Find indices of specific values

Hi,

im trying to find the indices of values from this picture.

Was trying to make a find statement like: >> a=find(imag(X)<0.2 && imag(X)>-0.2) but it doesn't work. Is there any better way to find such indices?

[Marcin Kolacz]

Edit:

I already solved it.

made 2 different statements:

a=find(imag(X)<0.2

b=find(imag(X)>-0.2

and then i used

c=intersect(a,b)