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How to programmatically pan a ColumnSeries bar chart

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117652 Nov 24,2014 07:33 AM Nov 25,2014 08:05 AM WinRT 1
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Tags: SfChart
Mark Riley
Asked On November 24, 2014 07:33 AM

I have a bar chart with a Numerical y-axis and a Category x-axis.

Due to the large number of categories on the x-axis, I had to implement scrolling using the following behaviour:

<chart:SfChart.Behaviors>
       <chart:ChartZoomPanBehavior EnablePanning="True"/>
</chart:SfChart.Behaviors>

and also setting the 'ZoomFactor' on the CategoryAxis appropriately.

This works great, and you can scroll along with the mouse or by touch. However I also need to scroll the chart programmatically. So for example if I have a ZoomFactor of 0.5, I can see the first 50% of the bars. I want to then programmatically show the second 50% of the bars (i.e. without using the mouse or touch).

I can't see how to do this, so any help would be appreciated.

Magesh Kumar Krishnan [Syncfusion]
Replied On November 25, 2014 08:05 AM

Hi Mark,

Thanks for using Syncfusion products.

 

SfChart provides the API called ZoomPosition for panning, we can use this property for programmatic panning requirement. It takes the values from 0 to 1. You can define the ZoomPosition property as in below code snippet.

 

Code snippet:

 

<chart:CategoryAxis Name="primaryAxis" EnableScrollBar="False" ZoomFactor="0.3" ZoomPosition="0.5" FontSize="20">

  </chart:CategoryAxis>

 

Please refer the link given below.

Link : http://help.syncfusion.com/ug/wpf/default.htm#!documents/zoomingandpanning.htm

 

We have prepared sample based on your requirement . please find the sample in the attachment.

Please let us know if you have any queries .

 

Thanks,

Magesh Kumar K


Attachment: ZoomPosition_af7f114a.zip

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