at1$bb * 5 #works
> ddat2$bb * 5 # error!
>
>
> They look the same on the computer screen but they are quite different.
>
> John Kane
> Kingston ON Canada
>
>
>
> >
> > Thanks
> >
> >
> >
> > 2015-04-20 18:40 GMT+02:00 Sarah Goslee :
Thank you very much Sarah
2015-04-20 19:05 GMT+02:00 Sarah Goslee :
> On Mon, Apr 20, 2015 at 12:56 PM, Sonia Amin wrote:
> > Sorry Sarah for my basic question: what does "a column was read as
> factor"
> > mean?
>
> A factor is one of the basic typ
.
>
> Sarah
>
> On Mon, Apr 20, 2015 at 12:33 PM, Sonia Amin wrote:
> > Dear All,
> >
> > I have written the following lines:
> >
> >
> data<-read.table("C:\\Users\\intel\\Documents\\SIIID\\datamultiplereg.txt",header
> > = FALSE,
Dear All,
I have written the following lines:
data<-read.table("C:\\Users\\intel\\Documents\\SIIID\\datamultiplereg.txt",header
= FALSE, sep = "")
colnames(data)<-c("Consommation","Cylindre","Puissance","Poids")
result.model1<-lm(Consommation~Cylindre+Puissance+Poids, data=data)
summary(resul
ok I am sorry
2012/11/16 Hasan Diwan
> Ms Amin,
>
> On 16 November 2012 14:06, Sonia Amin wrote:
>
>> I have attached the file ven.csv
>
>
> Attachments don't come through on the mailing list. Please enclose the
> first few lines in your message. --
ui Barradas
> Hello,
>
> The error message is not at all clear. Have you copied and pasted it?
> Can you post a data example? Using ?dput, for instance.
>
> dput(head(mat, 30)) # paste the output of this in a post
>
> Rui Barradas
>
> Em 16-11-2012 21:44, Soni
Rui and Berend thank you for your help
before posting this mail, I change the name of my data and it becomes "mat" and
I tried with this line:
lm (ve~ su, data = mat)
I got this message:
Lm.fit error in (x, y, offset = offset = singular.ok singular.ok ...)
[[alternative HTML version del
Dear friends,
I have a csv file entitled ven.csv located in C:\\, this file contains only
two columns:"ve" and "su" I have written the following lines:
data=read.csv("c:\\ven.csv",header=TRUE,sep=";");
lm(ve~ su)
I have obtained the following message:
Error in eval(expr, envir, enclos) : object
Dear friends,
I have written the following lines in R console wich already exist in pdf
file systemfit:
data( "GrunfeldGreene" )
library( "plm" )
GGPanel <- plm.data( GrunfeldGreene, c( "firm", "year" ) )
greeneSur <- systemfit( invest ~ value + capital, method = "SUR",
+ data = GGPanel )
greenSur
Dear friends,
I have written the following lines in R console wich already exist in pdf
file systemfit:
data( "GrunfeldGreene" )
library( "plm" )
GGPanel <- plm.data( GrunfeldGreene, c( "firm", "year" ) )
greeneSur <- systemfit( invest ~ value + capital, method = "SUR",
+ data = GGPanel )
greenSur
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