how to scale point size by area

[Zaf4]

Hi,

I have a case where I need to generate a scatter plot (via geom_point(aes(..., size="value")), where the areas (instead of the radii) of the points should scale by the given value.

For example, a point with the value of 40 should have area twice as a point with value of 20, not twice the radius. I tried setting it by playing with some parameters in scale_size and usingscale_size_area but could not get what I expected. Honestly, the name scale_size_area felt like I found what I was looking for, but did not work as I expected and scaled by the radius (verified via inspecting in the browser).

Is there a way or a workaround to do so or is there a possible implementation error in the scale_size_area()?

[alshan]

Hi, indeed, our scale_size() currently has an issue: it should scale the area of a point, not it's radius.
We will try to fix it in the next release.

For now, please try to use this workaround:scale_size(trans='sqrt') and adjust the range as needed.