matlab matrix to ascii with blank rows

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maurizio
maurizio 2011 年 2 月 14 日
Hello,
I'm trying to export a matrix to ascii file, to then plot it using GNUPLOT. To plot a surface, I would need a matrix with blank rows in it, something like:
A(1) B(1) C(1, 1)
A(1) B(2) C(1, 2)
A(1) B(3) C(1, 3)
A(2) B(1) C(2, 1)
A(2) B(2) C(2, 2)
A(2) B(3) C(2, 3)
but I can't find any documentation about it.
Any idea?
Thanks in advance
  3 件のコメント
maurizio
maurizio 2011 年 2 月 16 日
Because when I'm going to start writing the PhD thesis, I will include a lot of plots (Letx -> eps) and everytime I used Matlab there was always something I had to fix with CorelDraw. I love Matlab but I've never been 100% satisfied with its plotting capability. Do not get me wrong, it's more than enough to visualize data, but as I sayd I've alaways had to modified the exported eps with another software to reach a publishable quality.
Third, I'm very curious by nature and due to the fact that I will produce a lot of plots in the next months, I think it's a good chance to learn something more about GNUPLOT.
Thanks for your question, bye
Maurizio

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採用された回答

Oleg Komarov
Oleg Komarov 2011 年 2 月 14 日
Look at fprintf
Oleg

その他の回答 (2 件)

Igor
Igor 2011 年 2 月 14 日
better than fprintf :)
dlmwrite
  2 件のコメント
Walter Roberson
Walter Roberson 2011 年 2 月 14 日
And you aren't going to get the blank lines in dlmwrite() unless you loop using the row offset and the -append option. fprintf() would be easier.

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maurizio
maurizio 2011 年 2 月 15 日
Thnks, fprint works perfectly:
A = [1 2 3 4 5;
5 4 3 2 1;
1 2 3 4 5];
B = [10 20 30 40 50];
t = [10 20 30];
for l = 1:length(t)
for m = 1:length(B)
C(m,1) = t(l);
C(m,2) = B(m);
C(m,3) = A(l,m);
fid = fopen('PlotVariable.dat', 'a');
fprintf(fid, '%5.3f %5.3f %5.3f \n', C(m,1:3));
fclose(fid)
end
fid = fopen('VarToPlot.dat', 'a');
fprintf(fid, '\n');
fclose(fid)
end
thanks again
Maurizio

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