search for: tp26515212p26515212

Displaying 1 result from an estimated 1 matches for "tp26515212p26515212".

difference of two rows
2009 Nov 25
2
difference of two rows
...the difference, like this: ID YEAR diff 13 2007 NA 15 2003 3 15 2006 2 15 2008 NA 21 2006 1 21 2007 NA that should be fairly easy...I hope Thanks for any helpful comments B. -- View this message in context: http://old.nabble.com/difference-of-two-rows-tp26515212p26515212.html Sent from the R help mailing list archive at Nabble.com.