Approved
Last Updated: 03 Jan 2017 21:10 by Melina
ADMIN
Created by: Petar Marchev
Comments: 1
Category: ChartView
Type: Feature Request
4

			
Approved
Last Updated: 03 Jan 2017 21:09 by ADMIN
ADMIN
Created by: Petar Marchev
Comments: 0
Category: ChartView
Type: Bug Report
2

			
Approved
Last Updated: 03 Jan 2017 21:08 by BrianWomack
Created by: Marea
Comments: 1
Category: ChartView
Type: Feature Request
6
I would like to be able to create a histogram where both the x and y axis are linear series and where I can specify the start and end position of each bin (not just one). Previously described workarounds include using StepLineSeries and bar series which cannot have two linear series. I cannot use a scatter plot series as they do not provide the step-wise look of the histogram.  Please add this support! 
Approved
Last Updated: 03 Jan 2017 21:08 by ADMIN
Currently, RadChartView doesn't support ChartToolTipBehavior for series which are using BitmapRenderOptions or Direct2DRenderOptions. The tooltip doesn't display.
Approved
Last Updated: 03 Jan 2017 21:08 by ADMIN
ADMIN
Created by: Peshito
Comments: 0
Category: ChartView
Type: Feature Request
2
Provide a way that the CrossHair behavior looks like theTrackBall's one so that the Crosshair follows just the chart's series. Something like a TrackBall with the horizontal and vertical line of a Crosshair.
Approved
Last Updated: 03 Jan 2017 21:07 by Dietmar.2
Enable the TrackBallInfo to be vertically aligned (e.g. the bottom of the chart).
Approved
Last Updated: 03 Jan 2017 21:01 by ADMIN
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
Approved
Last Updated: 03 Jan 2017 21:01 by ADMIN
ADMIN
Created by: Peshito
Comments: 0
Category: ChartView
Type: Feature Request
2
Make the StepLineSeries being able to plot a 'step' for a single point. 
Approved
Last Updated: 03 Jan 2017 21:01 by ADMIN
ADMIN
Created by: Dinko
Comments: 0
Category: ChartView
Type: Feature Request
2

			
Approved
Last Updated: 03 Jan 2017 20:57 by ADMIN
Implement Label Fit Mode In the polar chart to avoid label overlapping.
Approved
Last Updated: 03 Jan 2017 20:54 by ADMIN
When there is defined a ChartPanAndZoomBehavior and the axes of the chart are switched at run-time, the orientation of the PanZoomBar elements it is not changed.

Workaround:
Get the PanZoomBar element and set its Orientation property.

private void TrySetOrientation(CartesianAxis axis, Orientation orientation)
{
    var panZoomBar = Telerik.Windows.Controls.ChildrenOfTypeExtensions.FindChildByType<PanZoomBar>(axis);
    if (panZoomBar != null)
    {
        panZoomBar.Orientation = orientation;
    }
}

private void SwapAxes()
{           
    // Swapping code here

    this.Dispatcher.BeginInvoke((Action)(() =>
    {
        this.TrySetOrientation(this.chart.HorizontalAxis, Orientation.Horizontal);
        this.TrySetOrientation(this.chart.VerticalAxis, Orientation.Vertical);
    }));
}
Approved
Last Updated: 03 Jan 2017 20:54 by ADMIN
When the values of the data points have great values and the axis has a very small manual range, the Path element does not render correctly and is at times not visible at all.

Workaround:
A possible way to resolve this is to use the Direct2DRenderOptions. The different render modes use a completely different rendering logic.
<telerik:LineSeries.RenderOptions>
 <telerik:Direct2DRenderOptions />
</telerik:LineSeries.RenderOptions>
Approved
Last Updated: 03 Jan 2017 20:38 by ADMIN
ChartView: InvalidCastException is thrown when using series provider and the property that provides the series' Type is declared in an abstract class
Approved
Last Updated: 03 Jan 2017 20:37 by ADMIN
Approved
Last Updated: 03 Jan 2017 20:23 by ADMIN
Approved
Last Updated: 20 Dec 2016 09:09 by ADMIN
Completed
Last Updated: 09 Nov 2016 11:18 by Niall
Currently when sampling is used to generate the data points, the DataItem property of the DataPoint is null and there is no way to find out which data items have been used to generate the data point. A new property can be introduced (DataItems) which can contain the data items in mind.

Available in R1 2017 Release
Completed
Last Updated: 28 Oct 2016 08:52 by ADMIN
ADMIN
Created by: Dinko
Comments: 0
Category: ChartView
Type: Feature Request
1
Add support for 3D Series Type in RadChartView.

A RadCartesianChart3D was introduced with R3 2016. You can use its BarSeries3D to easily achieve the Manhattan chart visualization.

See the documentation: 
http://docs.telerik.com/devtools/wpf/controls/radchartview3d/overview
See the SDK examples: 
https://github.com/telerik/xaml-sdk/tree/master/ChartView3D/WPF
See the demos: 
https://demos.telerik.com/wpf/
Approved
Last Updated: 11 Oct 2016 12:45 by Marcello
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.
Declined
Last Updated: 11 Oct 2016 08:42 by ADMIN
Created by: Marcello
Comments: 5
Category: ChartView
Type: Feature Request
2
Hi,

I worked with a lot of chart components for Wpf. I think Telerik offer the best charts architecture that allow to obtain great results in every scenario.

After years of use, I think is possible to  improve more the global architecture.

1) Series Dataset

Charts now works with Points. I think that a better solution require a more abstract structure as a virtual "Dataset".
A dataset reuire a type [conform to X axis], tipically X can be a double, a datetime, a label.
Dataset return info about poits, tipically:
- Min X
- Max X
Dataset return a DataContext that allow to draw chart:
- GetCloserX to an X value [Trackball/Lables...]
- GetPoints from/to [Pan/Zoom]

This approach is really more efficent and powerfull. In example you can simply define a Dataset as a Formula:

Dataset "CosX" based on doubles.
MinX=-inf
Maxx=+inf
GetDataContext from/to -> Return allways 100 points x, cos(x).

So you can obtain:

- Ultraefficient series using GetDataContext algorithms for specific cases, in example, ordered data.
- Trend lines using "Formula" series

2) Only one series, with subtypes.

It is really annoying change series type.
I think a chart must contains a series and this series can show Line, Area, Split Line, Markers, Columns...

To write a good "option panel" that allow user to set Line Thickness, Line Split or standard, Area opacity, Area Color, Marker Type, Marker Colors, Columns Borders... require today a giant work and elaborate code that add and remove serie, reassign points, set z-index, remove and add series in legend... with an incredible useless works in points.

3) More accurate axes definition.

Now Chart and Series expose Horizontal and Vertical Axis property.
I think this is terrible properties :-).

"Horizontal" and "Vertical" is depending chart orientation. Furthermore now, first X/Y axis must be set in chart, others in series. Moving series from an axis to another is really annoying: if new axis is first you must set is null else you must set it...

I think Chart must expose XAxesCollection and YAxesCollection. This collections must contains all X and Y axes.
Series [and annotation and every object that uses axes] must expose XAxis and YAxis as the Axis object or Axis index.

4) Chart orientation

Today a simple chart rotation require a lot of code. The developer must be invert Horizontal and vertical axes, change axes in series and annotations, zoom/pan stop to work...
When this is combined with point 2) problems the result is an nightmare.

I understand this require a big work and a lot of compatibility problems [Telerik already exposes two charts versions, three is probably a little bit confused].

But if Telerik obtains this features I think it become the most unattainable charts component producer of the world.

Decline reason: Most suggestions were tried in the old RadChart and they weren't working very well.