Hi @ all,
I wamnt to combine two dataframes including a condition.
I have two dataframes like the following:
animal<-c("bear","bear","lion","monkey","fish","monkey","bear","zebra","zebra")
val<-c(2,42,67,5,12,9,87,1,12)
place<-c("S","N","N","Z","R","O","E","I","Q")
df1<-data.frame(animal,val,place)
animal<-c("bear","bear","lion","monkey","fish","monkey","bear","zebra","zebra")
val<-c(21,45,78,6,18,77,89,17,28)
place<-c("S","N","N","Z","R","G","O","P","Q")
df2<-data.frame(animal,val,place)
I would like to merge them with a condition. If "animal" and "place" are
eqal in both df's, then add the values.
If not add all three parameters ("animal","value","place") at the bottom
(like rbind).
I hope somebody can help me.
Thank a lot.
geo
--
View this message in context:
http://r.789695.n4.nabble.com/merge-dataframes-with-condition-tp4649605.html
Sent from the R help mailing list archive at Nabble.com.
______________________________________________
R-help@r-project.org mailing list
https://stat.ethz.ch/mailman/listinfo/r-help
PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
and provide commented, minimal, self-contained, reproducible code.
