Quick answer: use merge.
You can also use rbind, but it will only be useful for simple cases.
See http://www.statmethods.net/management/merging.html for more details.
useful tidbits for using open source software in science
Quick answer: use merge.
You can also use rbind, but it will only be useful for simple cases.
See http://www.statmethods.net/management/merging.html for more details.