[R] the first and last observation for each subject
Jorge Ivan Velez
jorgeivanvelez at gmail.com
Fri Jan 2 11:47:19 CET 2009
An embedded and charset-unspecified text was scrubbed...
Name: not available
URL: <https://stat.ethz.ch/pipermail/r-help/attachments/20090102/a0e637aa/attachment-0001.pl>
More information about the R-help
mailing list