How to multiply all elements of matrix

Suppose I have a matrix

         0    0.3333         0         0    0.6667
         0         0    1.0000         0         0
         0         0         0         0    1.0000
    1.0000         0         0         0         0
    0.4000         0         0    0.2000    0.4000

I want to multiply nonzero elements of above matrix i.e. 0.3333*0.6667*1*1*1*0.4*0.2*0.4=0.00711. How to do this.

Answer 1

[Azzi Abdelmalek]

prod(nonzeros(A(:)))

[Guillaume]

You don't even need the (:) since nonzeros will return a vector anyway:

prod(nonzeros(A))

Answer 2

[Stephen23]

 prod(A(A~=0))