Displaying 1 result from an estimated 1 matches for "the_column".
2009 Oct 19
1
Convert data frame entries to numbers
...simple problem really, but since I'm quite
new to R I need to ask:
If I have a data frame:
str(test) :
$ classcol: Factor w/ 3 levels "1","2","3"
How do I convert the entries in this column to numbers. I.e., I want
to be abl to do simple calculations like test[1,the_column] - test
[2,the_column] without errors.
as.numeric(test) yeilds the error "object cannot be coerced to type
'double'"
Thanks!
John