Approved
Last Updated: 09 Sep 2019 10:09 by ADMIN
Created by: Martin Ivanov
Comments: 0
Category: ChartView
Type: Feature Request
1
Implement a feature that allows you to start an animation when the values of a data point are changed. For example, if you change the value on the vertical axis from 5 to 10, a smooth animation updating the visual element should be started.
Approved
Last Updated: 15 Aug 2019 06:22 by ADMIN
The stroke property of the PaletteEntry is not respected.
Completed
Last Updated: 02 Oct 2019 08:48 by ADMIN
Release LIB 2019.3.1007

When you set the Palette property to a new instance of ChartPalette in XAML, a NullReferenceException is thrown. This happens when you click inside the chart control in the Visual Studio designer.

The exception reproduces only if the "Miscellaneous" category in the "Properties" pane of Visual Studio is expanded.

To work this around, set the Palette property in code:

C#:

public MainWindow()
{
    InitializeComponent();
    this.chart.Palette = (ChartPalette)this.Resources("cpBarChart");
}

VB.NET:
Sub New()
    InitializeComponent()
    Me.chart.Palette = DirectCast(Me.Resources("cpBarChart"), ChartPalette)
End Sub

 

 

Approved
Last Updated: 16 May 2019 08:49 by ADMIN
Created by: Martin Ivanov
Comments: 0
Category: ChartView
Type: Feature Request
1
Currently, the PanZoomBar is not themed across the themes. Consider improving this by applying different colors to the Thumbs based on the applied theme.
Declined
Last Updated: 26 Sep 2019 13:19 by ADMIN
You can observe the difference between the ChartView and an Excel Chart with the same data in the attached pictures.
Completed
Last Updated: 17 Apr 2019 10:09 by ADMIN
Release LIB 2019.1.415 (04/15/2019)
The ToolTip behavior respect how the series are added to the chart. Setting ZIndex property to reorder them will not be respected by the ToolTip.
Completed
Last Updated: 21 Feb 2019 11:20 by ADMIN

When you change series datapoints and then play ChartRevealAnimation the following InvalidOperationException might occur:

 Cannot call the ClockController.SkipToFill method for a Clock that has a Duration or RepeatDuration of Forever, because this Clock will never reach its fill period.
=====
Workaround:
You can try calling PlayAnimation in Dispatcher:

  Dispatcher.BeginInvoke(new Action(() =>
            {
                this.LineSeries1.PlaySeriesAnimation();
            }));

Declined
Last Updated: 29 Jan 2019 12:47 by Maciej
Currently, the control relies on its IsLoaded property to determine if it should render its items (axes, data points, annotations, etc.). However, if you measure and arrange the control in code without adding it into the visual tree, the IsLoaded property is not set to True, therefore the chart is not rendered and the image gets empty.

Original description
----------------------------------

Title: RadCartesianChart incorrecly rendered

We're rendering (Telerik) charts in code behind, to include them in a dynamic documentation.

For most controls it works fine - using standard methods (rendering control with System.Windows.Media.Imaging.RenderTargetBitmap and saving the result BitmapSource to disk)

However, it's impossible with RadCartesianChart with CategoricalSeriesDescriptor or ChartSeriesDescriptor. What we are able to get are axes and descriptions, but not bars.

I'm attaching an example - MainWindow displays a chart. I try to also create the chart in code behind. 
In CreateAndSaveChart() method I create a chart with a DataContext, then I call Measure and Arrange methods on it. At this stage the control should be properly initialized and ready to render. (For simplicity I omit rendering control with RenderTargetBitmap - you can preview the control with WPF Tree Visualizer, which will give you the same result). Well, if you preview the control at this stage, you'll see that the chart is missing bars. 
Next I create a new Window with my chart as a content, and display it for a while. Now the chart is fully and correctly rendered. As a workaround we display some Telerik chart in a transparent window to fully render, but such a workaround was reported not to work for some clients and is unacceptable in a long run. With most of Telerik charts we don't have such problems.

Other issue:
- for other Telerik charts we need to wait a few seconds to have it fully rendered. It's be better to have an event informing that the control is ready. 

I'll be happy to add more details if you need any.

* While experimenting with the example I've suddenly managed to render the chart with bars, but this time the rendered size was incorrect (very small)
Approved
Last Updated: 16 Oct 2018 11:55 by ADMIN
Approved
Last Updated: 12 Mar 2019 14:39 by ADMIN
Completed
Last Updated: 30 Jan 2019 15:16 by ADMIN
If you define the chart in a new window and open it from the app main window, and then close the window, the chart stays in memory. This is reproducible only in a data binding scenario - the ItemsSource of the chart series should be set to a ObservableCollection<T>. 

Additionally, the collection bound to the ItemsSource of the series should be still alive. For example, it can be defined in the view model of the main window that opens the window with the chart.

To resolve this you will need to set the ItemsSource of all chart series in the window to null.

Scheduled for:
The fix for this issue will be available with LIB (version 2019.1.204) scheduled for publishing on Monday, 4th February 2019.
Declined
Last Updated: 04 Jul 2018 10:21 by ADMIN
      How can I hide the point in the lineSeries with the large data,and then zoom in by mousewheel,the point can be show in the lineSeries,when zoom out again,the point can be hide.
     Because with large data in a view,if show the point, the lineSeries's performance is poor,and the details area is not necessary,only when zoom in,we hope to show the point.
Approved
Last Updated: 18 Jun 2018 10:17 by ADMIN
Completed
Last Updated: 14 Jun 2018 05:26 by ADMIN
ADMIN
Created by: Martin Ivanov
Comments: 1
Category: ChartView
Type: Bug Report
0
On a desktop device the tooltip is shown when the mouse enters the data point's visual element. On touch device the tooltip should be displayed when you tap (or tap and hold) on the visual element. Currently, this doesn't work. 

To work this around you can implement custom tooltip behavior using RadToolTip and TouchManager.

https://docs.telerik.com/devtools/wpf/controls/radtooltip/overview

https://docs.telerik.com/devtools/wpf/controls/touchmanager/overview
Completed
Last Updated: 04 Jun 2018 07:18 by ADMIN
During Series animation, the stroke of the AreaSeries (area, splinearea, scatterarea, steparea) is not animated.
Approved
Last Updated: 14 May 2018 12:45 by ADMIN
Gaps appear between the bars in the stacks when the series are populated with negative and positive values. Check the attached picture.

If you have a scenario with mixed values (positive and negative) use RangeBarSeries instead of BarSeries.
Approved
Last Updated: 26 Jun 2018 14:18 by Dinko
ADMIN
Created by: Dinko
Comments: 2
Category: ChartView
Type: Feature Request
2

			
Approved
Last Updated: 23 Mar 2018 12:53 by ADMIN
This reproduces when the axis' SmartLabelMode is enabled. For example, set to SmartStep. 

See the attached video.

As a workaround you can disable the smart label mode and manually calculate the range when zooming. You can use its Minimum, Maximum, MajorStep and MajorStepUnit properties.
Completed
Last Updated: 12 Feb 2018 11:37 by ADMIN
The exception is reproducible when you are using SplineSeries with DateTimeContinuousAxis. You need to add data points to the chart with a gap between the dates.
Approved
Last Updated: 02 Nov 2017 08:57 by Vladimir
ADMIN
Created by: Vladimir Stoyanov
Comments: 0
Category: ChartView
Type: Feature Request
3
Introduce a way to set a geometry for the chart series' data points. Currently you cannot easily change the geometry of the default visual of PointSeries and LineSeries, for example. We can also introduce a default visual geometry selector.
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