Storing indices from a matrix

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shahzer rahman 2020-3-2

评论： shahzer rahman 2020-3-2

Hye all. I am relatively new with Matlab. I am modelling a vehicle suspension system right now.

Assume I have a column matrix that has 6 elements. A= [ 1 2 3 -4 6 -2]'

I want to extract the index of the values that are negative, and store all of them as a column matrix or an array 'B'.

Expected result : B= [4 6]

Kindly help.

Stephan 2020-3-2

编辑：Stephan 2020-3-2

A= [ 1 2 3 -4 6 -2]'
B = find(A<0)
A =
     1
     2
     3
    -4
     6
    -2
B =
     4
     6

shahzer rahman 2020-3-2

Thanks man. works fine.

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