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Re: Write graphics to two devices simultaneously? [message #66059 is a reply to message #66057]

Sun, 12 April 2009 08:51

Jeremy Bailin
Messages: 618
Registered: April 2008

Senior Member

On Apr 11, 11:08 am, David Fanning <n...@dfanning.com> wrote:
> stefan5...@hotmail.com writes:
>> Is there any way to print to an X11 window and simultaneously dump the
>> X11 output to a postscript file?
>
>> Of course, I could just copy paste the plot information for a new
>> device, but it would make the procedure annoyingly long. Is there a
>> command to take the contents of an X11 device and save it to the
>> postscript device, or a command to write to postscript at the same
>> time as X11?
>
> It is not possible to write to two graphics devices at
> the same time. But, well-written IDL graphics programs
> don't much care what device they are being written to,
> which allows you to use something like PS_START/PS_END
> to write them to PostScript files simply:
>
> Consider displaying a histogram of an image, using HISTOPLOT:
>
> ; An image.
> image = LoadData(7)
>
> ; Write to display.
> Histoplot, image, /FILL, POLYCOLOR='rose'
>
> ; Write to PostScript file.
> PS_START
> Histoplot, image, /FILL, POLYCOLOR='rose'
> PS_END
>
> Such commands work on Windows, LINUX, and Macintosh computers,
> and for Z-buffer and PRINTER devices, etc.
>
> Programs to help with this are found in the Coyote Library:
>
> http://www.dfanning.com/programs/coyoteprograms.zip
>
> Cheers,
>
> David
> --
> David Fanning, Ph.D.
> Fanning Software Consulting, Inc.
> Coyote's Guide to IDL Programming:http://www.dfanning.com/
> Sepore ma de ni thui. ("Perhaps thou speakest truth.")

For cases like that, I tend to stick the entire thing into a for loop:

for ploti=0,1 do begin
if ploti eq 1 then ps_start
... insert plotting commands here
if ploti eq 1 then ps_end
endfor

That way you can ensure that your plot commands are absolutely
identical.

-Jeremy.

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[Message index]

		Re: Write graphics to two devices simultaneously? By: stefan5465 on Mon, 13 April 2009 08:18
		Re: Write graphics to two devices simultaneously? By: stefan5465 on Mon, 13 April 2009 08:13
		Re: Write graphics to two devices simultaneously? By: David Fanning on Sun, 12 April 2009 09:59
		Re: Write graphics to two devices simultaneously? By: stefan5465 on Sun, 12 April 2009 09:43
		Re: Write graphics to two devices simultaneously? By: Jeremy Bailin on Sun, 12 April 2009 08:51
		Re: Write graphics to two devices simultaneously? By: David Fanning on Sat, 11 April 2009 11:08

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