how to delete particular row in given matrix ?

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Matlab111
Matlab111 2014-11-4
编辑： Matlab111 2014-11-4
like this matrix
a=[190.6412 159.7899 0.9991];
b=[180.1084 166.6349 0.9992
190.6412 159.7899 0.9991
179.5966 155.4710 1.0000
196.5314 166.2689 1.0000];
than the answer should be like this
c= [180.1084 166.6349 0.9992
179.5966 155.4710 1.0000
196.5314 166.2689 1.0000];
i should delete only 'a' matrix from the 'b' matrix and display as 'c' matrix

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采纳的回答

Azzi Abdelmalek
Azzi Abdelmalek 2014-11-4
编辑：Azzi Abdelmalek 2014-11-4
c=setdiff(b,a,'rows')
  10 个评论
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Image Analyst
Image Analyst 2014-11-4
And this works just fine :
a=[190.6412 159.7899 0.9991];
b=[180.1084 166.6349 0.9992
190.6412 159.7899 0.9991
150.6412 169.7899 0.9995
179.5966 155.4710 1.0000
196.5314 166.2689 1.0000];
c=setdiff(b,a,'rows')
No error whatsoever. Please post the ACTUAL REAL code you are using, not this code that you just did, which works perfectly fine.
Matt Tearle
Matt Tearle 2014-11-4
You seem to be saying that the number of columns of b will vary, but above you also said that 'b' will be like 'nx3 matrix', which means that b will always have 3 columns. And the example you keep showing has 3 columns.
So, again, you need to tell us what behavior you expect for b: should b always have 3 columns, or can the number of columns of b change?

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更多回答（1 个）

the cyclist
the cyclist 2014-11-4
Here's one way:
tf = ismember(b,a,'rows')
c = b(not(tf),:)
  1 个评论
Matlab111
Matlab111 2014-11-4
编辑：Matlab111 2014-11-4
it's showing Error "A and S must have the same number of columns." in my case 'a' matrix will be same but 'b'matrix will get varies.

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