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

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Honey
Honey 2020-8-12
评论： Cris LaPierre 2020-8-13
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?

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Cris LaPierre
Cris LaPierre 2020-8-12
How did you create the yellow area? If you know the boundary, you could use inpolygon.
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Honey
Honey 2020-8-13
I draw it in paint. No, I don't have the boundry.
I just wanted to know the condensed area.
Cris LaPierre
Cris LaPierre 2020-8-13
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.

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