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Hello: Are there any libraries that will do a subset selection for glm's? I looked through leaps, but seems like it is specifically for linear regressions. Thank you. -Dhiren

I need to generate 100 I.I.D samples from an exponential distribution. I use rexp(100,parameter). Is there anyway to specify a seed to determine the first input for the uniform random number generator used to generate these...

Hello: I have a matrix 'dat' with 2 columns. I have the following code: for (i in 1:nrows(dat)) { if (dat[i,1] < dat[i,2]) { dat[i,2]<-0 } else { dat[i,2]<-1 } Is there a way...

How can I split a dataset randomly into a training and testing set. I would like to have the ability to specify the size of the training set and use the remaining data as the testing set. For example 90...

I posted a message earlier about subset selection. I have a data set with 50 variables x1, x2, .... x50 x50 is a binary response variable that I would like to predict. Is there a library I could use to do...

I have a string '982323.1' and would like to replace everything after the '.' with a '41'. So the string should look like '982323.41'. The code I use to do this is sub('\.$','41',982323.1) This works fine...

I have a dataset with transactions and a timestamp at which they occoured during a day. The time stamp is in the format YYYY/MM/DD hh:mm:ss. I would like to plot a timeseries of the transactions to...

Hi: I am extremely new to linux so bare with the questions. I am trying to install the SJava package for R on linux (debian). I issue the R CMD INSTALL SJava_0.68-0.tar.gz and get the...

Hi all: How does one read in an mps file and store it in a matrix as is. I have pasted the format of the file. I have implemented an mps writer but would like to have the capability to...

Thank you both :) -Dhiren From: Gabor Grothendieck <ggrothendieck at gmail.com> Reply-To: Gabor Grothendieck <ggrothendieck at gmail.com> To: Uwe Ligges <ligges at statistik.uni-dortmund.de> CC: Dhiren DSouza <dhiren22 at hotmail.com>, r-help at stat.math...