How to import one column from txt file
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Hi
I need to import one column from .txt file which contains only numbers like 1.54 1.28 ...
Which function does that?
Thanks
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Answers (4)
Jos (10584)
on 7 Mar 2014
Take a look at at one of the import functions (textscan, load, etc.)
The easiest way is to import all the columns and then only keep the one you want to keep. For instance:
A = load ...
A = A(:,IndexOfColumnToKeep) ;
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Image Analyst
on 7 Mar 2014
You can use csvread if it's in csv format
M = csvread(filename,row,col)
Or use dlmread, importdata, textscan, fgetl, etc. depending on the format of the text file.
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Image Analyst
on 8 Mar 2014
That file has such a big variety of formats that I'd probably just use allwords and fgetl(). Then build up a cell array of the words in a loop and then call xlswrite. In pseudocode
fid = fopen('S1P1.txt', 'r');
tline = fgetl(fid);
lineCounter = 1;
while ischar(tline)
disp(tline)
tline = fgetl(fid);
% Separate the line into separate words.
theWords = allwords(tline);
% Put the words into a cell array.
for k = 1 : length(theWords)
ca{lineCounter, k} = theWords{k};
end
end
xlswrite('text.xlsx', ca);
fclose(fid);
That's untested code just off the top of my head and it may need debugging (which I hope you know how to do).
Dominika
on 8 Mar 2014
1 Comment
per isakson
on 8 Mar 2014
Edited: per isakson
on 8 Mar 2014
- Which lines are part of the file?
- Why not using Excel?
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