Unplanned
Last Updated: 31 Jan 2017 06:43 by ADMIN
ADMIN
Created by: Martin Ivanov
Comments: 0
Category: ChartView
Type: Feature Request
3
Add mechanism for getting the layout slot of the axis
Unplanned
Last Updated: 07 Sep 2016 07:28 by ADMIN
ADMIN
Created by: Petar Marchev
Comments: 0
Category: ChartView
Type: Feature Request
5
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" />
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.
Completed
Last Updated: 24 Aug 2016 14:44 by ADMIN
The trackball becomes unresponsive in a live data scenario with more than one chart. The issue is observed in a scenario with a categorical axis and grid lines originating from it. 

The fix is available in LIB Version: 2016.2.829.
Unplanned
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.
Completed
Last Updated: 04 Nov 2022 13:38 by ADMIN
Release R2 2022
ADMIN
Created by: Dinko | Tech Support Engineer
Comments: 0
Category: ChartView
Type: Feature Request
2

			
Unplanned
Last Updated: 31 Jan 2017 06:41 by ADMIN
Unplanned
Last Updated: 04 Jan 2017 07:22 by ADMIN
In a multiple series scenario if one series gets removed, an internal axis flag is incorrectly reset resulting in the horizontal axis displaying only one label when SmartLabelsMode is used. One way to work-around this is to add an empty dummy series after removing a real series:

            this.chart1.Series.Remove(EmptyDummySeries);
            if (this.chart1.Series.Count > 0)
            {
                this.chart1.Series.RemoveAt(this.chart1.Series.Count - 1);
                if (this.chart1.Series.Count > 0)
                {
                    this.chart1.Series.Add(EmptyDummySeries);
                }
            }
Completed
Last Updated: 09 Mar 2023 06:43 by ADMIN
Release R1 2023
Created by: Marea
Comments: 5
Category: ChartView
Type: Feature Request
8
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! 
Completed
Last Updated: 03 Jun 2016 13:13 by ADMIN
Unplanned
Last Updated: 04 Jan 2017 06:34 by ADMIN
Add auto-range ability for the numeric axes that adjusts its range in accordance to the visible/zoomed data to show the data more clearly
Completed
Last Updated: 19 Oct 2018 10:45 by ADMIN
If the annotation and its label are out of the viewport (the plot area) and then use the PanZoomBar to scroll to it, the label is not displayed. It appears after the chart layout is updated (ex: resize or zoom).
Completed
Last Updated: 08 Apr 2016 13:11 by ADMIN
ADMIN
Created by: Martin Ivanov
Comments: 0
Category: ChartView
Type: Bug Report
0
The SelectStyle() method of the DefaultVisualStyleSelector is never called

Will be available in R2 2016 Release.
Unplanned
Last Updated: 03 Jan 2017 21:12 by ADMIN
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. 
Completed
Last Updated: 19 Oct 2018 13:57 by ADMIN
When you try to set the LabelDefinition property in style it is not applied.

As a workaround you can create an attached property to which you can apply the custom definition and set it to the LabelDefinition property of the annotation in its OnPropertyChangedCallback.
Unplanned
Last Updated: 04 Jan 2017 07:34 by ADMIN
MovingAverageIndicator doesn't recalculate its data points when a new item is added in its ItemsSource at runtime

Workaround:
To update the data points of the indicator reset its Period property when a new item is added in the ItemsSource. For example:

// add new item
var indicator = chart.Indicators[0] as MovingAverageIndicator;
var period = indicator.Period;
indicator.Period = 0;
indicator.Period = period;
Completed
Last Updated: 28 Oct 2016 08:52 by ADMIN
ADMIN
Created by: Dinko | Tech Support Engineer
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/
Completed
Last Updated: 29 Jan 2016 12:16 by ADMIN

Available in LIB version: 2016.1.21
Completed
Last Updated: 28 Apr 2016 13:44 by ADMIN
If you change the axes of a series at runtime in the following order the axis won't be rendered as expected.
1. Set the series' VerticalAxis property to a new axis instance
2. Set the series' VerticalAxis property to another new axis instance
3. Set the series' VerticalAxis property to the axis' instance created in step 1

This is observed in a scenario with two chart series and only the axis of one of the series is drawn incorrect.

When step 3 is performed, the axis is drawn at incorrect position. Then if you resize, the axis will be repositioned but without any ticks or labels.

Available in LIB Version 2015.3.1123.