Category: WPF

Hi,

I created a chart legend based on the online example. I have three data series: an XyScatterRenderableSeries, a FastColumnRenderableSeries, and a FastLineRenderableSeries. The plot itself is fine. But the legend isn’t. In addition to the checkboxes bug (I don’t need these and so have set ShowVisibilityCheckboxes=False, to no effect), I’m seeing color samples for the scatter and column data, but nothing for the line. All three series names appear as expected, but I’m missing the color sample for the line plot. What’s up?

Thanks,
–George

take the SciChart Trader as an example, x-Axis is type of CategoryDateTimeAxis. I want a way to show the index of the time in the collection, when mouse moves over the price bar in some mode like Rollover or Cursor.

regards
chunxi

Hi,

I’m having an exception thrown when I try to dynamically add an annotation. I’m using the example on your site as reference.I’m sure its something I’m overlooking. But I can’t figure out what it is. I have attached my code here, can you tell me what I’m doing wrong here. I’m trying to add a Line annotation when the user clicks on the context menu.

Thanks,
Deepak

Hello,

I do not seem to be able to have a scrolling Date/Time axis show seconds (or anything except hh:mm) regardless of what values I use for TextFormatting and SubDayTextFormatting.

Everything else works/displays as expected

My X axis XAML looks like:

<SciChart:SciChartSurface.XAxis>
<SciChart:CategoryDateTimeAxis TextFormatting=”MM/dd/yy” GrowBy=”0.1,0.1″ SubDayTextFormatting=”hh:mm:ss” AutoRange=”True” />
</SciChart:SciChartSurface.XAxis>

Many Thanks for your help

Mark

.NET 4.5, Win 7 SP1, VS2012

Hi All,
Can we give Black Border to Candles in Candle Stick chart.

Hi Support Team,

I am a SL developer and i am trying to save the scichart surface as a png file.

I have seen you example “First download the source code, you can find i.e. here: ScreenshotsXpsAndXLabels.zip”

but unfortunally it only works in Wpf , any suggestions would be appreciated.

Cheers

Giuseppe

Have you found a solution for the black flickering problem that occurs when you resize the form? The few solutions I’ve found online do not work. Good old Microsoft.

I may end up moving my app to WPF so I would assume this problem will just go away.

Now I am trying to add MVVM bindings for a Chart Legend

I have

        <SciChart:SciChartSurface x:Name="sciChart" DataSet="{Binding DataSeriesSet}" 
            SciChart:ThemeManager.Theme="Oscilloscope" 
            Grid.Row="1" 
            RenderableSeries="{Binding RenderableSeries}"
            ChartModifier="{Binding ChartModifier}"
            XAxis="{Binding XAxis}" 
            YAxes="{Binding YAxes}">
                   </SciChart:SciChartSurface>
        <SciChart:SciChartLegend x:Name="legendControl" Grid.Row="1" Margin="23,23" ShowVisibilityCheckboxes="True" LegendData="{ Binding LegendDataSource,  Mode=OneWay}"/>

and in My ViewModel

        public AnalogueChartViewModel()
        {
            XAxis = new DateTimeAxis
            {
                VisibleRange = RangeFactory.NewRange(DateTime.Now.AddDays(-2), DateTime.Now),
                DrawMinorGridLines = false,
                AxisTitle = "X-Axis"
            };
            RenderableSeries = new ObservableCollection<IRenderableSeries>();
            YAxes = new AxisCollection();
            DataSeriesSet = new DataSeriesSet<DateTime, double>();
            var xAxisDrag = new XAxisDragModifier();
            var zoomExtents = new ZoomExtentsModifier();
            var rubberBandZoom = new RubberBandXyZoomModifier();
            var panModifier = new ZoomPanModifier { ExecuteOn = ExecuteOn.MouseRightButton };
            _legendDataSource = new LegendModifier { GetLegendDataFor = 0 };

            ChartModifier = new ModifierGroup(xAxisDrag, zoomExtents, rubberBandZoom, panModifier, _legendDataSource);

        }

        private LegendModifier _legendDataSource;

        public LegendModifier LegendDataSource
        {
            get { return _legendDataSource; }
            set 
            { 
                _legendDataSource = value;
                OnPropertyChanged("LegendDataSource");
            }
        }

But not sure how to bind to the LegendData

Sorry I keep troubling you, but after all this there should be some good MVVM code for others to follow too.

I have attached a picture showing what a depth track looks like (circled in red). The depth track takes the place of an X axis. In the picture the depth track is between a geology track above, and a normal log track below. Usually one depth track serves as the x axis for multiple plots, which are referred to as tracks.

I think that SciChart elements can be modified to produce this, but I am not sure where to start. Should I consider the depth track as just a plot with no curves and with the tick marks and x axis on the inside, or should I start with an independent x axis enclosed in a box?

Hello,

I have a problem: I’m creating FastLineRenderableSeries with big StrokeThickness value. The bigger this value is the slower my program works.

Is there any way to speed it up in this situation?

P.S. I’ve attached project below.

Thanks in advance.

Someone recently asked the question on priority support tickets

Q: How do I have two YAxis on the left and right of the chart but with
the same VisibleRange?

e.g. how to mirror the YAxis on both sides of the chart

We are replicating the answer below for benefit of our userbase:

Hi,

I’m trying to set the Visible Range of a CategoryDateTime Axis and its throwing an “Object must be of type DateTime” exception. Can you tell me whats wrong here

var scs = new SciChartSurface();
scs.XAxis = new CategoryDateTimeAxis() { DrawMajorGridLines = false, DrawMinorGridLines = false,AutoRange=AutoRange.Never };
scs.YAxis = new NumericAxis() { Id = "Y1", DrawMajorGridLines = false, DrawMinorGridLines = false };
scs.Style = (System.Windows.Style)this.chartForm.sciChartControl.Resources["SciChartSurfaceStyle"];
DateTime startDate = new DateTime(2003, 9, 1);
DateTime endDate = new DateTime(2004, 1, 31);
scs.XAxis.VisibleRange = new DateRange(startDate, endDate);

The exception gets thrown on the last line. I also tried populating the series before I called the visible range, but it has not effect on the exception.

Thanks,
Deepak

Good day, everybody!
Recently I’ve upgraded my project to new SciChart version (v3.1.0.4761 (13th July 2014)). Previos version is 3.0.2.4282 (1st May 2014).
I noticed that the project had a lot of freezes. I watched output data and found out this:

A first chance exception of type 'System.InvalidOperationException' occurred in Abt.Controls.SciChart.Wpf.dll
A first chance exception of type 'System.InvalidOperationException' occurred in Abt.Controls.SciChart.Wpf.dll
 SciChartSurface didn't render, because an exception was thrown:
  Message: AxisCollection.GetAxisById('DefaultAxisId') returned more than one axis with the ID=DefaultAxisId. Please check you have assigned correct axis Ids when you have multiple axes in SciChart

  Stack Trace:    в Abt.Controls.SciChart.AxisCollection.GetAxisById(String axisId, Boolean assertAxisExists)
   в Abt.Controls.SciChart.Wpf.TreeNodeAttribute.JoinControl(ISciChartSurface firstFont, RenderPassInfo currentValues, IRenderContext2D currentId)
   в Abt.Controls.SciChart.Wpf.TreeNodeAttribute.RenderLoop(IRenderContext2D renderContext)
   в Abt.Controls.SciChart.Visuals.SciChartSurface.DoDrawingLoop()

A first chance exception of type 'System.InvalidOperationException' occurred in Abt.Controls.SciChart.Wpf.dll
A first chance exception of type 'System.InvalidOperationException' occurred in Abt.Controls.SciChart.Wpf.dll
 SciChartSurface didn't render, because an exception was thrown:
  Message: AxisCollection.GetAxisById('DefaultAxisId') returned more than one axis with the ID=DefaultAxisId. Please check you have assigned correct axis Ids when you have multiple axes in SciChart

  Stack Trace:    в Abt.Controls.SciChart.AxisCollection.GetAxisById(String axisId, Boolean assertAxisExists)
   в Abt.Controls.SciChart.Wpf.TreeNodeAttribute.JoinControl(ISciChartSurface firstFont, RenderPassInfo currentValues, IRenderContext2D currentId)
   в Abt.Controls.SciChart.Wpf.TreeNodeAttribute.RenderLoop(IRenderContext2D renderContext)
   в Abt.Controls.SciChart.Visuals.SciChartSurface.DoDrawingLoop()

How can I fix this error?

Hello,

We would like to use SciChart to show data from a binary file (up to 1 GB!).
What would you suggest as the best method for achieving this?

Thanks

Zoe

More details:
The binary file contains for example the following data: a1b1c1a2b2c2a3b3c3…
where a1 b1 c1 etc are double byte numbers.
In the chart we would like to show 3 series:
serie a: (1,a1) (2, a2) (3,a3) etc
serie b: (1,b1) (2, b2) (3,b3) etc
serie c: (1,c1) (2, c2) (3,c3) etc
Hope this is clear…

I am using the CursorModifier to draw a custom tooltip that has information for all of the series on it. However, the user has asked that the point that is drawn on the series be made more visible by making it larger and red. How do I go about doing that? I’ve seen examples for rollover marker and point marker customization, but can’t find anything for the cursor marker.

Thanks

The default appearance for the vertical line annotation is for the series name and Y value to be displayed next to the data point. Is it possible to move this display elsewhere? On sine wave type data it doesn’t work so good because the text box moves up and down so much as the user scrolls the line annotation. Even just putting it at the bottom of the chart right above the X axis would be a huge improvement.

I assume this is a ControlTemplate modification type issue but I don’t know where to start looking.

Hey guys,

I am setting the GridLinesPanelStyle property of my SciChartSurface to the following Style from the Resources of the parent Border element:

<Style x:Key="GridLinesPanelStyle" TargetType="{x:Type axes:GridLinesPanel}">
    <Setter Property="KeyboardNavigation.ControlTabNavigation" Value="None" />
    <Setter Property="IsTabStop" Value="False" />
    <Setter Property="Background" Value="Transparent" />
    <Setter Property="BorderBrush" Value="{StaticResource ChartBorderBrush}" />
</Style>

When snooping down into the “PART_GridLinesArea” I see that the Background is set to #FF353535 from the “Parent Template”. It gets interesting; I can Delve into the Style property of the same element and see my setters from the above snippet of code.

This approach was working pre-SciChart 2.0 and it appears to be the approach being used by the Examples suite as well, but I can’t yet get that running with my licence (there is another thread asking for help to fix this too ;)!).

Thanks for your support,
Miles

Hi guys,

I’ve noticed that in my application, the Rollover Modifier vertical line is rendering off-center compared to gridlines. I stack a couple of SciCharts on top of each other and they both utilise the Rollover. This is causing a funny look. Please see the attached screenshot for more info.

It also appears that the RolloverMarker is also rendering a little off-center with reference to the gridlines and the datapoints. I’ve attached a screenshot from the SciChart Examples for this one.

Hi

i use scichart in a usercontrol which can be added by a button to the mainwindow. With a contextmenu i change a property in my ViewModel of the usercontrol.
<UserControl.ContextMenu >
<ContextMenu >
<MenuItem Header="Style">
<ComboBox ItemsSource="{Binding Path=ChartStyleList}" SelectedItem="{Binding Path=SelectedChartStyle}">
</ComboBox>
</MenuItem>
</ContextMenu>
</UserControl.ContextMenu>

this property is also bound to the thememanager property in the xaml code.
<my:SciChartSurface HorizontalAlignment="Stretch" Name="Chart" VerticalAlignment="Stretch" sciChart:ThemeManager.Theme="{Binding Path=SelectedChartStyle}" >

The problem is now that when i change the property of one Usercontrol and so the theme of one scichart the others scicharts also change there theme.
Is this an error in my code or is this supposed to happen?

I have a ViewModel class with three controls, two text boxes and a checkbox. The two text boxes are supposed to control minimum and maximum of the chart, and the autoscale should set the AutoRange of the chart.

I’ve got my XAML like this

<sc:SciChartSurface.YAxis>
<sc:NumericAxis AxisTitle="PSD" MaxAutoTicks="5" DrawMinorGridLines="False" AutoRange="{Binding AutoScale}" VisibleRange="{Binding YVisibleRange}">
</sc:NumericAxis>
</sc:SciChartSurface.YAxis>

and in my viewmodel, I have:

    public int Maximum
    {
        get { return _maximum; }
        set
        {
            _maximum = value;
            NotifyOfPropertyChange(() => Maximum);
            YVisibleRange.Max = _maximum;
        }
    }


    public int Minimum
    {
        get { return _minimum; }
        set
        {
            _minimum = value;
            NotifyOfPropertyChange(() => Minimum);
            YVisibleRange.Min = _minimum;
        }
    }

    public DoubleRange YVisibleRange
    {
        get { return _visibleRange; }
        set
        {
            _visibleRange = value;
            NotifyOfPropertyChange(() => YVisibleRange);
        }
    }


    public void ToggleAutoScale()
    {
        AutoScale = !AutoScale;
    }

    public bool AutoScale
    {
        get { return _autoScale; }
        set
        {
            _autoScale = value;
            NotifyOfPropertyChange(() => AutoScale);
        }
    }

The auto scale functionality always works. However, only when I have not used auto scale at all, does the minimum maximum stuff work.

I would like for auto scale to completely control the graph when it’s on, and when it’s off, minimum/maximum should control the range of the graph. How do I achieve this?

i have a problem with zoom : i can’t declare my function for charting inside the constructor of my class no also in the function loaded for the simple reason because i must pass two list for this function “public void CreateDataSetAndSeries(List lstX, List lstY)”, so, i create my function like this in my .XAM.cs class :

public void CreateDataSetAndSeries(List lstX, List lstY)
{
series0 = new XyDataSeries<DateTime, double>();

        using (this.sciChartSurface.SuspendUpdates())
        {

               series0.Append(lstX, lstY);

        }           
        lineSeries.DataSeries = series0;
        sciChartSurface.ZoomExtentsY();
   }

and for my class.xaml i write this :
<SciChart:SciChartSurface.ChartModifier>

<SciChart:RubberBandXyZoomModifier/>

                <SciChart:ZoomPanModifier ExecuteOn="MouseRightButton"/>
                    <SciChart:ZoomExtentsModifier ExecuteOn="MouseDoubleClick"/>

                <SciChart:CursorModifier ReceiveHandledEvents="True" ShowAxisLabels="True"  ShowTooltip="True" ShowTooltipOn="MouseRightButtonDown"/>

the problem i can’t did the zoom So what i can do ?
waiting for your response thank you !

I want to change the visibility of annotations in .cs file

MyLine.Visibility = System.Windows.Visibility.Hidden;

where MyLine is an annotation

s:LineArrowAnnotation x:Name=”MyLine” X1=”1″ Y1=”0″ X2=”1000″ Y2=”0″ Stroke=”Black” StrokeThickness=”1″ Visibility=”Visible” StrokeDashArray=”10,5″

However even after changing it to hidden the line still displays,

Any suggestions are appreciated..

PS: I am able to modify the location with no problem at all..

A useful addition to the OhlcDataSeries would be an Append(datetime,value) method that would automatically determine whether to update the latest open, high, low, close or add a new bar based based on the values passed in, the current bar time/values and the BarTimeFrame property.

Thanks again

Paul