fprintf In column wise

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Sunag R A
Sunag R A 2016-12-17
编辑： Jan 2016-12-18
Hi, I have got one problem with respect to printf command while arranging the matrix in column wise for ".dat" file.Here are the details:
I have got the variables as
X = 0 0.1500 0.3000
0 0.1500 0.3000
0 0.1500 0.3000
and
Y = 0 0 0
0.1500 0.1500 0.1500
0.3000 0.3000 0.3000
and I need the arrangement in the "dat" file as
X Y
0 0
0.15 0
0.30 0
0 0.15
0.15 0.15
0.30 0.15
0 0.30
0.15 0.30
0.30 0.30
I tried this command :
fprintf(fid,'%f\n%f\n%f \n',[Y(:)',X(:)']); %%Say i have fopen then inserted into it with fileID
But the result I am getting is in a single column as Total X terms first and Total Y terms second,
0
0.15
0.30
0
0.15
0.30
0
0.15
0.30
0
0
0
0.15
0.15
0.15
0.30
0.30
0.30
Please help me out to make it correct in the write format. I tried using \t in between, But in "dat" file, it creates disturbance to upper commands if I use that.
Thanks and Regards,
Sunag R A.
[EDITED, Jan, code formatted]

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回答（2 个）

Jan
Jan 2016-12-17
编辑：Jan 2016-12-17
fprintf(fid, '%g %g\n', [Y(:), X(:)].')
or:
fprintf(fid, '%g %g\n', [Y(:).'; X(:).'])
Perhaps you want '%f' instead of '%g'. Your format string did not match your wanted result and the values must be concatenated differnetly. But you have been very near already. With a little bit more trying you would have found it soon.
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Sunag R A
Sunag R A 2016-12-17
编辑：Jan 2016-12-17
Hi,
Thank you very much for the reply. But this "%g" is giving me only a precision integer and not making two different columns even if the variable codes are same. I'm still in a confusion state of how to execute it.
Thanks and Regards,
Sunag R A.
Jan
Jan 2016-12-17
编辑：Jan 2016-12-18
No, the code I've posted creates 2 columns and the number of columns is not related to the format. This only depends on the number of outputs before the '\n' appears in the format string. Simply copy&paste my code and run it. The '%f' or '%g' changes only the number of decimals for integer values.
Please do not insert blanks infront of a text here. This triggers a formatting.

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David Barry
David Barry 2016-12-17
编辑：David Barry 2016-12-17
Assuming that x and y are always vectors of the same length then you could do something like this to merge them into a single variable and then call fprintf using this new variable.
reshape([X;Y], 1, numel([X;Y]))
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显示 1更早的评论
Jan
Jan 2016-12-17
@Sunag R A: did you see, that your code in the question is badly formatted? It is impossible to guess, what you want to achieve: Please read the "?" link to learn how to format text and code in this forum.
David Barry
David Barry 2016-12-17
What Jan Said. My answer was based on your original post which made it look like vectors.

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