scatter plots with comparable circle size/weight in two graphs

[Long Hong]

Hi Stata users,

I am writing to ask a question on how to draw two weighted scatter plots with circles where the size of the circles are comparable.

My current code looks like the following:

scatter v1 v2 [w=pct] if sample == 1, msymbol(circle_hollow)
scatter v1 v2 [w=pct] if sample == 2, msymbol(circle_hollow)

However, the graphs are not comparable because the weighting option reweights the percent variable for each sample, so the circle sizes are not comparable.

I wonder if there is a convenient way to make the scale of circle sizes comparable between the two graphs.

Thanks a lot, and I look forward to hearing from you!

Best,
Long

[Nick Cox]

Use the by(sample) option rather than two if qualifiers. Naturally if there are other values of sample you need a qualifier too.

[Long Hong]

Thanks, Nick Cox!

It seems that by(sample) produces the same results as the ones using qualifiers.

[Andrew Musau]

See https://journals.sagepub.com/doi/abs...urnalCode=stja