MathGroup Archive: April 1999 [00383]

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Re: importing and using data

To: mathgroup at smc.vnet.net
Subject: [mg17073] Re: importing and using data
From: Jens-Peer Kuska <kuska at informatik.uni-leipzig.de>
Date: Fri, 23 Apr 1999 02:32:11 -0400
Organization: Universitaet Leipzig
References: <7f9gm5$53f@smc.vnet.net>
Sender: owner-wri-mathgroup at wolfram.com

Hi Doug,

I think you have somewhere a EndOfFile or what ever. Try

data=Select[data,NumericQ];

to get only the numbers. To find out what's wrong

wrong=Select[data,!NumericQ[#] &]

Hope that helps
  Jens

Doug VanGoethem wrote:
> 
> I have a large, one column data set in a tab-delimited text file.  It
> appears to read correctly when I use data=ReadList["filename", Number], but
> when I tried to do a ListPlot or perform a Fourier transform I get an error
> message that says it is not a list of numbers or pairs of numbers.  I have
> also tried data=Transpose[Readlist[....]], but this did not make any
> difference.
> 
> Has anyone encountered this before or know how to fix it?
> Thanks,
> Doug V

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