st: tslines for categories

[Caleb Southworth <caleb@uoregon.edu>]

What is a compact way to graph tslines for categories of another 
variable? For example, if I want to graph a proportion (p) that varies 
over time (year) by state.

-tsset state year-
-twoway (tsline p if state==1) (tsline p if state==2)-

How can this be done without having a tsline command for each 
category?

Caleb Southworth
Associate Professor
University of Oregon Sociology
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