I have a 71*294 matrix that contains a lot of NaN values.
In fact, the first 7 rows, the last 7 rows, and row 30 to 41 are just NaNs! But the rest of the matrix has values. I want to calculate the row-wise std (standard deviation). How can I write down the code that automatically neglects the NaNs and calculate the std of the non NaN values?