How to add confidence intervals (95%) in a return level plot for a Weibull3 distribution?
7 次查看(过去 30 天)
显示 更早的评论
I have gotten a code from a colleague, which I have to update. The code (EVA_Weibull3.m) conducts a extreme value analysis by using the Weibull3 distribution for wind data (Wind_Krakenes_2005-2016). To evaluate the max values a block maximum method is used, with a block width of 30 days.
The script is working, but I want to include confidence intervals for the Weibull 3 distribution when plotting the return level. My figure now only contains the block maximum value of the data (blue dots) and the return value of the created distribution (black line).
![](https://www.mathworks.com/matlabcentral/answers/uploaded_files/168664/image.png)
My problem is that I'm not sure how to calculate the 95% confidence intervals?
I have attached the code, since it is almost 200 lines and I'm not sure what information is needed to calculate the 95% confidence intervals.
Mari
0 个评论
回答(1 个)
Mary Abbott
2017-10-30
Hello,
The "wblfit" function can be used to estimate the confidence interval of the parameters of a Weibull distribution:
https://www.mathworks.com/help/stats/wblfit.html
另请参阅
类别
在 Help Center 和 File Exchange 中查找有关 Exploration and Visualization 的更多信息
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!