这是使用broadcasting-
def create_ranges(start, stop, N, endpoint=True):
if endpoint==1:
divisor = N-1
else:
divisor = N
steps = (1.0/divisor) * (stop - start)
return steps[:,None]*np.arange(N) + start[:,None]
样品运行-
In [22]: # Setup start, stop for each row and no. of elems in each row
...: start = np.array([1,4,2])
...: stop = np.array([6,7,6])
...: N = 5
...:
In [23]: create_ranges(start, stop, 5)
Out[23]:
array([[ 1. , 2.25, 3.5 , 4.75, 6. ],
[ 4. , 4.75, 5.5 , 6.25, 7. ],
[ 2. , 3. , 4. , 5. , 6. ]])
In [24]: create_ranges(start, stop, 5, endpoint=False)
Out[24]:
array([[ 1. , 2. , 3. , 4. , 5. ],
[ 4. , 4.6, 5.2, 5.8, 6.4],
[ 2. , 2.8, 3.6, 4.4, 5.2]])
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