Re: select data in formatted datafiles
- To: mathgroup at smc.vnet.net
- Subject: [mg31395] Re: [mg31379] select data in formatted datafiles
- From: Tomas Garza <tgarza01 at prodigy.net.mx>
- Date: Wed, 31 Oct 2001 19:59:18 -0500 (EST)
- References: <200110310831.DAA26497@smc.vnet.net>
- Sender: owner-wri-mathgroup at wolfram.com
These are your tab - delimited data (5 columns): In[1]:= data = ReadList["tabdata.txt", Number, RecordLists -> True] Out[1]= {{1.3, 2.6, 0.3, 9.27, 8}, {4, 5.2, -4, 0.45, 22}, {4, 6.4, -12, 0.13, 1}} These are the columns you want to work with (say,1 and 4): In[2]:= cols = {1, 4}; This is the result: In[3]:= Transpose[(Transpose[data][[#1]] & ) /@ cols] Out[3]= {{1.3, 9.27}, {4, 0.45}, {4, 0.13}} Tomas Garza Mexico City ----- Original Message ----- From: "Fabrice Gautheron" <fabrice.gautheron at cern.ch> To: mathgroup at smc.vnet.net Subject: [mg31395] [mg31379] select data in formatted datafiles > Hello, > > I am interested to analyse data from a tab formatted datafile. I need to > apply a function for one or two column(s) only over a total of 5 > columns. The ReadList command shows the format {data1, data2, data3, > ...},{data1, data2,...}, .. > > How to request only one or two columns (data2 column or data2 ar data5 > columns for example)? > > Many thanks in advance > > Fabrice > >
- References:
- select data in formatted datafiles
- From: Fabrice Gautheron <fabrice.gautheron@cern.ch>
- select data in formatted datafiles