dlmread reads rows instead of columns
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Hi all,
I have tried to import a column from a .txt file (contains 976 rows and 5 columns of numbers with a tab delimiter) using M = dlmread('filename.txt','\t',[0,0,5,0]), so M should contain first six elements of the first column. It gives 1x6 array instead: the first row of the txt file + 1 element from the second row. So it reads rows instead of columns. Am I missing something? How could I solve this problem? Sorry for my English.
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Answers (2)
KL
on 11 Dec 2017
Edited: KL
on 11 Dec 2017
EDITED
something like the following,
dlmread(filename,' ',[0 0 4 0])
or use textscan,
filename = 'dummy.txt';
noRows = 5;
A = cell(noRows,1);
fid = fopen(filename,'r');
fspec = '%f %*f %*f %*f %*f\n'; % use * to ignore reading
for k =1:noRows
A(k,1) = textscan(fid,fspec,1);
end
fclose(fid);
2 Comments
KL
on 11 Dec 2017
Not a bug, should be something to do with the file I reckon.
But I'm used to using textscan for custom import as it gives more freedom.
Yaakov Shaked
on 25 Mar 2019
I just ran in to a same problem - the data was being read row by row instead of column by column.
I found out that my delimeter was wrong (a tab insted of a space).
Once I fixed the delimeter, the data was read correctly.
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