Last Updated: 06 Dec 2023 15:42 by ADMIN
DateTimeContinuousAxis displays incorrect labels when MajorStepUnit is Month. There are two labels for some months with 31 days.
Last Updated: 11 Oct 2023 10:30 by Davide
I am trying to show two LineSeries with 11500 points in each and the chart cannot load at all. The wait time seems to be infinite. I noticed that the chart loads in about 5 seconds when there 5 thousand points, and in about 10 seconds when there are 10 thousand points.
Last Updated: 30 Aug 2023 08:32 by Davide

When you zoom in on the graph, it always zooms to the center of the dataset. Even if I try to move, manually, horizontally the graph I lose the position when a point is added.

When point is added and chart is zoomed, cannot scroll to see other data, the chart reset the data visualization from the beginning.

Last Updated: 02 Aug 2023 15:27 by Dennis
On iOS is whenever the first series  ItemSource has a null value, the other series are not plotted correctly in the graph. 
Last Updated: 02 Aug 2023 15:13 by Dennis

When having many stack bar series in one chart, some data points are rendered behind another data points. Check the attached image: how it looks on android and on iOS

Last Updated: 01 Jun 2023 07:56 by HV

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

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

horizontalAxis.LineColor = Android.Graphics.Color.Red;
Last Updated: 28 Mar 2023 08:27 by James

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();



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.
Last Updated: 18 Nov 2022 17:13 by Matthew
Created by: Matthew
Comments: 0
Category: Chart
Type: Feature Request
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. 
Last Updated: 06 Oct 2022 05:05 by ADMIN
Created by: nirbhay
Comments: 1
Category: Chart
Type: Feature Request
Currently there is no way to configure chart tooltip via xaml
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'

Remove the ShowLabels from Pie Series.
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.
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. 


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

And chart Zoom to "2,1"

<telerikChart:RadCartesianChart PaletteName="Light"
                                Zoom="2, 1">
        <telerikChart:DateTimeContinuousAxis LabelFitMode="Rotate"
                                             LabelFormat="dd MMM"
        <telerikChart:NumericalAxis />
        <telerikChart:LineSeries ValueBinding="Value"
                                 ItemsSource="{Binding Data}"/>
        <telerikChart:ChartPanAndZoomBehavior ZoomMode="Horizontal" 

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.
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.
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