Is it possible to have a viewport to control three XYcharts added to multichart? If so, would I set the viewport to the multichart or the viewport to the three XYcharts? And if it is not too much ask can you provide sample code.
Basically, if one of the axes is aligned for the 3 charts, you can zoom/scroll in that axis direction. In the above example, the x-axes are aligned, so we can zoom/scroll in the x direction. (Align means the the 3 axes start and end at the same x-pixel coordinates, such as if the charts are stacked up. The 3 axes can have different scales.)
You can remove the realtime part of the code, and add a viewport control under the chart. When the viewport is changed, all 3 XYCharts will update.
If you need further information, please inform me how your 3 charts are arrange in the multi-chart.