On 29-02-2012, at 11:49, Aniruddha Mukherjee wrote:
>
> Hello Berend.
>
> Many thanks for your prompt reply and that helped me a lot. One more thing,
> if you please explain, I shall be highly obliged.
> Why in my case (i.e. when stringsAsFactors was TRUE by default),
> > as.numeric(matr1$Pulse_rate)
> displays the following
> [1] 4 5 7 5 9 8 6 10 3 2 5 1 10 10
> ?
?factor
and play a little bit
as.factor(c("A","8.9"))
as.numeric(as.factor(c("A","8.9")))
str(as.factor(c("A","8.9")))
and read the R Intro manual (chapter 4).
Berend
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