I want to change matrix value

I have image in V channel, I want to do like that IF the matirx element == this value then ignore else change the value of that pixel or number to this number then store it in new matrix How can I do that ?

Answer 1

[KSSV]

K = round(rand(3,3)) ;
K0 = K
% change equal to one's to -1
K(K==1) = -1

[Abdullah]

thanks for your reply but my issue is like that I have image matrix example

A = 1 2 3 4 5 6 7 8 9 1 3 5 B = 1:3 if A==B change the value of that pixel to 0 else just leave it save the new A in A_new

that what i need to do

[KSSV]

To check for A==B both of them should be of same dimension. In your example, they are different.

Answer 2

[Adam]

myArray( myArray ~= someValue ) = someOtherValue;

[Abdullah]

thanks for your reply but my issue is like that I have image matrix example

A = 1 2 3 4 5 6 7 8 9 1 3 5 B = 1:3 if A==B change the value of that pixel to 0 else just leave it save the new A in A_new

that what I need to do

[Adam]

A( ismember( A, B ) ) = 0;