mindspore.numpy.logspace

mindspore.numpy.logspace(start, stop, num=50, endpoint=True, base=10.0, dtype=None, axis=0)[源代码]

Returns numbers spaced evenly on a log scale.

In linear space, the sequence starts at base ** start (base to the power of start) and ends with base ** stop (see endpoint below).

参数

start (Union[int, list(int), tuple(int), tensor]) – base ** start is the starting value of the sequence.
stop (Union[int, list(int), tuple(int), tensor]) – base ** stop is the final value of the sequence, unless endpoint is False. In that case, num + 1 values are spaced over the interval in log-space, of which all but the last (a sequence of length num) are returned.
num (int, optional) – Number of samples to generate. Default is 50.
endpoint (bool, optional) – If True, stop is the last sample. Otherwise, it is not included. Default is True.
base (Union[int, float], optional) – The base of the log space. The step size between the elements in \(ln(samples) / ln(base)\) (or \(log_{base}(samples)\)) is uniform. Default is 10.0.
dtype (Union[mindspore.dtype, str], optional) – Designated tensor dtype. If dtype is None, infer the data type from other input arguments. Default is None.
axis (int, optional) – The axis in the result to store the samples. Relevant only if start or stop is array-like. By default, the samples will be along a new axis inserted at the beginning. Use -1 to get an axis at the end. Default is 0.

返回

Tensor, equally spaced on a log scale.

异常

TypeError – If input arguments have types not specified above.

样例

>>> import mindspore.numpy as np
>>> print(np.logspace(0, 5, 6, base=2.0))
[ 1.  2.  4.  8. 16. 32.]