sparse_k

jwst.extract_1d.soss_extract.atoca_utils.sparse_k(val, k, n_k)

Transform a 2D array val to a sparse matrix.

Parameters:

valarray

2D array to be transformed.

karray

2D array to set column position of values in sparse matrix. Negative values used for undefined positions in val.

n_kint

Number of columns in output sparse matrix.

Returns:

matarray

Sparse matrix to be returned.