Append data to vector form a column of a dataframe
Hi Dom, This is because "3" is recycled. It is necessary because the number of columns have to be the same for every row. Try this instead: c(test$a, 2) ## you wrote "3" but meant "2" I guess HTH, Ivan Le 10/12/2011 10:47, behave a ?crit :
Dear R-community, When doing this:
test<-data.frame(a=c(1,2,3)) rbind(test$a, 3)
I expect something like:
1 2 3 2
but get:
[,1] [,2] [,3] [1,] 1 2 3 [2,] 2 2 2
the same for: rbind(test[["a"]], 2) or rbind(as.vector(test[["a"]]), 2) or rbind(t(as.vector(test[["a"]])), 2) Why is that and how do I extract the "values" from a dataframe to get the desired result? Thank you Dom -- View this message in context: http://r.789695.n4.nabble.com/Append-data-to-vector-form-a-column-of-a-dataframe-tp3897205p3897205.html Sent from the R help mailing list archive at Nabble.com.
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Ivan CALANDRA PhD Student University of Hamburg Biozentrum Grindel und Zoologisches Museum Dept. Mammalogy Martin-Luther-King-Platz 3 D-20146 Hamburg, GERMANY +49(0)40 42838 6231 ivan.calandra at uni-hamburg.de ********** http://www.for771.uni-bonn.de http://webapp5.rrz.uni-hamburg.de/mammals/eng/1525_8_1.php