Update canvasWidth value

[baudouinpaul]

When trying to update chart width depending on window's width, the chart did'nt update as I would expect. The complete chart initialisation has to be called in order to update canvasWidth.
As exemple, it is possible to do this work with centralLabel. I would like to do the same with canvasWidth.

[CascadiaIO]

I came across this same issue. I can see that the value for canvasWidth variable changes on the page, but it doesn't update the chart.

NeedleValue/centralLabel/etc all work great, though.