Scatter plot with markers weighted by repeated coordinates

[Hugo Mondaca]

Hello,
I'm trying to create a scatter plot with weighted markers by overlapping values. I want the size of the dot to be proportional to how many observations
have the same coordinates in the scatter plot. I was wondering if you could help me giving me some ideas or examples.
Thank you in advance!

[Maarten Buis]

I would use opacity for that. It avoids all kinds of problems regarding the scaling of the size of the bubbles. Opacity also deals with the case where the coordinates are not quite the same, but close enough so that the symbols overlap considerably.

sysuse nlsw88
set scheme s1color
scatter tenure grade, mcolor(%7)

[Nick Cox]

See the recent thread https://www.statalist.org/forums/for...size-revisited for a very similar question.

[Hugo Mondaca]

Many thanks! I appreciate your comments. I'll keep in mind using different colour intensities.