Re: [Plplot-general] PS Driver for Image Plots

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

On Wed, Nov 17, 2004 at 08:21:44AM -0800, Alan Irwin wrote:
> On 2004-11-17 10:07-0000 Andrew Ross wrote:
> 
> >On Tue, Nov 16, 2004 at 11:20:03PM -0800, Alan Irwin wrote:
> >>Antialiasing must be off in
> >>the postscript viewer (e.g., gv) to get good looking plots on the screen. 
> >>Is
> >>that the problem you refer to here? Try turning antialiasing off in the
> >>postscript viewer to see whether the problem you are referring to goes 
> >>away.
> >
> >I've observed this as a rendering issue with the viewer rather than a
> >plplot problem. Reloading or refreshing the view (by pressing `a' in gv)
> >usually fixes it for me. I have seen similar problems with plots from
> >gnuplot and fixed them the same way. In my experience antialiasing makes
> >no difference to this issue of lines across the plot.
> 
> Hmmm...  I had never heard of that "a" command before, but here is what the
> gv man page states:
> 
>               A            Toggle antialiasing on and off
> 
> Sure enough, when I tried it on the example 16 postscript file result,
> antialiasing (along with the artifacts) toggles on and off. So this really
> is an antialiased rendering issue with this postscript viewer.

OK. So I should have read the man page... It's a quick way to fix the
problem though since gv seems to default to antialiasing on my system
and for a lot of things (but not plplot) that's what I want.

Andrew