I have a data frame full of integer values. I need a matrix full of
numeric values.
?data.matrix reads:
Return the matrix obtained by converting all the variables in a
data frame to numeric mode and then binding them together as the
columns of a matrix.
This does not work.
test.df <- data.frame(a=as.integer(c(1,2,3)), b=as.integer(c(4,5,6)))
> class(test.df[[1,1]])
[1] "integer"
> class(data.matrix(test.df)[[1]])
[1] "integer"
What's going on here?
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