Replace values in matrix based on array values

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N/A 2020-6-4
编辑： madhan ravi 2020-6-4
Hey guys,
I got a question and feel really dumb for not figuring it out myself.
So lets say I have a random matrix and I want to set all elements that match a specific value given by an array to zero. How do I do it ?
I know that I can do it for single elements, but I have no idea how to do it for several elements at the same time (to avoid for loops).
Example code:
x1=randi([0,10],[4,4])
y1=[3,4]
x1(x1==y1)=0;

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回答（2 个）

madhan ravi
madhan ravi 2020-6-4
编辑：madhan ravi 2020-6-4
x1(ismember(x1,y1)) = 0
Rik
Rik 2020-6-4
Nobody is born knowing about ismember and ismembertol. (use the latter if you expect float rounding errors)

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