[R] Dataframe manipulation
jrkrideau at yahoo.ca
Tue Dec 4 15:48:47 CET 2007
See R-FAQ # 7-11 for the solution.
Have a look at
for a discussion of this type of problem and ways to
get around the issue.
--- Antje <niederlein-rstat at yahoo.de> wrote:
> can anybody help me with this problem?
> I have a dataframe, which contains its values as
> factors though I have numbers
> but it was read as factors with "scan". Now I would
> like to convert these
> columns (multiple) to a numeric format.
> # this example creates a similar situation
> testdata <- as.factor(c("1.1",NA,"2.3","5.5"))
> testdata2 <- as.factor(c("1.7","4.3","8.5",10.0))
> df <- data.frame(testdata, testdata2)
> what do I have to do to get the same datafram but
> with numeric values???
> R-help at r-project.org mailing list
> PLEASE do read the posting guide
> and provide commented, minimal, self-contained,
> reproducible code.
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