Numeric axes should be able to specify their PlotMode as categorical axes do (currently numeric axes use hardcoded OnTicks plot mode).

Depending on the zoom level and height of chart, sometimes the first (bottom) label of the chart is not rendered when the vertical axis is a categorical one and the plot mode is BetweenTicks or OnTicksPadded. 

PlotArea occasionally stops refreshing in live data scenario with asynchronous updates (multithreading).

Allow to track points that intercept vertical line from mouse position (as now)  or points that intercept horizontal line from mouse position.
So allow to choose TrackDirection = Horizontal/Vertical

Thanks.
marc.

Add grid line style selector

The exception is reproduced only if the Visibility is initially bound to a property that returns Collapsed.

This can be reproduce with the chart indicators that derives from LineIndicatorBase. For example, MovingAverageIndicator or MomentumIndicator.

To resolve this you can bind the Opacity property instead of Visibility.

This is reproducible only when the chart's automation peers are used. For example, they are used by default when you use the chart on a touch screen. Or when an accessibility tool is used on the application with the chart.

You can work it around by disabling the auto peers (http://docs.telerik.com/devtools/wpf/common-ui-automation).

AutomationManager.AutomationMode = AutomationMode.Disabled;

The exception is reproducible when the chart contains series with RenderOptions=Direct2DRenderOptions.

The error message is:

HRESULT: [0x8876086A], Module: [SharpDX.Direct3D9], ApiCode: [D3DERR_NOTAVAILABLE/NotAvailable], Message: Unknown

Some of the data points plotted in the chart are not positioned as expected in a scenario with DateTimeContinuousAxis with SmartLabelsMode=SmartStep and PlotMode=OnTicksPadded or BetweenTicks.

The stroke property of the PaletteEntry is not respected.

Add a mechanism that allows the chart to process only the data within the viewport. This should improve the memory footprint and the performance of the chart in scenarios with big number of data points.

Create  a chartview with a linear axis, set minvalue to 2014-11-21, max = 2014-11-24, create a series with only one datapoint with a date=2014-11-23.
The barchart graph will show a nice bar, but the X-axis will show you 2014-11-21, although the datapoint is for 2014-11-23!

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/

Convert ZIndex property of the series to dependency property

The series are not rendered as expected when using Direct2DRenderOptions and hiding labels (by setting the LabelInterval, SmartLabelsMode or via a different approach)

The RadCartesianChart's series allows you to provide a collection of primitive types (like List<int>) to its ItemsSource which will render a proper chart, as shown in the Create Data-Bound Chart article. 

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.

The feature needs to cover functionality as follows: The logarithmic axis has an exponent step (1, 10, 100, 1000) and the current ticks support of the axis only plots evenly distributed ticks. Clients, however, sometimes need to display unevenly distributed ticks (1, 2, 3, 4, 5, 6, 7, 8, 9, 10, and so on).