matrix ismember of another matrix

hello!

i have

A=[1 2 3 4 5]

B=[2 4]

i want to create D=[1 3 5], which is the A without the elements of B

j=1;

A=[1 2 3 4 5];

B=[2 4];

C=ismember(A,B);

for i=1:5

if C(i)==0

A(j)=A(i);

j=j+1;

end

end

for i=1:3

D(i)=A(i);

end

the code above works fine,but i want to know if there is any other way to do this,for any matrices with any dimentions

Thank you very much!

Answer 1

[per isakson]

    A=[1 2 3 4 5];
    B=[2 4];
    C = setdiff( A, B )

returns

    C =
         1     3     5

Not sorted:

    C = setdiff( A, B, 'stable' );

.

This works with vectors, however, "any matrices with any dimentions" is a different story

[alex]

thank you very much!

[alex]

i have a problem here

A = 2:.1:15

B=[9.4000 10.4000]

C=setdiff(A,B)

the elements 9.4000 and 10.4000 are in the C

however,if B=[9.3000 10.3000] then the setdiff works fine.

any idea why this happens?