擅长:python、mysql、java
<p>根据docstring</p>
<blockquote>
<p>... uses a definition of circular variance that in the limit of small
angles returns a number close to the 'linear' variance.</p>
</blockquote>
<p>事实上,它是维基百科所说的<code>circstd</code>的平方</p>
<blockquote>
<p>... values between 0 and infinity. This definition of the standard
deviation ... is useful because for a wrapped normal distribution, it
is an estimator of the standard deviation of the underlying normal
distribution. It will therefore allow the circular distribution to be
standardized as in the linear case, for small values of the standard
deviation. This also applies to the von Mises distribution ...</p>
</blockquote>
<p>它还提到,对于小息差,循环方差的两个定义是相同的,直到因子为2。在</p>