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Unplanned
Last Updated: 06 Dec 2023 15:42 by ADMIN
ADMIN
Chart: [iOS] DateTimeContinuousAxis displays incorrect labels when MajorStepUnit is Month
Created by: Ves
Comments: 2
Category: Chart
Type: Bug Report
1
Chart: [iOS] DateTimeContinuousAxis displays incorrect labels when MajorStepUnit is Month 
DateTimeContinuousAxis displays incorrect labels when MajorStepUnit is Month. There are two labels for some months with 31 days.
Unplanned
Last Updated: 11 Oct 2023 10:30 by Davide
Chart: [Android] Cannot load LineSeries with 11500 points
Created by: Davide
Comments: 0
Category: Chart
Type: Bug Report
1
Chart: [Android] Cannot load LineSeries with 11500 points
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.
Unplanned
Last Updated: 30 Aug 2023 08:32 by Davide
Chart: [iOS] Series cannot be scrolled when data is added dynamically and chart is zoomed
Created by: Davide
Comments: 0
Category: Chart
Type: Bug Report
1
Chart: [iOS] Series cannot be scrolled when data is added dynamically and chart is zoomed

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.

Unplanned
Last Updated: 02 Aug 2023 15:27 by Dennis
Chart: [iOS] When the first series has null value, other bar series are not rendered correctly
Created by: Dennis
Comments: 0
Category: Chart
Type: Bug Report
0
Chart: [iOS] When the first series has null value, other bar series are not rendered correctly
On iOS is whenever the first series  ItemSource has a null value, the other series are not plotted correctly in the graph. 
Unplanned
Last Updated: 02 Aug 2023 15:13 by Dennis
Chart: [iOS] Some points in stacked bar series are rendered behind another bar series
Created by: Dennis
Comments: 0
Category: Chart
Type: Bug Report
0
Chart: [iOS] Some points in stacked bar series are rendered behind another bar series

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

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: 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
2
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: 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.

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