numpy.ma.make_mask_descr¶
- numpy.ma.make_mask_descr(ndtype)[source]¶
Construct a dtype description list from a given dtype.
Returns a new dtype object, with the type of all fields in ndtype to a boolean type. Field names are not altered.
Parameters: ndtype : dtype
The dtype to convert.
Returns: result : dtype
A dtype that looks like ndtype, the type of all fields is boolean.
Examples
>>> import numpy.ma as ma >>> dtype = np.dtype({'names':['foo', 'bar'], 'formats':[np.float32, np.int]}) >>> dtype dtype([('foo', '<f4'), ('bar', '<i4')]) >>> ma.make_mask_descr(dtype) dtype([('foo', '|b1'), ('bar', '|b1')]) >>> ma.make_mask_descr(np.float32) <type 'numpy.bool_'>