How do I replace 0 with NaN in an 3D array?

Hello,

I'm novice with matlab and I am looking for analyze a 3D object. However, the zero in my 3D array represent nothing in reality. So I would like replace them by NaN on each z before to perform more analysis of my object.

When I use:

img(img==0) = NaN

it does not work.

Have you another idea ?

Thanks :)

Answer 1

[Fangjun Jiang]

Maybe those values are not strictly zero. Try this example

a=zeros(2,2,2)
a(a==0)=nan