[R] Error with KNN

Hi all I receive this error message: “Error in mymodel$MSE : $ operator is invalid for atomic vectors” When I use KNN. This is the code: library(e1071) train <- rbind(iris3[,,1], iris3[,,2], iris3[,,3]) cl <- factor(c(rep("s",50), rep("c",50), rep("v",50))) knn.cv(train, cl, k = 3, prob

Re: [R] Error with KNN

e > To: nancyada...@hotmail.com > CC: r-help@r-project.org > Subject: Re: [R] Error with KNN > > > > On 20.02.2010 19:10, Nancy Adam wrote: > > > > > > > > Hi all > > > > I receive this error message: “Error in mymodel$MSE : $ operator is inval

[R] read dataset in R language.

Hi, Could you please help me in solving the following error message: Error in `[.data.frame`(mytestdata, fp_temp == 1) : undefined columns selected when I use scan instead on read.table, I reicieve this message: Error in names(ret2) <- rowns : 'names' attribute [172] must be the same

[R] read dataset in R language.

Hi all, Could you please help me in solving the following error message: Error in `[.data.frame`(mytestdata, fp_temp == 1) : undefined columns selected when I use scan instead on read.table, I reicieve this message: Error in names(ret2) <- rowns : 'names' attribute [172] must be the same

Re: [R] read dataset in R language.

colon. > Try > > train = read.csv('trainingset.txt',check.names=FALSE) > test = read.csv('testset.txt',check.names=FALSE) > > - Phil Spector > Statistical Computing Facility > Department of Statistics > UC Berkeley > spec...@stat.berkeley.edu > >

[R] Read dataset in R language.

Hi all, Thanks for the explanation I got other datasets that are already used with others but I got the same errors: “undefined columns selected” I attach the datasets with this email and this is the command I’m trying: train = read.csv("trainingset.txt",check.names=FALSE) test = read.csv("test

Re: [R] Read dataset in R language.

Hi all, I tried many things to read any dataset but I receive different error messages every time. One new message is: vector size specified is too large Can any one please send any part from any dataset just for testing a regression system and to know where is the problem?? Many thanks, N

[R] svm regression/classification

Hi everyone, Can anyone please tell whether there is a difference between the code for using svm in regression and code for using svm in classification? This is my code for regression, should I change it to do classification?: train <- read.table("trainingset.txt",sep=";") test <- read.

[R] R2

Hi everyone, I tried to write the code of computing R2 for a regression system but I failed. This is the code I use for computing RMSE: my_svm_model <- function(myformula, mydata, mytestdata) { mymodel <- svm(myformula, data=mydata) mytest <- predict(mymodel, mytestdata

Re: [R] svm regression/classification

Dec 2009 10:36:36 -0500 > Subject: Re: [R] svm regression/classification > From: mailinglist.honey...@gmail.com > To: nancyada...@hotmail.com > CC: r-help@r-project.org > > Hi Nancy, > > Comments in line: > > On Sun, Dec 27, 2009 at 3:34 AM, Nancy Adam wrote: >

Re: [R] R2

ecatedʼ but is not actually > mentioned on that page. Even though it has been deprecated in S > for 20 years, it is still accepted. > > I added that note in May 2008 (and it is not intended to be a > reference to current versions of S-PLUS, since we cannot keep checking > that,

[R] Squared correlation error

> > for many years. It appears as an index entry in Becker _et al_ > > (1988), pointing to the help for ʽDeprecatedʼ but is not actually > > mentioned on that page. Even though it has been deprecated in S > > for 20 years, it is still accepted. > > > > I added that not

[R] Questions bout SVM

Hi everyone, Can someone please help me in these questions?: 1)if I use crossvalidation with svm, do I have to use this equation to calculate RMSE?: mymodel <- svm(myformula,data=mydata,cross=10) sqrt(mean(mymodel$MSE)) But if I don’t use crossvalidation, I have to use the foll

Re: [R] Questions bout SVM

odel will use only the last column on the testing set?Many thanks,Nancy > Date: Sat, 2 Jan 2010 17:32:44 -0500 > Subject: Re: [R] Questions bout SVM > From: mailinglist.honey...@gmail.com > To: nancyada...@hotmail.com > CC: r-help@r-project.org > > Hi, > > On Fri

[R] e1071 package

hi all, I’m trying to install e1071 package to a new computer but I failed. Can any one please tell me how I download it without installing through R? can anyone please send it as an attachment please? Many thanks, Nancy