How to read a text file with multiplel matrix data sets listed one after another

fid = fopen('sample.txt','r');
out = textscan(fid,'%s %s %s \r\n %f %f %f \r\n %f %f %f \r\n %f %f %f \r\n %f %f %f \r\n');
fclose(fid);
celldisp(out)

It depends on your OS if you have to use \r (MAC) or \n (Unix) or \r\n (Windows)

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Liqing 2011-8-25

Thank you very much. It works.

What if I have unknown and different number of matrix rows for each of them?

Walter Roberson 2011-8-25

textscan by default ignores both \r and \n as being "Whitespace", so you can ignore the terminator issue:

textscan(fid, [repmat('%s',1,3) repmat('%f',1,12)]);

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Answer 3

Fangjun Jiang 2011-8-25

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What is your desired output? Do you care about the text strings? The overall approach is to use textscan(). You can type help textscan or doc textscan for details.

fid=fopen('sample.txt','rt');
data=textscan(fid,'%f','CommentStyle','Depth');
fclose(fid);
data{1}

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Fangjun Jiang 2011-8-25

You can use fgetl() to read the file line by line. If the line contains comma, read it as string (%s), otherwise, read it as double (%f). There is really no hard part. It's just tedious. If you just have one file to read, it might worth to convert it to a .xls file and then use [Num,Txt,Raw]=xlsread().