| Re: EPS to PDF contour plots [message #75698 is a reply to message #75568] |
Mon, 04 April 2011 13:01   |
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Matt[3]
Messages: 23
Registered: April 2011
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Junior Member |
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On Apr 4, 2:59 pm, David Fanning <n...@idlcoyote.com> wrote:
> Kenneth P. Bowman writes:
>> These are rendering artifacts from converting the PS/PDF to a
>> bitmap to display it on the screen. They are a result of the
>> PS being comprised of a number of individual polygons.
>> If you zoom into the PDF, you will see that the artifacts are
>> resolution dependent.
>
> I agree they look *exactly* like rendering artifacts,
> but I see no evidence the artifacts are resolution dependent.
> No matter what resolution I use on that PDF file, the artifacts
> are still there. :-(
>
Hi Guys,
Maybe I misunderstood David's previous post... You want to see what
comes up in a plotting window? I'd never actually done that before
for this plot, since I almost always plot straight to PS. Anyway,
here's a screen-shot of what comes up just with ps_start commented
out: http://dl.dropbox.com/u/13779929/IDL_screen_shot.png. Clearly
some issues with the background color that I need to think about, but
otherwise it's stripe-less. Also, if I use /fill, rather than /
cell_fill, the plots look fine where there aren't missing values. I'm
certain it's not something in the data.
I've just given Ken's routines a try and it looks like they might
solve the problem! I'll need to play around with it a bit to get a
better feel for it.
It does seem like a shame not to use contour for this. As Ken says,
it's much simpler!
Cheers,
Matt
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