| Re: best image plotting routine [message #66463 is a reply to message #66462] |
Fri, 08 May 2009 02:37  |
liamgumley
Messages: 74
Registered: June 2005
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Member |
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On May 8, 1:39 pm, "R.G. Stockwell" <noemai...@please.com> wrote:
> I often use a simple contour command (with /fill) to plot an image,
> however that is not practical for very large images with NANs in it.
> One must use /cell, and that takes forever to render, and creates
> 120mb postscript files.
>
> what is the best routine to use to create this plot of an image?
> Note there are 2 requirements.
>
> 1) it must accept "all" graphics keywords.
> - i use xtickformat to print julian days for instance, ytickv, ytickname,
> log axis, etc
>
> 2) it must create scalable and small postscript files
> - a bitmap into a postscript is not acceptable. the quality
> is too low for publication.
[stuff deleted]
Download the PIP sample programs from
http://gumley.com/PIP/Sample_Programs/PIP_programs.zip
and try the following. First, create the plot onscreen:
data = dist(32)
imdisp, data, /axis, title='IMDISP TEST', $
xtitle='X AXIS', xtickformat='(f6.1)', $
/ylog, yrange=[0.1, 1000.0]
then switch to Postscript and redo the image
pson
device, /helvetica
imdisp, data, /axis, title='IMDISP TEST', $
xtitle='X AXIS', xtickformat='(f6.1)', $
/ylog, yrange=[0.1, 1000.0], font=0
psoff
Note the font=0 keyword to use the device font. If you are using a Mac
as previously discussed here, you might want to do something like this
first:
data = rebin(data, 1024, 1024, /sample)
Does the resulting PostScript file meet your needs?
Liam.
Practical IDL Programming
http://www.gumley.com/
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