I remember almost wasting an hour trying to figure out how to have to Y-Axis

The key is to combine two graphs with the same X variable and two different Y variables.

In my case, I had to plot asset size and some other financial measure.

For the code, let’s use the auto.dta

sysuse auto

**Collapse the data (get mean for cleaner graphs)

collapse (mean) price mpg, by(weight)

**key syntax in bold

twoway line price weight, yaxis(2) || line mpg weight, yaxis(1)


Yay! Two Y-Axis!

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Happy coding ^^