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Re: current directory changes unexpectedly [message #69648]

Wed, 27 January 2010 06:47

David Fanning
Messages: 11724
Registered: August 2001

Senior Member

simona bellavista writes:

> I start working in idl, I compile and run programs, abruptly it cannot
> find anymore the routines I am working on, I check the current folder
> with
> cd, current=dir
> print, dir
> and I discover the current folder has changed.
>
> I performed several tests trying to reproduce the error intentionally,
> but I have never succeed.

Then I would think the most likely explanation, especially
if you think this is happening randomly, is that one of the
programs you are running changes directories with a CD
command. I have programs, for example, that save the
current directory and change to some other directory:

CD, CURRENT=thisDir, 'someotherDirectory'

Before I exit the program, I change back:

CD, thisDir

If such a program stopped in the middle of the program for
some reason (I forgot to add a Catch error handler to the
program, for example), then I would be in some directory
I didn't expect to be in.

I can imagine a program that even forgets to switch back
to the starting directory, perhaps by returning in an
unusual location or from a Catch error handler. That
would also produce the result you are seeing.

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.")

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[Message index]

		Re: current directory changes unexpectedly By: David Fanning on Wed, 27 January 2010 06:47
		Re: current directory changes unexpectedly By: simona bellavista on Wed, 27 January 2010 06:38
		Re: current directory changes unexpectedly By: David Fanning on Wed, 27 January 2010 06:25
		Re: current directory changes unexpectedly By: simona bellavista on Wed, 27 January 2010 06:22
		Re: current directory changes unexpectedly By: penteado on Wed, 27 January 2010 06:08

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