Bruce Willy wrote:> Hello,
>
> I have imported data from Excel using the command
> cours=read.delim("w:/apprentissage/cours_2.txt")
> after transforming my initial file with tab delimiters
>
> It seemed to work
>
> It is 2-dimensionnal. When I type cours[5,5],
> I get this type of message : "[1] 0,9760942761824 Levels: 0,495628477
0,893728761 0,89640592 0,903398558 ... 3,864414217"
> And when I want to multiply it, for example by 2 (cours[5,5]*2), I get :
"Warning message:* ceci n'est pas pertinent pour des variables facteurs
in: Ops.factor(cours[5, 5], 2)"
> i.e. approximately "this is not relevant for factor variables.
>
> What can I do if I want to manipulate my variables ?
>
> Thank you very much
You might try the following:
cours <- read.delim("w:/apprentissage/cours_2.txt",
dec=",")
See the "dec" argument on the help page for read.delim().
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