Probability distribution for a mean wind speed

Question

Sergey Dukman 2015-9-19

0
链接

此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/243980-probability-distribution-for-a-mean-wind-speed

评论： Sergey Dukman 2015-9-19

Hello, I have a data of mean wind speed over defined area sampled for 10 last years. I would like to plot a Weibull distribution curve based on my data. How do I do this? I have tried wblplot(X)and it gives me a straight line, but the shape of a graph should be as smooth parabolic curve. Do I need more data to get Weibull distribution?

0 个评论
显示 -2更早的评论隐藏 -2更早的评论

请先登录，再进行评论。

请先登录，再回答此问题。

Answer 1

dpb 2015-9-19

0
链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/243980-probability-distribution-for-a-mean-wind-speed#answer_193029

From doc wblplot--

"The purpose of a Weibull probability plot is to graphically assess whether the data in X could come from a Weibull distribution. If the data are Weibull the plot will be linear."

So, looks like you've answered the fundamental question.

To plot the actual empirical cdf or pdf, fit to estimate the parameters from your data and plot using them.

2 个评论
显示无隐藏无

Nobel Mondal 2015-9-19

Just to add on that - you might want to use "wblfit" to get the estimation of your scale and shape parameters. Create a random weibull dataset with the same values, and compare with your original dataset.

Sergey Dukman 2015-9-19