Calculating an average in an n x m array that contain zeros

How can i calculate an average in an array where data in the columns are zero values and I don't want the zero to be considered when computig an average.

For example: A= [2 2 ; 2 4; 1 0] >>> mean(A) results in 1.667 2 >>>the answer I want is 1.667 3

Any assistance is much appreciated.

Answer 1

[Matt Fig]

mn = sum(A)./sum(A~=0)