Make the FIND more compact

Hi Coder, Just out of curiosity, if we can make the last two lines into a single line?

M = zeros (9,1);
Alert_LessThree = 1:3; 
B = [2 4 4 4 1 5 6 7 8];
[tf,Ioc_Alert_LessThree] = find (ismember(B, Alert_LessThree)); 
M(Ioc_Alert_LessThree,:) = 2;

Thank you

Answer 1

[Adam]

M( ismember(B, Alert_LessThree) ) = 2

Answer 2

[Star Strider]

Yes.

You only need the first output from ismember, that is a logical vector. I believe this is the result you want:

M(ismember(B, Alert_LessThree)) = 2;

[balandong]

Thanks guys, in fact, that is more efficient!