how to plot a specific column of a matrix

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Amin
Amin 2014-7-24
回答： Michael Haderlein 2014-7-24
hi there , i have a 115340*3 matrix i want to plot just the second column of it, how can i do that ? any help would be appreciated.

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回答（2 个）

Mischa Kim
Mischa Kim 2014-7-24
编辑：Mischa Kim 2014-7-24
Amin, use
plot(mymat(:,2))
where mymat is the matrix.
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Amin
Amin 2014-7-24
unfortunately not ,
all i need is just s.th like this image
Amin
Amin 2014-7-24
and what i got from ur cmnd is like this

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Michael Haderlein
Michael Haderlein 2014-7-24
That looks as if your data is not sorted. Either you don't plot the lines
plot(...,'.')
or you sort beforehand:
[sort1,ind]=sort(matrix(:,2));
sort2=matrix(ind,3);
plot(sort1,sort2)
Best regards,
Michael

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