Mablab/Octave - use cellfun to index one matrix with another

Question

I have a cell containing a random number of matrices, say a = {[300*20],....,[300*20]};. I have another cell of the same format, call it b, that contains the logicals of the position of the nan terms in a.

I want to use cellfun to loop through the cell and basically let the nan terms equal to 0 i.e. a(b)=0.

Thanks, j

Answer 1

You could define a function that replaces any NaN with zero.

function a = nan2zero(a)
  a(isnan(a)) = 0;

Then you can use cellfun to apply this function to your cell array.

a0 = cellfun(@nan2zero, a, 'UniformOutput', 0)

That way, you don't even need any matrices b.