# I want to change matrix value

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Abdullah on 3 Mar 2017
Commented: Adam on 8 Mar 2017
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 ?

KSSV on 3 Mar 2017
K = round(rand(3,3)) ;
K0 = K
% change equal to one's to -1
K(K==1) = -1

Abdullah on 8 Mar 2017
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 on 8 Mar 2017
To check for A==B both of them should be of same dimension. In your example, they are different.

Edited: Adam on 3 Mar 2017
myArray( myArray ~= someValue ) = someOtherValue;

Abdullah on 8 Mar 2017
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
A( ismember( A, B ) ) = 0;