Hello Santhosh,

In order to apply format to the labels from the second vertical axes, you can directly set the LabelFormat property to the axes in the custom renderer. 

Example:

 Com.Telerik.Widget.Chart.Visualization.CartesianChart.Axes.LinearAxis verticalAxisBar = new Com.Telerik.Widget.Chart.Visualization.CartesianChart.Axes.LinearAxis();
                verticalAxisBar.HorizontalLocation = Com.Telerik.Widget.Chart.Engine.Axes.Common.AxisHorizontalLocation.Right;
// set label format to the vertical axes
verticalAxisBar.LabelFormat = "";

I would like to ask you to open a support ticket/forum thread for future questions you may have. Please note that this public feedback item is a feature request about providing support for Multiple Axes. It is not related to the axes labels and label formats. 

Regards,
Didi
Progress Telerik

Hello Santhosh,

Indeed, the kb article shows the general approach. Other than that, if you have concrete charts that need a secondary axis, you can create a custom class that inherits from RadCartesianChart and use it as a target type in the renderer:

 public class MultipleAxesChart : RadCartesianChart
 { 
  

the XAML definition should be:

<local:MultipleAxesChart Margin="0, 20, 0, 0">

	<telerikChart:RadCartesianChart.BindingContext>
		<local:ViewModel/>
	</telerikChart:RadCartesianChart.BindingContext>

	<telerikChart:RadCartesianChart.HorizontalAxis>
		<telerikChart:CategoricalAxis/>
	</telerikChart:RadCartesianChart.HorizontalAxis>
	
	.....
</local:MultipleAxesChart>

And then use the class in the renderer:

[assembly: ExportRenderer(typeof(MultipleAxesChart), typeof(CustomChartRenderer))]

In this way the renderer will not be applied to all Charts in the app.

Another approach is in the renderer inside OnElementChanged event to check the series data  - through the this.Control references you have access to the series and the axes of the chart.

Please try these and let me know if you have any additional questions or concerns.

Regards,
Yana
Progress Telerik

Hello,

Each custom renderer class is decorated with an ExportRenderer attribute that registers the renderer with Xamarin.Forms. The attribute takes two parameters – the type name of the control being rendered(in your case the (Telerik.XamarinForms.Chart.RadCartesianChart ), and the type name of the custom renderer

[assembly: ExportRenderer (typeof(Telerik.XamarinForms.Chart.RadCartesianChart), typeof(ChartAxis.Droid.CustomChartRenderer))]
namespace CustomChartRenderer.Droid
{
    public class CustomChartRenderer : CartesianChartRenderer

for example, the CustomChartRenderer class is created inside the ChartAxis.Droid project. 

For more details about custom renderer and export renderer attribute, please check the following link from the Microsoft documentation https://docs.microsoft.com/en-us/xamarin/xamarin-forms/app-fundamentals/custom-renderer/introduction#creating-a-custom-renderer-class 

I hope the provided information was helpful.

For the example

Regards,
Didi
Progress Telerik

Hi Santosh,

Thank you for your feedback.

I can assure you that we are keeping an eye on this item and track its demand. Please follow and vote for it in order to receive an email notification when there is an update. 

Solution:

We have a how-to article in our documentation that describes how to achieve this scenario using a custom renderer. Please check this link https://docs.telerik.com/devtools/xamarin/knowledge-base/chart-xamarin-multiple-axis 

Regards,
Didi
Progress Telerik

Hi Craig.

Thank you for sending your comment.  We have this feature request in mind and as you're following the item, you will receive an email notification as soon as there is a status change.

Hi CT, 

Thank you sending your comment. We're keeping an eye on this item and if there's demand, we'll schedule it for some of the upcoming releases.

Hi Naveen,

Thank you for your comment.  At this point multiple axes feature is yet not planned for implementation. As you're following the item, you will be notified on any status changes.