numpy.ma.masked_array.tolist — NumPy v1.13 Manual (original) (raw)
masked_array. tolist(fill_value=None)[source]¶
Return the data portion of the masked array as a hierarchical Python list.
Data items are converted to the nearest compatible Python type. Masked values are converted to fill_value. If fill_value is None, the corresponding entries in the output list will be None.
| Parameters: | fill_value : scalar, optional The value to use for invalid entries. Default is None. |
|---|---|
| Returns: | result : list The Python list representation of the masked array. |
Examples
x = np.ma.array([[1,2,3], [4,5,6], [7,8,9]], mask=[0] + [1,0]*4) x.tolist() [[1, None, 3], [None, 5, None], [7, None, 9]] x.tolist(-999) [[1, -999, 3], [-999, 5, -999], [7, -999, 9]]