[R] select rows from data based on a vector of char strings

Dirkheld dirk.bollen at soc.kuleuven.be
Wed Apr 23 09:13:23 CEST 2008


Hi,

I have loaded a dataset in R :
data = 

label   freq1   freq2
news   54      35
fun      37      21
milk    19      7
food     3       3
.... etc

And I have a vector
flist<-c("fun","food")

Now I want to use the vector 'flist' for selecting these values from 'data'
so that I get the following dataset :
label   freq1   freq2
fun      37      21
food     3       3

When I do 'data$label==flist[1]' I get 'F T F F', so it works for one item
in the char vector flist.
But, when I do 'data$label==flist' I get 'F F F F' while I expected 'F T F
T'. It seems that I can't perform this action with a vector of charstrings? 

Is there an other way to do so?

-- 
View this message in context: http://www.nabble.com/select-rows-from-data-based-on-a-vector-of-char-strings-tp16832735p16832735.html
Sent from the R help mailing list archive at Nabble.com.



More information about the R-help mailing list