Fitting Distribution to set of data

1 次查看（过去 30 天）
NeGM
NeGM 2021-1-31
编辑： Image Analyst 2021-1-31
Hi everyone,
I have a vector A represented by the histrogram attached in the image. I'd like to fit a normal, Gaussian, and Poisson distribution to see which one fits best. Is there a function in MATLAB that would allow me to do that? Thank you

请先登录，再回答此问题。

采纳的回答

Image Analyst
Image Analyst 2021-1-31
编辑：Image Analyst 2021-1-31
In my opinion, you should not fit either of those two. Because your distribution is not symmetrical you will have trouble fitting a Gaussian. I've had trouble before (MATLAB threw warnings) while trying to fit a Gaussian that was basically just the side slope of a Gaussian hump like you have. Likewise a Poisson expects in most cases a peak with lower values at the origin. I think a better equation to describe your equation would be an exponential decay, and I'm attaching a variety of demos for you.

更多回答（1 个）

Bjorn Gustavsson
Bjorn Gustavsson 2021-1-31
If you have the statistics toolbox you have the function fitdist, that should do the job. Just check the help and documentation to that function.
HTH

类别

在 Help Center 和 File Exchange 中查找有关 Half-Normal Distribution 的更多信息

标签

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!

Translated by