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MathGroup Archive 2004

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Re: Sorting text-file data into list lists

  • To: mathgroup at smc.vnet.net
  • Subject: [mg46263] Re: Sorting text-file data into list lists
  • From: Jens-Peer Kuska <kuska at informatik.uni-leipzig.de>
  • Date: Thu, 12 Feb 2004 22:46:29 -0500 (EST)
  • Organization: Universitaet Leipzig
  • References: <c0fsmv$c4k$1@smc.vnet.net>
  • Reply-to: kuska at informatik.uni-leipzig.de
  • Sender: owner-wri-mathgroup at wolfram.com

Hi,

Import["practice.txt","CSV"]

is not working ??

Regards
  Jens

Curt Fischer wrote:
> 
> Dear Group:
> 
> I have a large file with lots of numeric data, in matrix form.  The rows and
> the columns both have non-numeric text headers.  The comma is the delimiter.
> The character at the end of lines shows up as a "paragraph" mark in MS Word;
> I'm assuming it's a carriage return.
> 
> I want to import the data into a nested list, like a matrix is usually
> represented in Mathematica.  But my attempts using ReadList[] have so far
> failed.
> 
> In[1]:=
> !!practice.txt
> 
>                   col1 ,         col2,
> row1  ,      1.00  ,,        2.00,
> row2   ,      3.00   ,       -4.00
> 
> In[25]:=
> prac=ReadList["practice.txt", Record,
> RecordSeparators\[Rule]{",","\n"},RecordLists\[Rule]True]
> 
> Out[25]=
> {{                  col1 },{         col2},{row1  },{
>        1.00  },{        2.00},{row2   },{      3.00   },{       -4.00}}
> 
> In[27]:=
> ToExpression[prac]
> 
> Out[27]=
> {{col1},{col2},{row1},{1.},{2.},{row2},{3.},{-4.}}
> 
> What I'd like is something like {{col1, col2},{row1, 1., 2.},{row2, 3., 4.}}
> 
> What am I doing wrong?  Thanks for any insights.
> 
> --
> Curt Fischer


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