Replace values in matrix based on array values

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;

Answer 1

[madhan ravi]

x1(ismember(x1,y1)) = 0

Answer 2

[Rik]

Nobody is born knowing about ismember and ismembertol. (use the latter if you expect float rounding errors)