Unplanned
Last Updated: 16 Jan 2023 11:53 by ADMIN
For Chart with ScatterLineSeries, in case the ItemsSource contains points with following sample horizontal values: 0, 2, 4, 6, 8, 6, 4, 2, 0, ZoomBehavior does not work correctly on iOS  - when ZoomMode is set to "Both", the  points are taken in incorrect order and the result is a zig-zag chart.
Unplanned
Last Updated: 18 Nov 2022 17:13 by Matthew
Created by: Matthew
Comments: 0
Category: Chart
Type: Feature Request
0
Add support for range series. The series are available in the native charts
Android - RangeBarSeries 
iOS RangeBar and RangeColumn Series
UWP RangeBar, Range Series.

Please add these series to Chart for Xamarin.Forms. 
Duplicated
Last Updated: 06 Oct 2022 05:05 by ADMIN
Created by: nirbhay
Comments: 1
Category: Chart
Type: Feature Request
0
Currently there is no way to configure chart tooltip via xaml
Unplanned
Last Updated: 02 Sep 2022 08:17 by paul
1. Change the view from BarSeries to Pie Series
     => Observe the PieChart loads as expected
2. Change the selection back to "Bar Series"
     => Observe BarSeries continues to operate as expected
3. Change the selection from "Bar Series" to "Pie Series"
     => Observe the following exception

Java.Lang.NullPointerException: 'Attempt to read from field 'double com.telerik.widget.chart.visualization.pieChart.PieUpdateContext.radius' on a null object reference'

Workaround: 
Remove the ShowLabels from Pie Series.
Unplanned
Last Updated: 01 Jun 2022 08:57 by Kelsey
If you add a View Annotation with an image to the iOS Chart through a custom renderer and the Chart has zoom and pan behavior applied, the annotation displays outside the axes when the Chart is zoomed.
Unplanned
Last Updated: 12 Apr 2022 09:07 by Davide

X-Axis labels are overlapped when new data points are constantly added. 

on Android, the axis labels are replaced.

There is an inconsistency in the behavior on Android and iOS. 

Workaround: 

apply ChartPanAndZoomBehavior and set 
PanMode to "Horizontal"
ZoomMode to "Horizontal"

And chart Zoom to "2,1"

<telerikChart:RadCartesianChart PaletteName="Light"
                                Zoom="2, 1">
    <telerikChart:RadCartesianChart.BindingContext>
        <local:ViewModel/>
    </telerikChart:RadCartesianChart.BindingContext>
    <telerikChart:RadCartesianChart.HorizontalAxis>
        <telerikChart:DateTimeContinuousAxis LabelFitMode="Rotate"
                                             MajorStepUnit="Day"
                                             PlotMode="OnTicks"
                                             LabelFormat="dd MMM"
                                             MajorStep="20"
                                             ShowLabels="True"/>
    </telerikChart:RadCartesianChart.HorizontalAxis>
    <telerikChart:RadCartesianChart.VerticalAxis>
        <telerikChart:NumericalAxis />
    </telerikChart:RadCartesianChart.VerticalAxis>
    <telerikChart:RadCartesianChart.Series>
        <telerikChart:LineSeries ValueBinding="Value"
                                 CategoryBinding="Date"
                                 DisplayName="Sales"
                                 ItemsSource="{Binding Data}"/>
    </telerikChart:RadCartesianChart.Series>
    <telerikChart:RadCartesianChart.ChartBehaviors>
        <telerikChart:ChartPanAndZoomBehavior ZoomMode="Horizontal" 
                                              PanMode="Horizontal" 
                                              HandleDoubleTap="True"/>
    </telerikChart:RadCartesianChart.ChartBehaviors>
</telerikChart:RadCartesianChart>

Unplanned
Last Updated: 16 Feb 2022 12:28 by Kelsey
While using the trackball feature some axis labels are disappearing. While trackball is activated with tap and hold, dragging down makes the bottom label on the y-axis disappear and dragging left makes the first label on the x-axis disappear.
Unplanned
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



Unplanned
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.
Unplanned
Last Updated: 07 Dec 2021 11:09 by ADMIN
Created by: Narsimha
Comments: 0
Category: Chart
Type: Bug Report
0

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

Android:

UWP:

Unplanned
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:RadCartesianChart.ChartBehaviors>
                <telerik:ChartPanAndZoomBehavior PanMode="Vertical"
                                                 ZoomMode="Both" />
            </telerik:RadCartesianChart.ChartBehaviors>
            <telerik:RadCartesianChart.VerticalAxis>
                <telerik:CategoricalAxis />
            </telerik:RadCartesianChart.VerticalAxis>
                <telerik:RadCartesianChart.HorizontalAxis>
                    <telerik:NumericalAxis Minimum="0"
                                       ShowLabels="True"
                                       LabelFormat="N0">
                    </telerik:NumericalAxis>
                </telerik:RadCartesianChart.HorizontalAxis>
                <telerik:RadCartesianChart.Series>
                <telerik:BarSeries CategoryBinding="Category"
                                        ValueBinding="Value" 
                                        ItemsSource="{Binding Data}" />
            </telerik:RadCartesianChart.Series>

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

Unplanned
Last Updated: 05 Oct 2021 08:56 by ADMIN
Created by: Ajaysinh
Comments: 2
Category: Chart
Type: Bug Report
1
Hello, 

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.

Steps:
1. Bind series data after delay.

For more details please refer attached files.

I look forward to your reply!

Regards,
Ajay Dodiya | Sr. Xamarin Developer
Unplanned
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.
Unplanned
Last Updated: 06 Sep 2021 08:37 by ADMIN
Fill color is not working in AreaSeries when negative values are given on iOS 12.
Unplanned
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.
Unplanned
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">
    <telerikChart:RadCartesianChart.BindingContext>
        <local:ViewModel />
    </telerikChart:RadCartesianChart.BindingContext>
    <telerikChart:RadCartesianChart.HorizontalAxis>
        <telerikChart:DateTimeContinuousAxis LabelFitMode="Rotate" 
                                                x:Name="horizontal"/>
    </telerikChart:RadCartesianChart.HorizontalAxis>
    <telerikChart:RadCartesianChart.VerticalAxis>
        <telerikChart:NumericalAxis />
    </telerikChart:RadCartesianChart.VerticalAxis>
    <telerikChart:RadCartesianChart.Series>            
        <telerikChart:SplineSeries ValueBinding="Value"
                                    CategoryBinding="Date"
                                    ItemsSource="{Binding Data}"
                                    ShowLabels="True"
                                    />
    </telerikChart:RadCartesianChart.Series>
    <telerikChart:RadCartesianChart.Annotations>
        <telerikChart:CartesianGridLineAnnotation Stroke="#0E72F6" 
                                                StrokeThickness="2"
                                                Value="{Binding Threshold}"
                                                Axis="{x:Reference horizontal}">
            <telerikChart:CartesianGridLineAnnotation.DashArray>
                <x:Array Type="{x:Type x:Double}">
                    <x:Double>4.0</x:Double>
                    <x:Double>2.0</x:Double>
                </x:Array>
            </telerikChart:CartesianGridLineAnnotation.DashArray>
        </telerikChart:CartesianGridLineAnnotation>
    </telerikChart:RadCartesianChart.Annotations>
</telerikChart:RadCartesianChart>  


Workaround: 
Use CategoricalAxis.

Unplanned
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.
Unplanned
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.
Unplanned
Last Updated: 07 Apr 2021 06:37 by Stefan
Applying ChartTrackBallBehavior to a CartesianChart with ScatterLine/ScatterPoint series does not take any effect.
Unplanned
Last Updated: 03 Mar 2021 09:27 by ADMIN
Support the ability to apply palette (separate color) per point for a line series.
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