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Re: A Conditional File Import

  • To: mathgroup at
  • Subject: [mg66105] Re: [mg66076] A Conditional File Import
  • From: János <janos.lobb at>
  • Date: Sat, 29 Apr 2006 03:41:09 -0400 (EDT)
  • References: <>
  • Sender: owner-wri-mathgroup at

On Apr 28, 2006, at 6:33 AM, Gregory Lypny wrote:

> Hello Everyone,
> I'm wondering if there's a way to do a conditional import of a file
> into Mathematica.  Say I wrote some code to process a lot of data and
> it takes a long time to complete.  After it's done, I save my results
> by exporting to a text file.  When I come back later (months
> later...) to pick up where I left off, I'd like to avoid
> inadvertently, and because of poor memory, running that long script
> again if I already have the results on my hard drive (you would think
> that I'd have the sense to check first, but no).
> I was thinking of a script that would work something like this:
> If there is a file X
> 	then
> 		import the file
> 	else
> 		[message] "The darn thing doesn't exist!"
> 		Reprocess the raw data --- [message] "Better make some coffee."
> End if
> 	Regards,
> 		Greg

Here is a newbie approach:


files = FileNames["*.darn"];


If[length==0,Print["The darn thing doesn't exist!"];FrontEndExecute 



What is the difference between OS X and Vista ?

Microsoft employees are exited about OS X.

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