ArgumentException occurs when the ItemsSource of the chart series is populated with items that implement the ICustomTypeProvider interface and the value binding properties of the series (ValueBinding, CategoryBinding, YValueBinding, XValueBinding, etc.) are assigned to dynamic properties. This happens when the value binding properties are assigned to PropertyNameDataPointBinding object pointing to a property name. This is also what happens if you set the properties in XAML using string values.
To work this around, you can use the GenericDataPointBinding<T> class defined in code-behind in order to assign the value binding properties.
Or alternatively, you can implement custom PropertyNameDataPointBinding class and override its GetValue() method. In the method, you can check the item type and if it is ICustomTypeProvider, and then execute custom code that gets the value. The custom PropertyNameDataPointBinding implementation is shown in the attached CustomPropertyNameDataPointBinding.zip file. To use the custom binding class in XAML, you can use the following syntax:
<telerik:ScatterPointSeries.YValueBinding>
<local:CustomPropertyNameDataPointBinding PropertyName="Y" />
</telerik:ScatterPointSeries.YValueBinding>
The FadeOtherSeries hover mode doesn't work when the lightweight render options (Direct2D and Bitmap) are used.
You can find one way to work this around in the attached project.
Please add the Contour series for showing the scatter (X,Y) lines which are connecting the points with the equial Z- coordinate. Currently a scatter 3D surface (X,Y,Z) can now be shown only as 3D chart.
Often it is necessary to show 3D surface as 2D chart with lines connecting (X,Y) points with "same Z-level" .
Samples:
- Geographic map showing the contour lines of the same height: https://en.wikipedia.org/wiki/Contour_line ,
- Map of the points with the same temperature inside the 3D container,
- ...
References:
- https://www.infragistics.com/help/winforms/datachart-scatter-contour-series
- https://www.infragistics.com/help/winforms/geographicmap-using-geographic-contour-line-series
- https://mathworld.wolfram.com/ContourPlot.html
LabelRotationAngle applies to labels only in horizontal axis.
It is mainly needed in Vertical axis, when the chart is rotated externally, when placed in rotated panel or control. In this case the vertical axis take the role of a horizontal axis visually and easy way to rotate all labels is needed for readability.
The problem arises when we have many graphs on one window and when we scroll to the bottom then to the middle of the window and then resize the width of the window, not all graphics dynamically resize, some harden to the previous size.
I am attaching a project in which you can reproduce the problem.
And I am attaching a video where the problem is clearly demonstrated.
Please solve the problem as soon as possible for our product it is critical!
You can easily implement it by subscribing to the MouseLeftButtonDown event of the chart series and change the series' Stroke or Fill property.
Currently, this is not supported if you use the sampling feature of the chart (ChartDataSource). ChartDataSource can't work with collections with primitive types. Add support for this.
When a chart have long labels on the X axis (like date and time) the zoom is not accurate on the horizontal extents with both mouse wheel and drag area.
The reason is probably that the screen coordinates of the selected area are not mapped correctly on the X axis. The mapping works fine for tooltip.
You can verify this behavior in the attached Solution. In the images you can see the selected area (01), that the zoomed area is a region with no points (02) and the actual position of the points.
Add a mechanism like a method override or a property that can alter this behavior. In this case, if the data item of the generated data point contains a null value, the visual element should be dropped (missing) as in the standard chart series.
I would like the possibility to change the color of a line depending on the value.
For example:
I have values between -1 to 10.
If the value is -1 I would like the color (or possible the opacity) to change until it goes back to 0 or above.
Issue1) When no RenderTransformOrigin is set to ScaleAnimation, all slices should be scaled from the pie chart center point. Currently thiss is not true, to better reproduce it , set MaxScale > 1 and notice slices overlap each other at the end of the animation.
Issue2) When RenderTransformOrigin is set to , for example (0, 0), all slices should start animating from topleft corner of the chart. Currently only the first one is animated from top left and all others are animated from pie chart center.
Add support for conditional styling. This should include support for data binding in the fill and stroke properties of the element from the DefaultVisualStyle, or support for DefaultVisualStyleSelector, or another type of API.
