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Re: Vectorized STRMID ( was Re: Selecting odd/even numbered files) [message #30052]

Wed, 03 April 2002 15:38

Wayne Landsman
Messages: 117
Registered: January 1997

Senior Member

David Fanning wrote

> You wouldn't be up for writing a string processing tutorial
> (a la JD's Dimensional Juggling tutorial) would you, Wayne?
> I can't be the only one who gets totally confused every time
> I have to do something like this.

I'll put it on the "to do"list -- so maybe it will be done in a couple of months...

Meanwhile, here's a one line solution to the orignal problem (of selecting only
even numbered files), by specifying that the last character must be an even number

files = file_search('*[02468].ext')

The above works in V5.5 (when file_search() was introduced as a replacement for
findfile()) . For Unix systems and any version of IDL one can also write

files = findfile('*[02468].ext')

but, unlike the file_search() method,I don't believe that this method works for
non-Unix systems.

Cheers, --Wayne landsman@mpb.gsfc.nasa.gov

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		Re: Vectorized STRMID ( was Re: Selecting odd/even numbered files) By: Wayne Landsman on Wed, 03 April 2002 15:38
		Re: Vectorized STRMID ( was Re: Selecting odd/even numbered files) By: David Fanning on Wed, 03 April 2002 13:24

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