart through SceneObject But I want to use custom polygon as a point marker for my ScatterRenderableSeries. Can you apply obj file to PointMarker3D? Or How do I add 3d polygon to chart via obj file in viewmodel?

Hello,

I want to implement a custom deltaX cursor in my software. It consists in two vertical lines that can be moved be the user and the idea to get the delta x (DateTime) between the two lines.
I’ve started to implement it by using two custom VerticalLineAnnotation added to a VerticalSliceManager. As my chart is a real time chart, I don’t want my cursors postions changed exepct on user interaction, that’s why I set to Relative the CoordinateMode property of my two Annotations.
The display and the interaction works fine, but when I try to retrieve the actual position of one cursor to compute the delta I have some trouble to convert the relative position to a DateTime value.
I have override the OnDragDelta() method, the relative value of X1 is correct but when I try to convert it into a DateTime by using FromRelativeCoordinate, I still have Date in 1899. I also try to interpret this as OA Date but I still have wrong date.

Do you have an idea ?
Thanks

 public override void OnDragDelta()
    {
        if (_sciChartSurface.XAxis != null)
        {
            double dataValue = (double)this.FromRelativeCoordinate((double)this.X1, _sciChartSurface.XAxis);
            DateTime classic = new DateTime((long)dataValue);
            DateTime fromOa = DateTime.FromOADate(dataValue);
            Debug.WriteLine("CLASSIC "+ classic);
            Debug.WriteLine("OA "+ fromOa);
        }
    }

Hi,
I have a multichart MVVM Light based application with each chart having its own view model. In particulat I have an XYScatter chart with multiple series, each coloured differently. I need to select a point in one of the series with the left mouse button such that all that series points change and the index of the selected series is available in my view model. Simultaneously I need to have the groupRubberBandZoomModifier, groupXAxisDragModifier & groupYAxisDragModifier enabled.

I’ve found a couple of ways of doing this, overriding a modifier or EventToCommand directly on the mouse events and re-drawing the appropriate series, but I either don’t get the interrupt or the groupRubberBandZoomModifier doesn’t work and I can’t figure out what is happening.

Please could you elaborate on how the interrupts are handled in this situation.

Many Thanks
Dai

Hi,
Is it possible to assign different y-axis ids on points of a single data series?

Hello,

I’m working on an analysis software that uses Scichart API for generating graphics in WPF.

I recently used Scichart IOS / Android apps and I really liked the graphics animations.

However, I did not find the way to do the same thing in WPF.

Is it possible to animate the loading of graphics or any other animation?

Thank you.

Hi,

I see one can set an optional PointMarker in FastErrorBarsRenderableSeries. I thought doing so would cause the markers to be drawn at the data points. But this isn’t happening. And in the ErrorBars demo code, you define a separate XyScatterRenderableSeries to draw the data points.

What’s the preferred way? Obviously I can use both an XyScatterRenderableSeries and a FastErrorBarsRenderableSeries, but I’d rather just have one if it can draw both.

Thanks,
–George

Hello. On my 3D chart, I set VisibleRange for the X and Z axes. My DataSeries contains more points than just those within the VisibleRange, but I don’t expect to see points outside VisibleRange (see the example image below).

Update:

To reproduce this effect I added this line to the CreateAScatter3DChart constructor in the SimpleScatterChart3D example:

SciChart.XAxis.VisibleRange = new DoubleRange(0, 5);

All the points in the data series appear, even those outside VisibleRange. How do I get the chart to clip the points so that only the points within VisibleRange are visible?

XAxis Labels

I want to have a label on the x axis for each custom annotations. Is this possible. if so how do i do that.

Thanks

Hi,

Can someone let me know if Scichart is fast when it comes to rendering say 1000’s/10000’s line series on a single chart. I know its very fast for a series with lots of points, however I would be creating lots of series with < 500 points each up to 10k series on a chart. I could possibly limit it to 1000 series by sampling the data. This would be fastline series.

Hello,

I’m using v3.2 SciChart and cannot figure with this problem:

    <SciChart:SciChartSurface x:Name="sciChart">
        <!--  Create X Axis  -->
        <SciChart:SciChartSurface.XAxis>
            <SciChart:NumericAxis   AxisTitle="{Binding XAxisLabel}"   VisibleRange="-20, 50"/>
        </SciChart:SciChartSurface.XAxis>
        [...]
    <SciChart:SciChartSurface/>

It seems that negative values are not displayed correctly, it’s showing these data:
-2 -1 0 10 20 30 40 50

If I set textFormatting to “#.0”, it shows
-20, -10, ,0 10,0 20,0 30,0 40,0 50,0

It’s like negative sign is considerate as a digit.

Hello, guys and gals. So I’m attempting to provide two pieces of information with a single plotted series. In this scenario it is important that we display the Signal-to-Noise ratio of our data along with the data itself. Now, this can create quite a cluttered chart. So the hopeful alternative is to vary the color in some way as the SNR varies. So the overall question is this: Can a single series have a localized variation in color?

Hello,

I am dynamically creating axes/series in my ViewModel, and binding to them in my view. I have this working for the most part, except for this issue:
I can’t find a way to access the chart’s ZoomExtentsCommand. I’ve tried binding to it using TwoWay and OneWayToSource modes, but since I presume there is no change to this command to trigger the binding, it is not being set in my ViewModel. Alternatively, is there a way to set a chart to automatically ZoomExtents when a series has new data appended?

Any assistance with it would be greatly appreciated. Let me know if you need any more information. Here is my chart code:
<s:SciChartSurface x:Name="_plot" s:ThemeManager.Theme="ExpressionLight"
YAxes="{Binding YAxisCollection}"
RenderableSeries="{Binding Series}"
SeriesSource="{Binding XySeries}">
<s:SciChartSurface.XAxis>
<s:DateTimeAxis AutoRange="Once" DrawMinorGridLines="False" DrawMinorTicks="False" TextFormatting="yyyy-MM-dd HH:mm:ss"
AxisTitle="Time"/>
</s:SciChartSurface.XAxis>
</s:SciChartSurface>
And the stack trace for the NullReferenceException:
at Abt.Controls.SciChart.ChartModifiers.ApiElementBase.OnYAxesDrasticallyChanged(Object sender, EventArgs e)
at Abt.Controls.SciChart.ChartModifiers.ApiElementBase.SubscribeAxesCollectionChangedNotification()
at Abt.Controls.SciChart.ChartModifiers.ChartModifierBase.set_ParentSurface(ISciChartSurface value)
at Abt.Controls.SciChart.Visuals.SciChartSurface.c17a2aebd4e4e950c58f08eecb7345e25(IChartModifier cb3ae4876489792efaa30435741196ca4)
at Abt.Controls.SciChart.Visuals.SciChartSurface.OnChartModifierChanged(DependencyObject d, DependencyPropertyChangedEventArgs e)
at System.Windows.DependencyObject.OnPropertyChanged(DependencyPropertyChangedEventArgs e)
at System.Windows.FrameworkElement.OnPropertyChanged(DependencyPropertyChangedEventArgs e)
at System.Windows.DependencyObject.NotifyPropertyChange(DependencyPropertyChangedEventArgs args)
at System.Windows.DependencyObject.UpdateEffectiveValue(EntryIndex entryIndex, DependencyProperty dp, PropertyMetadata metadata, EffectiveValueEntry oldEntry, EffectiveValueEntry& newEntry, Boolean coerceWithDeferredReference, Boolean coerceWithCurrentValue, OperationType operationType)
at System.Windows.DependencyObject.SetValueCommon(DependencyProperty dp, Object value, PropertyMetadata metadata, Boolean coerceWithDeferredReference, Boolean coerceWithCurrentValue, OperationType operationType, Boolean isInternal)
at System.Windows.DependencyObject.SetValue(DependencyProperty dp, Object value)
at System.Windows.Baml2006.WpfMemberInvoker.SetValue(Object instance, Object value)
at MS.Internal.Xaml.Runtime.ClrObjectRuntime.SetValue(XamlMember member, Object obj, Object value)
at MS.Internal.Xaml.Runtime.ClrObjectRuntime.SetValue(Object inst, XamlMember property, Object value)
at MS.Internal.Xaml.Runtime.PartialTrustTolerantRuntime.SetValue(Object obj, XamlMember property, Object value)
at System.Xaml.XamlObjectWriter.Logic_ApplyPropertyValue(ObjectWriterContext ctx, XamlMember prop, Object value, Boolean onParent)
at System.Xaml.XamlObjectWriter.Logic_DoAssignmentToParentProperty(ObjectWriterContext ctx)
at System.Xaml.XamlObjectWriter.Logic_CheckAssignmentToParentStart(ObjectWriterContext ctx)
at System.Xaml.XamlObjectWriter.Logic_CreateAndAssignToParentStart(ObjectWriterContext ctx)
at System.Xaml.XamlObjectWriter.WriteStartMember(XamlMember property)
at System.Xaml.XamlWriter.WriteNode(XamlReader reader)
at System.Windows.Markup.WpfXamlLoader.TransformNodes(XamlReader xamlReader, XamlObjectWriter xamlWriter, Boolean onlyLoadOneNode, Boolean skipJournaledProperties, Boolean shouldPassLineNumberInfo, IXamlLineInfo xamlLineInfo, IXamlLineInfoConsumer xamlLineInfoConsumer, XamlContextStack`1 stack, IStyleConnector styleConnector)
at System.Windows.Markup.WpfXamlLoader.Load(XamlReader xamlReader, IXamlObjectWriterFactory writerFactory, Boolean skipJournaledProperties, Object rootObject, XamlObjectWriterSettings settings, Uri baseUri)
at System.Windows.Markup.WpfXamlLoader.LoadBaml(XamlReader xamlReader, Boolean skipJournaledProperties, Object rootObject, XamlAccessLevel accessLevel, Uri baseUri)
at System.Windows.Markup.XamlReader.LoadBaml(Stream stream, ParserContext parserContext, Object parent, Boolean closeStream)
at System.Windows.Application.LoadComponent(Object component, Uri resourceLocator)
at [MyControl].InitializeComponent()
 

Hi

From the post that I have been reading it shall be possible to use virtualized dataplots, where data is fetched on demand. I also undertand that you have plans to integrate this functionality tighter with your API.

My questions:
* do you have an example of a virutalized dataplot?
* if, and then when will you have more tightly integrated support for virtualzied dataseries?

Hi folks,

What’s the recommended practice for returning values from hit testing back to my viewmodel? I’m calling HitTest() from a mouse click handler in my view codebehind, but I’d like to deal with the results in the viewmodel.

Thanks,
–George

I have a chart that has real-time data being added to it and I want to ensure the chart sizes up to show everything. This chart also displays series that have already been added and I would like to zoom in/out on those. How would I handle both of these at the same time?

Hi,
Is it possible to show contour of bars in ColumnRenderableSeries3D?
Is there way to do this?

ColumnRenderableSeries3D has a Stroke property, but does not appear to have any effect on setting this property.

best regards
Silvester

I’m not clear how you set up FIFO with the SciStockChart class and mvvm; docs are a little weak; all the examples seem to use datasets rather than ChartSeriesViewModel. Do I simply set the fifocapacity? Do I need to set it at instantiation? Do all the ChartSeriesViewModels in a collection need to have the same Fifocapacity? Can I change the fifocapacity at runtime; and if so how would I change the capacity of all of the ChartSeriesViewModels (assuming they must all be the same) in a collection?

thanks in advance.

I want to create a chart like the attached image file.
I want to mark points with different colors depending on the number of data corresponding to the x and y axes.
As a result of searching, there is a HeatmapColorPalette. Is it good to use this?
If there is a more suitable chart, please introduce it.
thank you