how do I draw the cluster boundaries in a scatter plot?

Question

zepp 2014-3-5

1
链接

此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/120330-how-do-i-draw-the-cluster-boundaries-in-a-scatter-plot

回答： Adam Cutbill 2014-3-18

I have a scatter plot of three clusters. How can I represent them by showing the cluster boundaries rather than using colours for the different clusters? I would like to draw circles (or ellipses) around each cluster. These clusters were created using a mixture model and I have also created the gmdistribution object of the model if that can be useful.

Thanks

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

Image Analyst 2014-3-7

0
链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/120330-how-do-i-draw-the-cluster-boundaries-in-a-scatter-plot#answer_127468

Maybe adapt this http://blogs.mathworks.com/pick/2014/01/03/fit-a-sphere/ ??

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。

Answer 2

Adam Cutbill 2014-3-18

0
链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/120330-how-do-i-draw-the-cluster-boundaries-in-a-scatter-plot#answer_129018

You can also use the convex hull operation if you're more concerned with capturing the boundary than making sure it is a ellipse.(<http://www.mathworks.com/help/matlab/math/convex-hulls.html>)