matrix concatenation
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I need to create a text file with 3 columns. first two columns are of the same size, 100. The 3rd column just has one number in it. How can I do that?
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Walter Roberson
il 21 Feb 2012
With col1, col2, and col3 being column vectors:
fmt = ['%f %f %f\n' repmat('%f %f\n', 1, 99)];
fid = fopen('YourOutputFile.txt', 'wt');
fprintf(fid, fmt, col1(1), col2(1), col3(1), [col1(2:end), col2(2:end)].');
fclose(fid);
Warning: the details of the fprintf() call depend upon col1 and col2 being column vectors!
4 Commenti
Walter Roberson
il 21 Feb 2012
Sorry, dropped an important parameter. I have edited it in to the above.
Più risposte (1)
Sean de Wolski
il 21 Feb 2012
Do you want the third column to have 100 values the same?
If so:
A = [c1,c2,repmat(c3,100,1)];
If not:
A = [{c1} {c2} {c3}]
for more info:
doc cell
3 Commenti
Walter Roberson
il 21 Feb 2012
In order to do it with dlmwrite(), you would have to make two dlmwrite() calls, with the second using the -append option.
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