select(condlist, choicelist, default=0)
The list of conditions which determine from which array in :None:None:`choicelist` the output elements are taken. When multiple conditions are satisfied, the first one encountered in :None:None:`condlist` is used.
The list of arrays from which the output elements are taken. It has to be of the same length as :None:None:`condlist`.
The element inserted in output
when all conditions evaluate to False.
The output at position m is the m-th element of the array in :None:None:`choicelist` where the m-th element of the corresponding array in :None:None:`condlist` is True.
Return an array drawn from elements in choicelist, depending on conditions.
where
Return elements from one of two arrays depending on condition.
>>> x = np.arange(6)
... condlist = [x<3, x>3]
... choicelist = [x, x**2]
... np.select(condlist, choicelist, 42) array([ 0, 1, 2, 42, 16, 25])
>>> condlist = [x<=4, x>3]See :
... choicelist = [x, x**2]
... np.select(condlist, choicelist, 55) array([ 0, 1, 2, 3, 4, 25])
The following pages refer to to this document either explicitly or contain code examples using this.
numpy.piecewise
dask.array.routines.select
numpy.compress
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