search for: tp3933512p3933512

Displaying 1 result from an estimated 1 matches for "tp3933512p3933512".

2011 Oct 24
2
How to selectively sum rows [Beginner question]
...sum the passengers (and do not add a new row) Is this logical? If so, I think I just need some help on syntax (or do I use a script?). Thanks. The first few rows of data look like this: -- View this message in context: http://r.789695.n4.nabble.com/How-to-selectively-sum-rows-Beginner-question-tp3933512p3933512.html Sent from the R help mailing list archive at Nabble.com.