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Python numeric.log10方法代码示例

本文整理汇总了Python中numpy.core.numeric.log10方法的典型用法代码示例。如果您正苦于以下问题:Python numeric.log10方法的具体用法?Python numeric.log10怎么用?Python numeric.log10使用的例子?那么, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在numpy.core.numeric的用法示例。


在下文中一共展示了numeric.log10方法的1个代码示例,这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞,您的评价将有助于系统推荐出更棒的Python代码示例。

示例1: log10

# 需要导入模块: from numpy.core import numeric [as 别名]
# 或者: from numpy.core.numeric import log10 [as 别名]
def log10(x):
    """
    Compute the logarithm base 10 of `x`.

    Return the "principal value" (for a description of this, see
    `numpy.log10`) of :math:`log_{10}(x)`. For real `x > 0`, this
    is a real number (``log10(0)`` returns ``-inf`` and ``log10(np.inf)``
    returns ``inf``). Otherwise, the complex principle value is returned.

    Parameters
    ----------
    x : array_like or scalar
       The value(s) whose log base 10 is (are) required.

    Returns
    -------
    out : ndarray or scalar
       The log base 10 of the `x` value(s). If `x` was a scalar, so is `out`,
       otherwise an array object is returned.

    See Also
    --------
    numpy.log10

    Notes
    -----
    For a log10() that returns ``NAN`` when real `x < 0`, use `numpy.log10`
    (note, however, that otherwise `numpy.log10` and this `log10` are
    identical, i.e., both return ``-inf`` for `x = 0`, ``inf`` for `x = inf`,
    and, notably, the complex principle value if ``x.imag != 0``).

    Examples
    --------

    (We set the printing precision so the example can be auto-tested)

    >>> np.set_printoptions(precision=4)

    >>> np.emath.log10(10**1)
    1.0

    >>> np.emath.log10([-10**1, -10**2, 10**2])
    array([ 1.+1.3644j,  2.+1.3644j,  2.+0.j    ])

    """
    x = _fix_real_lt_zero(x)
    return nx.log10(x) 
开发者ID:Frank-qlu,项目名称:recruit,代码行数:49,代码来源:scimath.py


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