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From: Vinh Le on 20 Mar 2010 14:01
I have 2 matrices with the same row, matrixA (n by k) and matrixB (n by 1)

matrixA =

1 2 3 4
5 6 7 8
9 10 11 12
13 14 15 16
17 18 19 20

matrixB =

1
2
2
1
2

now I would like to remove row of matrix A, based the value of element in matrix B
For example remove all row of matrixA when value of element in matrixB is equal 2
matrixA = removeRow(matrixB)
matrixA =

1 2 3 4
13 14 15 16
Only row 1 and row 4 of matrixA remained.

The code I wrote as a mathlab script:
==========================================
for i=1:length(matrixB)
if matrix(1,i) = 2
index = index+1;
removeRow(index) = i;
end
end

matrixA(removeRow,:)=[]
=========================================
It does not work
??? Index of element to remove exceeds matrix dimensions.
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