mindspore.numpy.geomspace

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

Returns numbers spaced evenly on a log scale (a geometric progression).

This is similar to logspace, but with endpoints specified directly. Each output sample is a constant multiple of the previous.

参数

  • start (Union[int, list(int), tuple(int), tensor]) – The starting value of the sequence.

  • stop (Union[int, list(int), tuple(int), tensor]) – 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: 50 .

  • endpoint (bool, optional) – If True, stop is the last sample. Otherwise, it is not included. Default: True .

  • dtype (Union[mindspore.dtype, str], optional) – Designated tensor dtype, can be in format of np.float32, or float32.If dtype is None, infer the data type from other input arguments. Default: None .

  • axis (int, optional) – The axis in the result to store the samples. Relevant only if start or stop is array-like. By default (0), the samples will be along a new axis inserted at the beginning. Use -1 to get an axis at the end. Default: 0 .

返回

Tensor, with samples equally spaced on a log scale.

异常

TypeError – If input arguments have types not specified above.

Supported Platforms:

Ascend GPU CPU

样例

>>> import mindspore.numpy as np
>>> output = np.geomspace(1, 256, num=9)
>>> print(output)
[  1.   2.   4.   8.  16.  32.  64. 128. 256.]
>>> output = np.geomspace(1, 256, num=8, endpoint=False)
>>> print(output)
[  1.   2.   4.   8.  16.  32.  64. 128.]