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From: | Varlei Everton Menconi |
Subject: | Help-me. How do I read the data from the first and second columns from a file in this format in Octave ? |
Date: | Wed, 20 Mar 2013 16:15:13 -0300 |
User-agent: | Mozilla/5.0 (X11; Linux x86_64; rv:17.0) Gecko/20130106 Thunderbird/17.0.2 |
Hello, Please, I would like to know how can I only read the first and second column of a data file (ascii, at attached) in this format? I need to create an array
of 2 columns with the elements the rows from the first and
second column of this file.
(The other columns are not used in my application). Note: The number of lines of this file is not fixed. May vary according to the records received from a day. 1349145660 29925.1 -434.77 46505.5 1/10/2012 23:41:0 1349145720 29925.1 -434.77 46505.4 1/10/2012 23:42:0 1349145780 29924.8 -434.75 46504.9 1/10/2012 23:43:0 1349145840 29924.7 -434.76 46504.7 1/10/2012 23:44:0 1349145900 29924.7 -434.75 46504.7 1/10/2012 23:45:0 1349145960 29924.7 -434.74 46504.5 1/10/2012 23:46:0 1349146020 29924.7 -434.72 46504.4 1/10/2012 23:47:0 1349146080 29924.6 -434.7 46504.3 1/10/2012 23:48:0 1349146140 29924.6 -434.68 46504.3 1/10/2012 23:49:0 1349146200 29924.5 -434.65 46504 1/10/2012 23:50:0 1349146260 29924.4 -434.64 46503.9 1/10/2012 23:51:0 1349146320 29924.3 -434.62 46503.7 1/10/2012 23:52:0 1349146380 29924 -434.62 46503.3 1/10/2012 23:53:0 1349146440 29923.9 -434.62 46503.1 1/10/2012 23:54:0 1349146500 29923.7 -434.62 46502.8 1/10/2012 23:55:0 1349146560 29923.4 -434.61 46502.4 1/10/2012 23:56:0 1349146620 29923.1 -434.61 46502.1 1/10/2012 23:57:0 1349146680 29922.9 -434.61 46501.7 1/10/2012 23:58:0 1349146740 29922.6 -434.65 46501.3 1/10/2012 23:59:0 1349146800 29922.4 -434.67 46500.9 2/10/2012 0:0:0 I'm trying to use the load command, but do not know how to refer to the columns as they do not have names. m = load("-ascii", "sampleDataFile.txt", ??????!!!! ) Other questions:
How to read the data
(column 5) and time (column 6) of the event, in the string
format or label ?
Thank you very much for the help. Varlei Everton Menconi address@hidden INPE-National Institute for Spacial Research town São José dos Campos, state SP Brazil. |
sampleDataFile.txt
Description: Text document
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