| Multiple PS-files? [message #31156] |
Fri, 07 June 2002 15:14 |
condor
Messages: 35
Registered: January 2002
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Imagine you're working on some big, honking GB-sized file with some
equally big, honking IDL-process. You want to produce four PS-files in
the end, each will contain about a hundred pages worth of stuff.
As you're sifting through the data, you perform lots of computations
on the individual data-items one-by-one (so the problem is nicely
serialized) and after each item you perform certain tests that tell
you what PS-file you'd like to append this particular plot to.
Currently, I simply run my process four times: In the beginning I
"set_plot" and "device,/filename='...'" and such and then plot into
this PS-file only if the given item should go into it. Then on the
second pass I choose a different filename and plot the second type of
results. And so on.
However, each run takes about six hours and my data-chunks keep
getting bigger and bigger and I'd really like to do all the plotting
in a sigle pass -- there's absolutely no reason to process all the
data four times other than that I cannot think of a way to output
into/append to four diffferent PS-files in a single process.
I.e. is there something that is morally equivalent to
device,/number-one
plot,such-n-such
device,/number-two
plot,something-else
devive,/number-one ; first one again
plot,another-such-n-such
??
Anybody got any ideas? It seems like a fabulously obvious
question/problem to me ...
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