Chart Expander

[Thanh Tomas Dang]

Hello,

I'd like to implement an "expander" feature - e.g. Selection zooming that would display the zoomed area in a separate window/chart.

From the top of my head, I'm assuming that I could bind the mouse events on the chart to create a selection rectangle, get the data points, and push them into a new series in a separate chart. Would this be the way to go, or is there any better solution?

Thank you,

T.D.

PS: I realize I created 2 posts with 2 separate issues, but I did not want to group them into one to stay on topic. If I should not have done this, I apologize.

[Devi Aruna Maharasi Murugan]

Hi Thanh, 

  

Thanks for contacting Syncfusion Support. 

  

We can achieve your requirement with SelectionZoomingEnd event of SfChart. We have prepared a demo sample based on requirement and it can be downloaded from below link, 

  

Sample: ZoomingChart 

  

Please refer our UG documentation link to know more about SelectionZoomingEnd event, 

  

Link: https://help.syncfusion.com/wpf/sfchart/area#chart-events 

  

Regards, 

Devi 

[Thanh Tomas Dang]

Hello Devi,

thank you for the solution and the example! I'd like to ask - is it possible to "consume" the zooming event on the original chart? I'd like to zoom the newly opened chart only and leave the original as it is.

Thank you,

Thanh

[Thanh Tomas Dang]

To add to my last post: I've realized you can "remove" the zoom factor and position by setting those to 1/0, so I can reset the zooming like that.

A quite different question though: Am I able to draw an annotation in the same position as the ZoomRect of the SelectionZoomEndEventArgs? I've tried converting the various properties of the ZoomRect using Primary/Seconday axis CoefficientToValue/ValueToCoefficient, but none seem to give me the desired numbers.

The documentation also mentions using the actual chart's PointToValue method, but I cannot access that right now due to using MVVM bindings - is there an easy way of doing that?

Thank you again,

Thanh 

[Devi Aruna Maharasi Murugan]

Hi Thanh, 

  

Thanks for your update. 

  

We are able to draw annotation in zoom rect position by calculating the point with PointToValue method of chart. We have prepared a demo sample based on your requirement and it can be downloaded from below link, 

  

Sample: ZoomingChartModified 

  

Regards, 

Devi 

[Thanh Tomas Dang]

Hi Devi,

thank you, this is what I needed!

Thanh

[Devi Aruna Maharasi Murugan]

Hi Thanh, 

  

Thanks for your update. 

  

Please contact us, if you need any further assistance. 

  

Regards, 

Devi