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I have a scatter graph with points placed on it like:

enter image description here

I am trying to find an equation that gives me the density of the points on the graph, for example the points on this graph:

enter image description here

are closer together so it would have a higher density than something like this:

enter image description here

I apologize if i am not using the proper terminology or anything, i'm not very good at math..

Edit: To clarify, each point has a x/y coordinate and i do have the max x/y coordinate for the graph. The points are placed at their coordinate within the max x/y coordinates.

Anon
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  • If they are absolutely randomly placed, the expected density won't give you much info. – UserX Sep 19 '14 at 18:07
  • You need to supply the area with respect to which the density is being calculated. Is it the smallest rectangle encompassing the points? The smallest circle? What? – David P Sep 19 '14 at 18:12
  • I'm not sure if this answers the question but the smallest circle covering the area of the points should work. I have the max x/y coordinates for the graph and the x/y coordinates for each point. The points are placed randomly within the max x/y coordinates. – Anon Sep 19 '14 at 18:26

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