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Re: write plots alternately to two postscripts files [message #73008 is a reply to message #73007]

Tue, 19 October 2010 08:40

Kenneth P. Bowman
Messages: 585
Registered: May 2000

Senior Member

In article <coednS_lB9t6JCDRnZ2dnUVZ_tWdnZ2d@giganews.com>,
Simon <user@compgroups.net/> wrote:

> The problem sounds easy, but I do not know where to find the solution.
> I want to write a program which should create two different postscript files, each having 100+ pages.
> However I don't want to open, create and close them one after another.
> It should work like this:
>
> Read and process a chunk of data.
> Add a plot to file 1
> Add a plot to file 2
> Read and process new chunk of data
> add a plot to file 1
> Add a plot to file 2
> and so on
>
> As the processed data is really large it is not possible to keep it all in memory. So first finish file1 and then create file2 is not an option.
>
> Is there any chance to switsch between to output files?
> Any help is appreciated!
> Simon

Because of the way direct graphics talks to devices, I don't believe
that this is possible. If I'm wrong, I expect someone will correct me!

I suggest that you create individual pages as separate files, convert them to PDF,
then use an external utility to merge the files into a single PDF.

Unfortunately this does not allow for alternating plots at the individual
plot level when you have multiple plots on a page.

Ken Bowman

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[Message index]

		Re: write plots alternately to two postscripts files By: R.G.Stockwell on Thu, 21 October 2010 09:25
		Re: write plots alternately to two postscripts files By: Norbert Hahn on Tue, 19 October 2010 09:23
		Re: write plots alternately to two postscripts files By: Kenneth P. Bowman on Tue, 19 October 2010 08:40

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