Hi Carmen,
Thank you for your question.
The Chart has a ChartPanZoomBehaviorwhich allows you to zoom and or pan across the chart data if it is too big to fit. Additionally the chart has a setZoom method which allows you to programmatically zoom to a certain level. Here's an example:
Here the horizontal zoom is set to 5, since given that you want to display 20 out of 100 points. Depending on you requirements, you can set the zoom mode to none, if you don't want to allow users' zoom by gestures. Additionally to pan to the end on the initial load, you can use setPanOffset:
I hope this information helps.
Regards,
Todor
Telerik
Thank you for your question.
The Chart has a ChartPanZoomBehaviorwhich allows you to zoom and or pan across the chart data if it is too big to fit. Additionally the chart has a setZoom method which allows you to programmatically zoom to a certain level. Here's an example:
ChartPanAndZoomBehavior panAndZoomBehavior = new ChartPanAndZoomBehavior();panAndZoomBehavior.setZoomMode(ChartPanZoomMode.HORIZONTAL);panAndZoomBehavior.setPanMode(ChartPanZoomMode.HORIZONTAL);chart.getBehaviors().add(panAndZoomBehavior);chart.setZoom(5,1);Here the horizontal zoom is set to 5, since given that you want to display 20 out of 100 points. Depending on you requirements, you can set the zoom mode to none, if you don't want to allow users' zoom by gestures. Additionally to pan to the end on the initial load, you can use setPanOffset:
chart.addOnLayoutChangeListener(new View.OnLayoutChangeListener() { @Override public void onLayoutChange(View v, int left, int top, int right, int bottom, int oldLeft, int oldTop, int oldRight, int oldBottom) { chart.setPanOffset(-chart.getZoomWidth() * chart.getWidth(), 0); }});I hope this information helps.
Regards,
Todor
Telerik
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