is_missing

is_missing(matrix: any[] | Mat | Tensor) : any[] | Mat | Tensor

param matrix - the Array, Mat, or Tensor where you want to find a missing element(s).

returns: any[] | Mat | Tensor - A copy of matrix, where each element is '1' if missing, '0' if not.

This function effectively takes your input, which is a Mat, Tensor or Array, and if it has a missing value in that entry it puts a '1' in that entry. If it is not a missing value, it sets it to '0'. So you get returned a corresponding structure of what you put in matrix with 0's and 1's, where 1's represent missing elements and 0's otherwise.

Note that NaN, null, '' and undefined are defined to be missing but [] and {} are not.

This is useful for knowing where the missing elements are but not having an effect on them yet.