Enable the TrackBallInfo to be vertically aligned (e.g. the bottom of the chart).
Currently, RadChartView doesn't support ChartToolTipBehavior for series which are using BitmapRenderOptions or Direct2DRenderOptions. The tooltip doesn't display.
Create 2-dimensional contour plot from unstructured 3-dimensional data. Means the points are randomly arranged in the XY plane. Attached file shows an example of what I would like to achieve. I think the contour plot Telerik does currently requires a structured grid, i.e. full grid of NxM points.
When thousands of items are displayed, the tooltip and trackball behaviors may become slow, because of inefficient searching for the closest datapoints. Performance can be sped up by implementing a custom search and manually creating a ChartDataContext via the GetDataContext method.
Ability to specify a cursor during a drag-to-pan operation. One way to work-around this is to use the attached property in the sample project attached here. This is the code needed to start using the solution: <telerik:RadCartesianChart local:ChartUtilities.PanCursor="Hand" />
Add mechanism for getting the layout slot of the axis
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.
ChartDataSource control should perform the sampling operation asynchronously in a background thread so that it is not blocking the UI thread.
When setting MajorTickInterval, the actual interval used in display is adjusted when zooming to show a reasonable number of ticks. However, if LabelInterval is used along with it to achieve the desired number of labels on the chart, LabelInterval is not adjusted along with MajorTickInterval, resulting in too many or too few labels being displayed. Moreover the automatic adjustment of MajorTickInterval cannot be disabled, leading to problematic label display that cannot easily be handled by the developer without inside knowledge of the algorithm. Nice features would be: - Adjust LabelInterval along with MajorTickInterval to keep approximately the same number of labels on the chart. - Given the above, add an option to allow the Chart to determine the optimal MajorTickInterval and LabelInterval by itself (currently if MajorTickInterval is not specified, it displays ALL category ticks which can be way too many for the display) - Add an option to disable the MajorTickInterval automatic adjustment if the programmer wishes to handle this manually This suggestion arose out of this forum thread, which includes an example demonstrating the issue: http://www.telerik.com/forums/majortickinterval-trouble-when-zooming
Numeric axes should be able to specify their PlotMode as categorical axes do (currently numeric axes use hardcoded OnTicks plot mode).
Implement an indication for negative areas in a single AreaSeries/RangeSeries. For example the negative areas to be drawn in one color and the positive areas in another. For more information on the visual representation you can take a look at the following blog post: http://peltiertech.com/area-chart-invert-if-negative/
Make the StepLineSeries being able to plot a 'step' for a single point.