Time series for categorical variable

[Bafana Madida]

Hi everyone,

I am trying to make a time series line plot for dummy variable car purchased called "car" where 1="honda" 2="toyota" 3="vw" 4"bmw". I want to chart the number of cars purchased between 2010 to 2020. Im struggling with the syntex considering its a categorical value

[Nick Cox]

I wouldn't call a categorical variable with four distinct levels a dummy variable.

There is no data example in #1. At a guess something like this could be close to what you want:

preserve

contract car year
separate _freq, by(car) veryshortlabel
line _freq? year

restore

OR some variation on

tabplot car year 

where tabplot is from the Stata Journal.

[Bafana Madida]

Good day,

Thank you so much Nick. Worked like a charm