numpy.ma.make_mask_descr#
- 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
- ndtypedtype
The dtype to convert.
- Returns
- resultdtype
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.int64]}) >>> dtype dtype([('foo', '<f4'), ('bar', '<i8')]) >>> ma.make_mask_descr(dtype) dtype([('foo', '|b1'), ('bar', '|b1')]) >>> ma.make_mask_descr(np.float32) dtype('bool')