edit-generating a matrix value

I left out Pso at present since i am in need to submit my project,in next phase i decided to perform pso ,that is within a week ,now i want to do simple codings

that is

I have an image of 256x256,in thsese matrices i want to make some values as zero

for example let me consider 3x3

A=[2 3 9 1 8 5 2 7 6]

i need 10 matrix like

A_1=[2 0 9 0 8 0 2 7 0]

A_2=[0 3 9 1 0 5 0 0 6]

; ; ; A_10=[2 3 0 0 8 0 2 7 0]

like this i need to perform for 256x256 matrix,please help,

Answer 1

[Andrei Bobrov]

duplicate question

or

this is

[FIR]

Yes andrei,but one thing is that ,i get only 4 zeros,if i take 256x256 matrix i need atleast 60-70 zeros,please help