[R] Import from excel

[Chuck Cleland]

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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Chuck Cleland, Ph.D.
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