Question

There is a strange behavior ar may be even bug in highcharts. If I change series data while chart is zoomed, I can’t zoom it anymore:(((

Here are steps to reproduce

1. Goto http://jsfiddle.net/CXKmD/2/
2. Zoom chart using mouse
3. Click “Change” button to change chart’s data
4. Try to zoom again using mouse

The problem is that after these steps event.xAxis is undefined, so we can’t get min/max values of mouse zoom selection.

Are there any workarounds to let chart change it’s data in zoomed state and then zoom it even further?

Answer 1

Not a bug
You are unnecessarily converting the timestamps to date objects, whereas the setExteremeMethod expects timestamps, while now you are passing it a date. Changed your code to this and it worked

if (event.xAxis[0]) {
    startDt = event.xAxis[0].min;
    endDt = event.xAxis[0].max;
}

fiddle @ http://jsfiddle.net/jugal/tdkwy/