I want to find multiple elements of a value in an array in Matlab code. I found the function mod and find, but these return the indices of elements and not the elements. Moreover, I wrote the following code:
x=[1 2 3 4];
if (mod(x,2)==0)
a=x;
end
but this does not work. How can I solve this problem?
Looks like you what to find all multiples of 2 (or any number), you can achieve this using :
a = x( mod(x,2) == 0 ) ;
When you do a = x, x is still x=[1 2 3 4] regardless if (mod(x,2)==0) is true or false;
you can assign a value to (mod(x,2)==0), e.g. val = (mod(x,2)==0), then append/add this value to a new array.
Given a vector numberList = [ 1, 2, 3, 4, 5, 6]; and a number number = 2; you can find indices (position in a vector) of the numbers in the numberList that are a multiple of number using indices = find(mod(numberList, number) ==0);.
If necessary you may display a list of this multiples calling: multiples = numberList(indices).
multiples =
2 4 6
a=xcopies the wholextoa