Bookmark and Share

Notice: On April 23, 2014, Statalist moved from an email list to a forum, based at

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

re: st: Combining dates in Stata

From   Christopher Baum <>
To   "" <>
Subject   re: st: Combining dates in Stata
Date   Thu, 26 Jan 2012 15:33:51 -0500

I have two time variables in my dataset - one for year and one for month.

Both of these variables are numeric with Year containing four-digit
year values and month is a two-digit values ranging from 1 to 12.

I would like to combine the Year and month variables into one a time
variable to allow me to work with the dataset as a panel. How do I
recode (or replace) the Year and Semester month to create one.

Specifically, I would like to have one variable that reads 1/2000 for
january 2000, or 2000m1... I do not really mind the format!

Easily solved with help datetime_functions:

g yearmo = ym(year, month)
format yearmo %tm                 (or whatever you prefer)
tsset unitid yearmo


Kit Baum   |   Boston College Economics & DIW Berlin   |
                             An Introduction to Stata Programming  |
  An Introduction to Modern Econometrics Using Stata  |

*   For searches and help try:

© Copyright 1996–2018 StataCorp LLC   |   Terms of use   |   Privacy   |   Contact us   |   Site index