[R] using read.csv2()

[Voirin Pascale]

Hello,

I have a problem with the variable type defined by reading a csv file with read.csv2.

Here is a test file saved as < test.csv > :
var1;var2;var3
TI;1995;4.5
VD;1990;4.8
FR;1994;3.9
VS;1993;5.1
FR;1995;4.7
FR;1992;5.8

That  I read in R with :
read.csv2("test.csv")->don;don
don$var3
## [1] 4.5 4.8 3.9 5.1 4.7 5.8
## Levels: 3.9 4.5 4.7 4.8 5.1 5.8

as.double(don$var3)
## [1] 2 4 1 5 3 6

Why is it by default a <levels> type ? And how can I get  the decimal value for var3

Thanks a lot for your answer.
With my best regards,

Pascale Voirin

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