Getting the nonzero mean of each cell element

Hi,

I have a cell dot_value (100x100 in size), and I wanted to find the mean of each cell (but only considering the nonzero elements). Here is my attempt:

for r1 = 1:l
    for r2 = 1:w
   mean_value(r1,r2) = mean(nonzeros(dot_value{r1,r2})); 
    end
end

I don't know why it returns an error "Conversion to cell from double is not possible."

[James Tursa]

What is the class of the dot_value elements? I.e.,

class(dot_value{1,1})

And have you pre-allocated mean_value to something?

Answer 1

[James Tursa]

Can you do this:

mean_value = cellfun(@(x)mean(nonzeros(x)),dot_value);