get plot x data from a waveform

[ElectroLund]

I'm trying to extract data arrays from a graph control that has been plotted with PlotWaveform.  

This discussion is very similar in principle to what I'm trying to do. So doing a...

GetPlotAttribute(panel, graph, plot, ATTR_PLOT_YDATA, data);

works well.  But the same for XDATA throws a -123, since this attribute isn't valid.

So I can deduce the data if I could get the xIncrement attribute from when this data was plotted.  But I don't see any such attribute anywhere.

[RobertoBozzolo · Accepted solution]

At present I can only think to derive it by getting axis max-min divided by plot number of points

[ElectroLund]

Oh of course!  That works nicely, thanks.