Hi,

I need some help with vectors in Matlab.

I have a vector A with 100 elements. From previous calculations, 80 of the elements are 1 and the rest are zero.

But I need to make the vector with half of its element "zero" and the remaining half "one" by randomly turning some one's to zero.

So I need to turn 30 (out of 80 currently in the vector) 1's into zero and I have to do it randomly. Can anyone help me with this problem?

Thanks,

John.