get_nodata_mask
get_nodata_mask#
- get_nodata_mask(array: Union[numpy.ma.core.MaskedArray, numpy.ndarray], has_nodata: bool, default_nodata: int = 0) numpy.ndarray [source]#
Get nodata mask from a masked array.
The nodata may not be set before, then pass a nodata value that will be evaluated on the array.
>>> diag_arr = np.diag([1,2,3]) array([[1, 0, 0], [0, 2, 0], [0, 0, 3]]) >>> get_nodata_mask(diag_arr, has_nodata=False) array([[1, 0, 0], [0, 1, 0], [0, 0, 1]], dtype=uint8) >>> get_nodata_mask(diag_arr, has_nodata=False, default_nodata=1) array([[0, 1, 1], [1, 1, 1], [1, 1, 1]], dtype=uint8)