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Two vectors different from each other at least at two points

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asim nadeem
asim nadeem 2018-10-6
编辑： jonas 2018-10-7
I want to compare two vectors and check whether they are different at least at two coordinates.

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jonas
jonas 2018-10-6
编辑：jonas 2018-10-6
sum(abs(V1-V2)~=0)>=2
Will output 1 if they differ at two or more indices. You may want to set a tolerance if they are floating point numbers.
tol=0.01
sum(abs(V1-V2)>tol)>=2
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asim nadeem
asim nadeem 2018-10-7
Thanks how can apply it on the rows of a matrix . I want to check if any two row vectors of a matrix satisfy this condition
jonas
jonas 2018-10-7
编辑：jonas 2018-10-7
If you remove the sum, then you will be left with a logical array where 1 represent indices with differing values. You can for example use
find(abs(V1-V2)>tol)

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