MATLAB: How to calculate the average without taking zeros values

Question

Hi, I have a large data list which has this form:

Y=   
   1  2 4 5 6 7 0 0 0 8 9 0 0 0 0... AVerage1=5.25
   2  3 4 5 6 7 0 0 0 8 0 0 0 9 0... Average2=5.5
   3  4 5 6 7 8 9 0 0 0 0 0 0 0 0... Average3=6
   .
   .
   .

I would like to calculate the average of each row wihout taking zeros values.

Thanks in advance

Answer 1

[ii,~,v] = find(Y);
out = accumarray(ii,v,[],@mean);