find a value and following values in a matrix

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elisa ewin
elisa ewin il 9 Set 2016
Risposto: Andrei Bobrov il 9 Set 2016
Hi, I have a matrix
A= [23 34 45 0 0 0; 21 34 0 0 23 11; 34 23 0 0 0 22]
I want to find if a value is present and if it's present, I want to find the following values.
Eg I want to find in A the value 23, if it's present I want like output a matrix only with 23 and its following values
B= [23 34 45 0 0 0; 0 0 0 0 23 11; 0 23 0 0 0 22]
Can you help me? thanks

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Andrei Bobrov
Andrei Bobrov il 9 Set 2016
out = (cumsum(A == 23,2)>0).*A

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