Re: Interactions between datasets on a single plot?

> 	 The most common problem shows up as the plot for one dataset going
> away when I add a second dataset to the plot and then do a
> canvas_paint() to get everything on the screen.  I know this isn't much
> to go on yet, but it's all I've got at this point.  One dataset is fine,
> when I add the second and call canvas_paint() the first one will
> sometimes disappear.

If I recall correctly, adding a dataset to a plot performs only a shallow
copy, so it's up to the application to ensure that the plot data persists
as long as it's needed.   Given the non-determinism of the disappearing
(i.e. sometimes, but not always) this may be a place to start looking
for the problem ... e.g., are you accidently freeing the first dataset
somewhere?

HTH,
Mike


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