I am wondering how scrolling for Shield UI Chart works? There is zoomMode, but how does one enable it?
By default zooming for Shield UI Chart works is disabled. Enabling it is done by actually setting the zoomMode property. In other words- no additional enabling is necessary, once the mode has been specified. This can be done by choosing one of the 3 available modes: 'x', 'y', and 'xy'. You can try this- zoomMode: 'xy',- it makes the chart zoom in both by the X and Y axis.
It is worth noticing, that instead of the mouse button, the mouse wheel is used to zoom in and out.