Create formatted list of pairwise combinations of variables in Stata
This repository provides the Stata package for the varcomblist command
and related material to create a formatted (i.e. affixed and delimited) list of
all pairwise combinations of variables in a varlist.
For k variables there
will accordingly be k!/{2!(k - 2)!} pairs.
The command allows to specifiy how variables within pairs are delimited/hyphenated as well as how pairs are delimited from one another. In addition, individual variables or pairs as a whole can be prefixed/suffixed as appropriate. Thus varcomblist can be useful, e.g., to create multiple interaction terms for commands not supporting factor variables or to specify multiple (error) covariances in structural equation modelling applications.
To install from within Stata type:
. net from https://github.com/sospiess/varcomblist/
. net install varcomblist
After installing type:
. help varcomblist
to get additional usage information and examples.
Stata 13 or higher
Dependencies: none
Notable changes to this project.
The format is based on Keep a Changelog,
and this project adheres to Semantic Versioning.
-/-
- first release of varcomblist package with command, help, and certification script
Sven O. Spieß, 7 Nov 2021