[R] lasso cross-validation

Dear all, I am using cv.glmnet in r and I have the following question: The default is 10-fold cross-validation, but it is not clear to me how many times are repeated? Is it 50 repeats? I am sore if me question will be very easy for some people! Many thanks in advance, Samuel

[R] glm

Dear all, I am using glm with quasibinomial. What does the following error message mean: Error in eval(expr, envir, enclos) : y values must be 0 = y = 1 Does it mean that the predictor variable should only have zero and one or it is also possible to have continuous values between zero and one?

[R] UniCox in R

Hello, I am interested in Figure 2 in http://www-stat.stanford.edu/~tibs/ftp/cus.pdf Can anyone tell please how to create this plot? Many thanks Samuel [[alternative HTML version deleted]] __ R-help@r-project.org mailing list

Re: [R] UniCox in R

holtman jholt...@gmail.com wrote: From: jim holtman jholt...@gmail.com Subject: Re: [R] UniCox in R To: Samuel Okoye samu...@yahoo.com Cc: r-help@r-project.org Date: Wednesday, 8 December, 2010, 5:25 Do a little reading on how to use the graphics commands.  I would look at plot lines segments

[R] AUC

Hello, Is there is any R function computes the AUC for paired data? Many thanks, Samuel [[alternative HTML version deleted]] __ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting

Re: [R] glm

, 22/6/10, Joris Meys jorism...@gmail.com wrote: From: Joris Meys jorism...@gmail.com Subject: Re: [R] glm To: Samuel Okoye samu...@yahoo.com Cc: r-help@r-project.org Date: Tuesday, 22 June, 2010, 9:50 On Tue, Jun 22, 2010 at 1:00 AM, Samuel Okoye samu...@yahoo.com wrote: Hi, I have the following

[R] glm

Hi, I have the following data data1 - data.frame(count = c(0,1,1,2,4,5,13,16,14), weeks = 1:9,     treat=c(rep(1mg,3),rep(5mg,3),rep(10mg,3))) and I am using library(splines) to fit glm.m - glm(count~bs(weeks)+as.factor(treat),family=poisson,data=data1) and I am interested

[R] Power calculation

Hello, Is there any R function which does power calculation for unbalanced groups (n1 neq n2)? Since power.t.test has n Number of observations (per group). Many thanks, Samuel [[alternative HTML version deleted]] __

[R] Problem with library(SSPA)

Hello, I have the fellowing problem and I am thankful for any advice! Regards, Samuel    source(http://bioconductor.org/biocLite.R;) BioC_mirror = http://www.bioconductor.org Change using chooseBioCmirror(). biocLite(SSPA)

Re: [R] Problem with library(SSPA)

I can't find his email and I have asked the same question to bioconduc...@stat.math.ethz.ch Regards, Samuel --- On Wed, 9/6/10, Uwe Ligges lig...@statistik.tu-dortmund.de wrote: From: Uwe Ligges lig...@statistik.tu-dortmund.de Subject: Re: [R] Problem with library(SSPA) To: Samuel Okoye samu

Re: [R] Problem with library(SSPA)

) To: Samuel Okoye samu...@yahoo.com Cc: r-help@r-project.org Date: Wednesday, 9 June, 2010, 6:43 On 09.06.2010 15:19, Samuel Okoye wrote: I can't find his email   packageDescription(SSPA) and I have asked the same question to bioconduc...@stat.math.ethz.ch Regards, Samuel --- On Wed, 9

[R] simulation of censoring data

Dear all, I would like to understand the effect of censoring in a linear model therefore I am doing the following    n - 20  cen - sample(x=c(0,1), size=n-1, replace=TRUE, prob=c(0.8,0.2))  cen - c(cen,0)  x - rnorm(n,0,1)  tt - -1+x+log(-log(1-runif(n)))+0.5767  y - c()  for(i in 1:n){     y[i]

[R] variation in one variable

, Samuel Okoye samu...@yahoo.com wrote: From: Samuel Okoye samu...@yahoo.com Subject: SVM To: r-h...@stat.math.ethz.ch Date: Thursday, September 17, 2009, 4:39 AM Hello, I have 12 sample each sample has got 1000 observation, i.e I have a matrix X with 1000 rows and 12 columns! m - svm(t(X)) p

Re: [R] SVM

TRUE samples in group A and FALSE samples in group B? Best wishes, Samuel PS: I will not give up to understand statistics! --- On Thu, 9/17/09, Steve Lianoglou mailinglist.honey...@gmail.com wrote: From: Steve Lianoglou mailinglist.honey...@gmail.com Subject: Re: [R] SVM To: Samuel Okoye samu

[R] SVM

Hello, I have 12 sample each sample has got 1000 observation, i.e I have a matrix X with 1000 rows and 12 columns! m - svm(t(X)) p - predict (m) Can anyone tell me how to use svmtrain() in R! Many Yhanks, Samuel [[alternative HTML version deleted]]

Re: [R] SVM

mailinglist.honey...@gmail.com wrote: From: Steve Lianoglou mailinglist.honey...@gmail.com Subject: Re: [R] SVM To: Samuel Okoye samu...@yahoo.com Cc: r-h...@stat.math.ethz.ch Date: Thursday, September 17, 2009, 8:36 AM Hi, On Sep 17, 2009, at 7:39 AM, Samuel Okoye wrote: Hello, I have 12

[R] ANCOVA

Hello,   Could you please help me in the following question: I have 16 persons 6 take 0.5 mg, 6 take 0.75 mg and 4 take placebo! Can I use the ANCOVA and t-test in this case? Is it possible in R?   Thank you in advance, Samuel [[alternative HTML version deleted]]

[R] SAS data

Hello, I am trying to read the SAS file MyData.sa7bdat in R! This file is saved under D:\data! I therefore wrote path -D:/SasData sashome - C/Progra, Files/SAS Institute/9_1/SAS sascmd - file.path(sashome, sas.exe) MyData - read.ssd(path, MyData, sascmd=sascmd) The

[R] problem with times

Hello, I have got the following problem: times - c(02.07.2007, 03.07.2007,03.09.2007, 04.07.2007,05.07.2007) mode(times) [1] numeric tim - as.character(times) mode(tim) [1] character sort(times) [1] 02.07.2007 03.07.2007 03.09.2007 04.07.2007 05.07.2007 Is it possible to get