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Re: Antialiasing Moire-style artefacts in pm3d maps

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Subject	Re: Antialiasing Moire-style artefacts in pm3d maps
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Il giorno giovedì 3 marzo 2011 00:16:17 UTC+1, James S ha scritto:
> I'm using the epslatex terminal to make a pm3d map to go in a latex
> document.  The following is a simplified example:
> 
> set terminal epslatex
> set pm3d map
> set output "test.tex"
> set xrange [-1:1]
> set yrange [-1:1]
> set cbrange [0:2]
> splot x+y
> 
> The resulting eps displays perfectly on a variety of viewing
> software.  However, if I either convert this into a pdf using
> epstopdf, or directly use the pdf terminal, some viewers have issues
> with anti-aliasing, producing white lines in between the
> quadrilaterals in something like a Moire pattern.  In the above
> example, evince shows this effect; acroread doesn't, but it does in
> more complicated cases unless anti-aliasing is turned off.
> 
> The only way I have found to consistently address this problem is to
> use 'set pm3d map at bst', but I have no idea why that should make any
> difference (not that I know anything about the inner workings of
> gnuplot or eps or pdf files).  Using just one or two of b, s, and t
> doesn't seem to work.  Of course, this isn't ideal due to the big
> increase in file size, so does anyone know of another workaround?
> 
> I noticed there were a few posts on similar effects in pm3d a few
> years back, but I haven't seen anyone mention the effect of 'at bst',
> or that this happens in the pdf terminal as well as in postscript.
> 
> (I'm on linux, and I have tried version 4.4.0 and the latest CVS
> version)

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Re: Antialiasing Moire-style artefacts in pm3d maps maltese.gio@gmail.com - 2018-07-29 08:44 -0700

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