Good opportunity to plug one of my favorite books I've read in a while by @epopppp.bsky.social
press.princeton.edu/books/hardco...

Huge spillover effects on the broader relish industry

Please check it out and let me know if anything breaks with it! This is version 1.0 and I wrote it in about two hours so I'm sure there will be problems that arise! I'll also likely add more functionality as time goes on.

And since this command is just a simple wrapper for the -twoway line- command, all other -twoway- options are available:
trendline gdp_percap if inlist(regnum,1,2), time(year) category(regnum) lpattern(dash)

-if- statements are also allowed with the command:
trendline gdp_percap if inlist(regnum,1,2), time(year) category(regnum)

You can also change the statistic (any statistic available in the -collapse- command):
trendline gdp_percap, time(year) category(regnum) statistic(median)

And you can plot by group:
trendline gdp_percap, time(year) category(regnum)

The simplest form of the command plots mean values over time for your entire dataset:
trendline gdp_percap, time(year)

You can download it using this command:
net install trendline, from("https://raw.githubusercontent.com/jdcols01/trendline/main/installation/") replace

And then just type -help trendline- for the documentation.

I used to use -lgraph- but since it doesn't appear to have been updated in nearly a decade, the new -twoway- functions in Stata don't seem to work with it very well. This new package is a MUCH slimmer version purely for plotting aggregates over time. It is particularly useful for multi-level data.

Economics of funny

19) waffle: A Stata package for Waffle plots
(together with @jaredcolston.bsky.social!)

ssc install waffle, replace

github.com/asjadnaqvi/s...