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Re: Findfile in large directories [message #50631 is a reply to message #50624]

Fri, 06 October 2006 07:22

David Fanning
Messages: 11724
Registered: August 2001

Senior Member

Wox writes:

> In a widget application I'm making, I have "next file", "previous
> file" buttons which do the following:
> ...
> path = findfile(list.path+'*'+list.Format)
> nfiles = n_elements(path)
> path = SortListFiles(path,list.sortmethod,list.sortseparator)
> ind = where(path eq list.path+list.file,count)
> ...
> <take next or previous file (if any) and read/display it>
> ...
>
> The current loaded file is "list.path+list.file". SortListFiles sorts
> the files (in general not just string sort).
>
> However, in directories with up to 1000 or more files (usually also on
> an SMB mounted drive), this is rather slow (findfile takes most time).
>
> Any ideas how to make this faster?

FINDFILE is obsolete. Have you tried FILE_SEARCH?
No idea if it would be faster or not. I'd have guessed
the sorting would be the bottleneck here.

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: Findfile in large directories By: David Fanning on Mon, 09 October 2006 06:00
		Re: Findfile in large directories By: greg michael on Mon, 09 October 2006 03:35
		Re: Findfile in large directories By: Wox on Mon, 09 October 2006 00:14
		Re: Findfile in large directories By: George N. White III on Fri, 06 October 2006 11:26
		Re: Findfile in large directories By: David Fanning on Fri, 06 October 2006 07:22
		Re: Findfile in large directories By: Wox on Fri, 13 October 2006 01:03

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