Boxplot: Set Whisker options

Problem: Boxplot Whiskers can map to different data – sometimes this is +- 1.5 times the interquartil range, sometime the 5th and 95th percentile etc. In the box documentation, it is state that plotly uses the +-1.5 IQR as a standard. It is also stated that the boxpoints option allows other options, but seemingly boxpoints sets the displaying sof catterpoint and not of whiskers.

Proposed Solution: An option for setting what the whiskers mean. Candidates for this option would:

• n * IQR (for a +-1.5* the IQR, like the current default)
• nth percentiles (for something like a 5%/95% position)
• n*sd (for a +- 1 standard deviation position)

Or, if that option(s) already exists, a hint in the docuementation on how to set them.

从 issue 中链接的 boxplot 文档开始，检查其中如何描述现有的 boxpoints 选项。确定 whisker 行为是否已经可以配置，或者是否需要新增选项，然后定义并记录所支持的 IQR、百分位数或标准差行为。当所选的 whisker 设置能够正常工作，并且 boxplot 文档说明如何使用这些设置时，即视为完成。