Thank you, it works now
I'm sorry, I have worked all year with R but with simulated data (except one
time actually)> Subject: RE: [R] Import from excel> Date: Wed, 27 Jun 2007
10:01:51 -0400> From: [EMAIL PROTECTED]> To: [EMAIL PROTECTED]> > cours is a
dataframe not a matrix. Try:> > cours[2,]*cours[5,]> > -----Original
Message-----> From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of
Bruce Willy> Sent: Wednesday, June 27, 2007 9:44 AM> To: Chuck Cleland> Cc:
r-help@stat.math.ethz.ch> Subject: Re: [R] Import from excel> > > Thank you,
but it still doesn't work completely> > Thanks to you and the "dec=","" option,
I can now do cours[5,5]*5 and get the exact value> > But I still cannot do
matrix operations like cours[2,]%*%cours[5,]> > It says the arguments are
neither matrix nor vectors.> > :(> Date: Wed, 27 Jun 2007 09:30:32 -0400> From:
[EMAIL PROTECTED]> Subject: Re: [R] Import from excel> To: [EMAIL PROTECTED]>
CC: r-help@stat.math.ethz.ch> > 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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______________________________________________> > R-help@stat.math.ethz.ch
mailing list> > https://stat.ethz.ch/mailman/listinfo/r-help> > PLEASE do read
the posting guide http://www.R-project.org/posting-guide.html> > and provide
commented, minimal, self-contained, reproducible code.> > -- > Chuck Cleland,
Ph.D.> NDRI, Inc.> 71 West 23rd Street, 8th floor> New York, NY 10010> tel:
(212) 845-4495 (Tu, Th)> tel: (732) 512-0171 (M, W, F)> fax: (917) 438-0894
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