Dataframe manipulation
See R-FAQ # 7-11 for the solution. Have a look at http://finzi.psych.upenn.edu/R/Rhelp02a/archive/98227.html for a discussion of this type of problem and ways to get around the issue.
--- Antje <niederlein-rstat at yahoo.de> wrote:
Hello,
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???
Antje
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