How can I use fprintf to print an mxn matrix of values to a file

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Thomas Burbey
Thomas Burbey 2019-9-19
评论： Star Strider 2020-11-6
I have a calculated flow net of values in a matrix that I want to print in order (mxn)
How can I print the matrix to a file that has the matrix (rows x cols) in order. How would I do this using fprintf since I don't see any way to repeat using this function.

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Star Strider
Star Strider 2019-9-19
There are a numberr of ways to write your matrix, depending on what you want to do.
Since you want to use fprintf, if ‘M’ is your matrix:
fid = fopen( ... , 'wt')
fprintf(fid, [repmat('%10.5f\t', 1, size(M,2)) '\n'], M') % Note Transpose Operation
fclose(fid);
That should work. Experiment to get the result you want.
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tbaracu
tbaracu 2020-8-16
编辑：tbaracu 2020-8-16
How I can print a group like this:
i x[i] DivDiff
--------------------------------
0 1 5 2 1
1 2 7 5
2 4 17
In which: i = 0, 1, 2 ; x = 1 , 2, 4 and DivDiff is matrix like this (empty spaces could be considered 0 or NaN):
5 2 1
7 5
17

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Minkang Cheng
Minkang Cheng 2020-11-6
Hello
I did [U,S,V]=svd(A)
The S is diagonal matrix of singular values with size oof mxn, then, I use fprintf to print S in a file as
fprintf(fid, [repmat('%10.5f\t', 1, size(S,2)) '\n'], S]
This statement works for U with size of mxm, and V with size of nxn
the result is mxn for S, but the singular values are not in diagonal. Somthing wrong for fprinf or svd function?
Thanks
MK

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