分布拟合器的评估功能通过代码如何实现？

进行威布尔分布时，如何进行评估，并且生成置信上下限在同一图层画出，如下图：

[Walter Roberson]

Approximate translation:

How to implement the evaluation function of the distribution fitter through code?

When performing Weibull distribution, how to evaluate and generate upper and lower confidence limits and draw them on the same layer, as shown below: