Last Updated: 10 Jan 2022 09:29 by ADMIN
 Currently chart's horizontal axis is at the very bottom of the chart.

When there are negative values in the vertical axis, I want the horizontal axis to cross the vertical axis on 0

Last Updated: 17 Dec 2021 12:29 by ADMIN
When the Chart Series' ItemsSource is bound to an ObservableCollection, frequent updates of that collection leads to a Java.Lang.IndexOutOfBoundsException on Android.
Last Updated: 07 Dec 2021 11:09 by ADMIN
Created by: Narsimha
Comments: 0
Category: Chart
Type: Bug Report

When rendering null values, there is inconsistency between the platforms. On Android and on iOS gap is displayed, on UWP the lines are connected: 



Last Updated: 23 Nov 2021 11:33 by ADMIN

Bar series disappear when applying zoom and then pan

The behavior can be reproduced in a horizontal bar series

The vertical axis is categorical, and the horizontal axis is numerical

                <telerik:ChartPanAndZoomBehavior PanMode="Vertical"
                                                 ZoomMode="Both" />
                <telerik:CategoricalAxis />
                    <telerik:NumericalAxis Minimum="0"
                <telerik:BarSeries CategoryBinding="Category"
                                        ItemsSource="{Binding Data}" />

Replace the axis: 
Use categorical axis for the horizontal axis and numerical axis for the vertical axis 

Last Updated: 05 Oct 2021 08:56 by ADMIN
Created by: Ajaysinh
Comments: 2
Category: Chart
Type: Bug Report

I am using Telerik RadCartesianChart to display 5 different series. As per requirement, I need to use a secondary vertical Axis for the 5th series. I followed https://www.telerik.com/forums/multi-axes-chart-xamarin-ios to achieve that.  But if I bind data after a delay then it's not working for iOS.

1. Bind series data after delay.

For more details please refer attached files.

I look forward to your reply!

Ajay Dodiya | Sr. Xamarin Developer
Last Updated: 20 Sep 2021 15:34 by ADMIN
If a tooltip is already displayed in portrait orientation, rotating to landscape causes the tooltip to end up in a very wrong location.
Last Updated: 06 Sep 2021 08:37 by ADMIN
Fill color is not working in AreaSeries when negative values are given on iOS 12.
Last Updated: 02 Jul 2021 08:26 by ADMIN
The Chart loses all the UI customizations made in the iOS platform renderer when the Series are updated, for example, if you show/hide certain Series or updated their ItemsSource.
Last Updated: 14 Jun 2021 04:48 by ADMIN

Annotation (Grid line ) for the DateTimeContinuousAxis is not visualized on iOS. It works as expected on Android.

Add grid line annotation for the datetime axes. the grid lines are not visualized on iOS. 

<telerikChart:RadCartesianChart x:Name="chart">
        <local:ViewModel />
        <telerikChart:DateTimeContinuousAxis LabelFitMode="Rotate" 
        <telerikChart:NumericalAxis />
        <telerikChart:SplineSeries ValueBinding="Value"
                                    ItemsSource="{Binding Data}"
        <telerikChart:CartesianGridLineAnnotation Stroke="#0E72F6" 
                                                Value="{Binding Threshold}"
                                                Axis="{x:Reference horizontal}">
                <x:Array Type="{x:Type x:Double}">

Use CategoricalAxis.

Last Updated: 04 Jun 2021 14:34 by ADMIN
Currently on iOS the PanOffset is reset when the underlying data is updated, while the same behavior is not observed on Android.
Last Updated: 06 May 2021 12:57 by ADMIN
When the tooltip is displayed at a certain data point and the data is updated from code-behind, the tooltip stays with wrong data. The expected behavior is the tooltip to be hidden in such case.
Last Updated: 07 Apr 2021 06:37 by Stefan
Applying ChartTrackBallBehavior to a CartesianChart with ScatterLine/ScatterPoint series does not take any effect.
Last Updated: 03 Mar 2021 09:27 by ADMIN
Support the ability to apply palette (separate color) per point for a line series.
Last Updated: 24 Feb 2021 13:38 by ADMIN
Release R1 2021 SP1
When you set RadLegend`s VerticalOptions or HorizontalOptions to Center - the control disappears. This can be easily observed when the Orientation of the legend is horizontal, but can be reproduced in vertical mode too by setting the HorizontalOptions to Center.
Last Updated: 24 Feb 2021 13:04 by ADMIN
Release R1 2021 SP1
Last Updated: 24 Feb 2021 13:03 by ADMIN
Release R1 2021 SP1

An exception is thrown on Android when this code is executed

            this.chart1.VerticalAxis = new NumericalAxis { Minimum = 300, Maximum = 400 };
            this.chart1.VerticalAxis = new NumericalAxis { Minimum = 100, Maximum = 200 };

Last Updated: 19 Feb 2021 18:04 by RAMAKANT
Created by: RAMAKANT
Comments: 6
Category: Chart
Type: Bug Report

Hi Team,

If you set the PanOffset in XAML, it is not applied. 

Does not work:

<telerikChart:RadCartesianChart x:Name="MyChart"  Zoom="2, 1"  PanOffset="-400,0" >

I would expect that the RadChartView renderer would be responsible for handling this after the control is loaded and the series/axis is rendered (see workaround).


If I subscribe to the ChartView's NativeControlLoaded event and wait approx 100ms before calling PanOffset, it will work.


<telerikChart:RadCartesianChart x:Name="MyChart"  Zoom="2, 1" 

private async void MyChart_OnNativeControlLoaded(object sender, EventArgs e)
    await Task.Delay(100);
    MyChart.PanOffset = new Point(-400, 0);

Takeaway and Action Requested

The takeaway, and basis of this Bug Report, is that the control should internally perform this delay check and set the PanOffset.

This will enable MVVM scenarios because (I originally wanted to bind the PanOffset value from my view model).

Thank you,


Last Updated: 17 Feb 2021 11:27 by ADMIN
Created by: Nikolay
Comments: 14
Category: Chart
Type: Feature Request
A common scenario for the Chart is to have several Y-Axis, where some could be on the left, others could be on the right side of the Chart.
Last Updated: 17 Feb 2021 10:24 by ADMIN
Created by: Milos
Comments: 0
Category: Chart
Type: Feature Request
Provide an option to drag and drop chart annotations.
Last Updated: 17 Feb 2021 10:16 by ADMIN
Created by: Milos
Comments: 0
Category: Chart
Type: Feature Request
Provide an option to move (drag and drop) data points in chart control. 
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