R help - May 2014 - Combining data frames

Hi,

You can try ?merge() or ?join() from library(plyr)
merge(tempr, pr, by="date",all=TRUE)

A.K.


Hi, all!
?I have a problem. I have 2 data frame. Each contains column: "date"
and one unique column (temperature and pressure correspondingly). But dates are
not a same. First one since 1st Jan 2012 to 31 Dec 2012 once per day. And second
one since 5th May 2012 to 31 Sept 2012 once per day.
How can I join these frames by "date" column? Of course I need a
second frame is kept in exact time place in first frame by date column.

First table:

head(tempr)
? tempr??? date
1? 2.7? 01/01/12
2? 2.3? 01/02/12
3? 1.7? 01/03/12
4? 0.1? 01/04/12
5? 0.2? 01/05/12
6? 9.4? 01/06/12


Second table:
head(pr)
??? date?????? pr
1 05/05/12 1088.000
2 05/06/12 1087.000
3 05/07/12 1087.000
4 05/08/12 1086.999
5 05/09/12 1086.000
6 05/10/12 1086.000