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Unplanned
Last Updated: 01 Jun 2023 07:56 by HV
Chart: [Xamarin.Android] LabelTextColor does not apply on Axis
Created by: HV
Comments: 0
Category: Chart
Type: Bug Report
0
Chart: [Xamarin.Android] LabelTextColor does not apply on Axis

When setting LabelTextColor, it does not apply to the chart axis

verticalAxis.LabelTextColor = Android.Graphics.Color.Red;

horizontalAxis.LineColor = Android.Graphics.Color.Red;
Unplanned
Last Updated: 28 Mar 2023 08:27 by James
Chart: [UWP] Resetting the zoom does not work every time
Created by: James
Comments: 0
Category: Chart
Type: Bug Report
3
Chart: [UWP] Resetting the zoom does not work every time

When having the following code on a button click 

private void Button_Clicked(object sender, System.EventArgs e)
{
       this.chart.Zoom = new Size();
}

The chart zoom is reset first time, but when zooming again and pressing the button, the zoom level does not reset. You have to pan the chart, then zoom reset works. 

This code resets the zoom:

private void OnResetZoomClicked(object sender, EventArgs e)
{
	this.chart.Zoom = new Size(1, 1); // This line is added as a workaround to reset the Zoom level
	this.chart.Zoom = new Size();
}

 

 

Unplanned
Last Updated: 16 Jan 2023 11:53 by ADMIN
Chart: [iOS] ScatterLineSeries becomes zig zag when zoom behavior is applied
Created by: Mayank
Comments: 2
Category: Chart
Type: Bug Report
0
Chart: [iOS] ScatterLineSeries becomes zig zag when zoom behavior is applied
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
Chart: Add Range Bar and Area Series
Created by: Matthew
Comments: 0
Category: Chart
Type: Feature Request
0
Chart: Add Range Bar and Area Series
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
allow to configure tooltip template for charts
Created by: nirbhay
Comments: 1
Category: Chart
Type: Feature Request
0
allow to configure tooltip template for charts
Currently there is no way to configure chart tooltip via xaml
Unplanned
Last Updated: 02 Sep 2022 08:17 by paul
Pie Chart: [Xamarin.Android] Exception when changing the visibility of the parent layout where the chart is placed
Created by: paul
Comments: 0
Category: Chart
Type: Bug Report
0
Pie Chart: [Xamarin.Android] Exception when changing the visibility of the parent layout where the chart is placed
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
Chart: [iOS] TKChartViewAnnotation displays outside of axes while panning or zooming on the chart
Created by: Kelsey
Comments: 0
Category: Chart
Type: Bug Report
0
Chart: [iOS] TKChartViewAnnotation displays outside of axes while panning or zooming on the chart
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
Chart: [iOS] X axis labels are overlapped when data points are constantly added
Created by: Davide
Comments: 0
Category: Chart
Type: Bug Report
1
Chart: [iOS] X axis labels are overlapped when data points are constantly added

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
Chart: [iOS] When trackball is shown and dragged, some axis labels disappear
Created by: Kelsey
Comments: 0
Category: Chart
Type: Bug Report
1
Chart: [iOS] When trackball is shown and dragged, some axis labels disappear
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
Chart: Cross the horizontal and vertical axis on specific position of the vertical axis
Created by: VPS
Comments: 0
Category: Chart
Type: Feature Request
1
Chart: Cross the horizontal and vertical axis on specific position of the vertical axis
 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
Chart: [Android] Java.Lang.IndexOutOfBoundsException is raised when data is frequently refreshed
Created by: Sean
Comments: 0
Category: Chart
Type: Bug Report
1
Chart: [Android] Java.Lang.IndexOutOfBoundsException is raised when data is frequently refreshed
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
Chart: [UWP] Inconsistency in null values rendering
Created by: Narsimha
Comments: 0
Category: Chart
Type: Bug Report
0
Chart: [UWP] Inconsistency in null values rendering

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
Chart: [iOS] Horizontal Bar Series disappear when applying zoom and pan
Created by: Simeon
Comments: 0
Category: Chart
Type: Bug Report
0
Chart: [iOS] Horizontal Bar Series disappear when applying zoom and pan

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
Multi Axes chart with Delay Xamarin iOS
Created by: Ajaysinh
Comments: 2
Category: Chart
Type: Bug Report
1
Multi Axes chart with Delay Xamarin iOS
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
Chart: [Android] Tooltips remain in wrong location when the device is rotated
Created by: Aaron
Comments: 0
Category: Chart
Type: Bug Report
6
Chart: [Android] Tooltips remain in wrong location when the device is rotated
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
Chart: [iOS] Fill color is not applied in AreaSeries with negative values
Created by: Sasi
Comments: 0
Category: Chart
Type: Bug Report
0
Chart: [iOS] Fill color is not applied in AreaSeries with negative values
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
Chart: [iOS] Any customizations made in the custom renderer are reset when Chart series are updated.
Created by: Nicholas
Comments: 1
Category: Chart
Type: Bug Report
1
Chart: [iOS] Any customizations made in the custom renderer are reset when Chart series are updated.
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
Chart: [iOS] GridLine Annotation for DateTime Axis is not visualized
Created by: Kristen
Comments: 4
Category: Chart
Type: Bug Report
4
Chart: [iOS] GridLine Annotation for DateTime Axis is not visualized

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
Chart: Provide consistency across platforms when the Chart is panned and the data is updated.
Created by: Kristen
Comments: 0
Category: Chart
Type: Feature Request
0
Chart: Provide consistency across platforms when the Chart is panned and the data is updated.
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
Chart: The tooltip is not hidden when the chart data is updated from code-behind
Created by: Kristen
Comments: 0
Category: Chart
Type: Bug Report
0
Chart: The tooltip is not hidden when the chart data is updated from code-behind
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.
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