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Re: Calling IDL from Perl [message #26965 is a reply to message #26963]

Wed, 03 October 2001 12:20

John-David T. Smith is currently offline

John-David T. Smith
Messages: 384
Registered: January 2000

Senior Member

gary.hodgesREMOVE@cires.colorado.edu wrote:
>
> OK, I have distilled my problem down to the simplest example I can. My
> problem is that the Perl script finishes before the IDL script is executed.
> I have tried sleep commands, but the results are the same. What can I do to
> get the IDL script to execute before the Perl script prints the contents of
> @ary? Below are the two scripts and the output.

Not that this is a perl list, but try:

#!/usr/bin/perl
open(IDL, "|/usr/local/bin/idl");
print IDL ".Compile loop \n";
print IDL "loop \n";
close IDL; #THIS ONE CRITICAL
@ary=(5,6,7,8);
for (@ary) {
print "$_\n";
}

Since you weren't closing the filehandle, the IDL input was not being
flushed, until after the program exited (at which point it was forced
close).

JD

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[Message index]

		Re: Calling IDL from Perl By: Craig Markwardt on Wed, 03 October 2001 13:43
		Re: Calling IDL from Perl By: gary.hodgesREMOVE on Wed, 03 October 2001 12:24
		Re: Calling IDL from Perl By: John-David T. Smith on Wed, 03 October 2001 12:20

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