Is it possible to access a cloud of a scatter plot in Matlab

Hi

I have a scatter plot with lots of pixcell values which I plotted in Matlab. Is it possible for me to pull out the cloud of the condensed area?

I mean, In the attached picture I want to have the points of the yellow area.

Is there any way to access it in Matlab?

Answer 1

[Cris LaPierre]

How did you create the yellow area? If you know the boundary, you could use inpolygon.

[Honey]

I draw it in paint. No, I don't have the boundry.

I just wanted to know the condensed area.

[Cris LaPierre]

I'm not aware of a great way to do this. You probably want to look into clustering methods. I would probably try something like dbscan. You can see a brief overview of common clustering methods in the Introduction to Clustering Algorithms video from our Data Processing and Feature Engineering with MATLAB course on Coursera.