How can I write a matrix into a tab delimited .dat file with header?

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Iro
Iro 2013-5-2
Hi,
I would like to ask you the following: I have a matrix (lets call it Output[]) with numbers (integ, decimal and bool) and I want to transform it into a tab delimited .dat file in a format that includes a *header *in the first line and also curly brackets in every row like the following:
Number of Output rows: 240 %this number will be actually assigned by the size of the matrix
{ 102 103 3.5 2.7 1 2.3 } %the spaces are actually tabs
{ 1223 305 8 9 3 0.5 }
{ 507 109 6.5 8.7 2 7.3 }
...and so on
Can somebody help me to do it with fprintf?
Thanks, Iro

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采纳的回答

Walter Roberson
Walter Roberson 2013-5-2
fid = fopen('YourFile.dat', 'wt');
fprintf(fid, 'Number of Output rows: %d\n', size(Output,1));
fprintf(fid, '{\t%g\t%g\t%g\t%g\t%g\t%g\t}\n', Output.' );
fclose(fid);
Each \t represents a tab.
Notice the .' after Output. This is needed so that the output comes out by rows. (It works. Worry about why another time ;-) )

更多回答（1 个）

Iro
Iro 2013-5-2
Hi Walter,
thank you for your answer. I understand the transpose to some extent but I do not get the dot. However it indeed worked! :)
What about the 'wt' instead of 'w' in fopen? Would that mean something in case I want to overwrite this file for each iteration of my code?
Thanks again,
Iro
  1 个评论
Walter Roberson
Walter Roberson 2013-5-2
'wt' means you are writing a text file, and is otherwise the same as 'w'.
.' is pure transpose, whereas ' without a dot is conjugate transpose

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