Re: [Plplot-devel] Colorbar support

[Andrew R. <and...@us...>]

On Thu, Oct 25, 2012 at 05:26:25PM -0400, Hezekiah M. Carty wrote:
> On Thu, Oct 25, 2012 at 5:11 PM, Andrew Ross
> >
> > OK. I think I've found the reason. I'd tested with the xwin and psc
> > drivers. In both these cases the background colour for the colorbar
> > boxes are black. This masks the black high caps. Trying with other
> > drivers (e.g. qtwidget) and everything is fine. So the problem is
> > with how the background colour of the colorbar box is assigned. This
> > seems to be driver dependent in a non-obvious way.
> >
> > Andrew
> 
> Andrew,
> 
> The background color in example 33 is transparent.  The xwin and psc
> drivers don't support transparency while the Cairo and Qt devices do.
> I expect that is where the problem is coming from.
> 
> Hez

Hez,

That sounds likely. I'll see if I can find a way of setting up the
example so that it still works ok even with drivers which don't
support transparent backgrounds. Probably choosing a colourscale which
doesn't use black would solve the problem.

Thanks

Andrew