Chart zoom x and y independently

[Martin Dusek]

Hello,

I want to zoom x and y axis of the chart independently in Xamarin.Android chart. I.e. when I swipe 0 degree only x axis is zoomed, when I swipe 45 degree x and y axis are zoomed equally, when I swipe 90 degree only y axis is zoomed, etc.

If not, is it possible to switch between ZoomModeX (swiping 0 up to 45 degree) and ZoomModeY (swiping 45 degree up to 90 degree)?

Thank you

Martin

[Parthiban Sundaram]

Hi Martin, 

  

Thanks for the Syncfusion products. 

  

We have achieved this requirement by using the SetOnTouchListener method of SfChart. Please find the sample and code snippet from following location. 

 

Code Snippet: 

 

        

 public bool OnTouch(View v, MotionEvent e) 

        { 

            if (e.PointerCount == 2) 

            { 

                int pointer1Index = e.FindPointerIndex(0); 

                int pointer2Index = e.FindPointerIndex(1); 

 

                float x1 = e.GetX(pointer1Index); 

                float y1 = e.GetY(pointer1Index); 

 

                float x2 = e.GetX(pointer2Index); 

                float y2 = e.GetY(pointer2Index); 

 

                if (Math.Abs(x1 - x2) > Math.Abs(y1 - y2)) 

                { 

                    zoomPan.ZoomMode = ZoomMode.X; 

                } 

 

                else if (Math.Abs(y1 - y2) > Math.Abs(x1 - x2)) 

                { 

                    zoomPan.ZoomMode = ZoomMode.Y; 

                } 

            } 

            return base.OnTouchEvent(e); 

        } 

 

 

Sample: http://www.syncfusion.com/downloads/support/forum/132146/ze/ChartZoom-602123989  

  

Please let us know, if you need further assistance on this.  

  

Regards,
Parthiban S