RE: Sorting text-file data into list lists
- To: mathgroup at smc.vnet.net
- Subject: [mg46267] RE: [mg46234] Sorting text-file data into list lists
- From: David.Annetts at csiro.au
- Date: Thu, 12 Feb 2004 22:46:48 -0500 (EST)
- Sender: owner-wri-mathgroup at wolfram.com
Hi Curt, > 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. Try, In[5]:= Import["c:/tmpfiles/test.txt", "Table"] Out[5]= {{col1,col2,col3,col4},{row1,1.1, 1.2,1.3,1.4},{row2,2.1,2.2,2.3,2.4},{row3,3.1,3.2,3.3,3.4},{row4,4.1,4.2,\ 4.3,4.4},{row5,5.1,5.2,5.3,5.4},{row6,6.1,6.2,6.3,6.4}} Regards, Dave. ========================================== Dr. David Annetts EM Modelling Analyst CSIRO DEM Tel: +612 9490 5416 North Ryde Fax: +612 9490 5467 Australia David.Annetts at csiro.au ===========================================