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Re: filename check [message #22076 is a reply to message #22075]

Tue, 24 October 2000 00:00

mole6e23
Messages: 31
Registered: December 1998

Member

In article
<Pine.OSF.3.96.1001024143333.20360F-100000@zuaxp7.star.ucl.ac.uk>, Stuart
Colley <src@star.ucl.ac.uk> wrote:

> Can anyone suggest a way to check that a file exists before attempting to
> read from it, since the error messages obtained from trying to read from a
> non-existing file, don't make it clear that file doesn't exist.
>
> cheers,
> S

;; The following requires IDL 5.3 or higher...
;; if you don't have it, you'll have to figure
;; out the type yourself using the normal size
;; function
function file_exists, fileName

if( size( fileName, /type ) ne 7 ) then return, 0

fileList = findfile( fileName )
if( fileList[0] eq '' ) then return, 0 else return, 1

end ;; file_exists

--

Good luck!
Todd

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[Message index]

		Re: filename check By: Craig Markwardt on Tue, 24 October 2000 00:00
		Re: filename check By: mole6e23 on Tue, 24 October 2000 00:00
		Re: filename check By: Martin Schultz on Tue, 24 October 2000 00:00
		Re: filename check By: Alex Schuster on Tue, 24 October 2000 00:00

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