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Why do variables become "undefined" after some error? [message #59531]

Tue, 01 April 2008 10:41

war
Messages: 21
Registered: December 2003

Junior Member

Dear IDL users,

I would like to ask hwy variables become "undefined" after an error in
running a program/routine? (If for some reason, I read data into
memory then run a routine which will process those data, but the
routine has some error, THEN all my variables become "undefinend"). It
is annoying since sometimes the data came from a call done much
earlier in the IDL session.

How can I restore the variables to their data rather than running
again the routine/command which read them?

Thanks for any answer,

A.

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