I've got a huge matrix of 3587 x 5677056, and I've got to find the average (avg) of this matrix and the standart deviation (sd) for removing the spike values that are along the matrix. So, I will remove all the values of my matrix that are greater than (avg + 3 sd). I've build up the following code:
media_total = NaNmean(matriz_total, 'all');
x = (avg + 3sd)
L = bsxfun(@le,media_total,x);
media_total(L) = NaN;
But I'm getting the following error:
Error using size
Dimension argument must be a positive integer scalar within indexing range.
Error in nanmean (line 43)
count = size(x,dim) - sum(nans,dim);
Does anyone know how to solve it?
And aftewards, how can I effectively remove all the values greater than (avg + 3 sd) and substitute these values for NaN?
Thank's very much for any help!!!
Regards, Paulo Beiral.