similar to: rpart confidence intervals?

How can I automatically exclude one variable from being saved in the workspace when I quit an R session? The problem is I don't know how to erase a variable once it has been created. Background: I open a connection called "con" to a database server in my ~/.Rprofile. Obviously, the connection expires when quitting the R session. Unfortunately, the workspace is loaded after

Hi R, A simple question, but don't know the answer... x="a" a=5 I need to remove the object "a" by using only x. something like rm(somefunction(x))...Is this possible? Shubha Karanth | Amba Research Ph +91 80 3980 8031 | Mob +91 94 4886 4510 Bangalore * Colombo * London * New York * San José * Singapore * www.ambaresearch.com This e-mail may contain

Hello, A newbie to R. I am trying to use the exonmap package in R. According to the docs, the xmapDatabase() command should read the config file with all the connection parameters and connect to the DB. But i get the error shown below.... > xmapDatabase("Human") Error in mysqlNewConnection(dbDriver(drv), ...) : RS-DBI driver: (could not connect cagadmin at mysql2.cag.chop.edu on

Dear all, sorry for this very basic question, but I did not find any good example yet. I would like to set up a variable that can be recall later to substitute a part of a file name. As example: var_filename = as.name("aaa") jpeg("var_filename.jpg") plot() dev.off() It would be very useful in order to avoid to change manually many strings. I guess it is possible, but I did

I can't figure this one out- I am the administrator, The file that I want to install is a .tar.gz which is located on my desktop. How do I get it into my packages directory- through the GUI or through brute force? thanks stephen -- Let's not spend our time and resources thinking about things that are so little or so large that all they really do for us is puff us up and make us feel

Hi everybody, I am currently working with R and I would like to create jpeg graphs with it. I am working on Windows and Unix but I would like to be able to create graphs (jpeg, png, bitmap...) under Unix. I am working on Solaris version 8. The documentation for R states that the latest version of or R known to compile on Solaris 8 is version 2.6.2. I have been able to compile and install R

Hi Is it possible to subset an n-dimensional array by a vector of n dimensions? E.g. assume I have > x <- array(1:24, dim=2:4) > x[1,1,2] [1] 7 > dims <- c(1,1,2) I would like a function that I can supply x and dims as parameters to, and have it return 7. Also, I would like to do something like: > x[1,1,] [1] 1 7 13 19 > dims2<- c(1,1,NA) And have a function of x and

Dear R Users; I am an R user who has recently bought a new laptop;Toshiba Satellite U405 running on both Windows Vista and Ubuntu. I have problems on the wondows vista when installing packages. The argument 'lib' is missing. How do i solve this problem? Illustration: > install.packages("epicalc") Warning in install.packages("epicalc") : argument 'lib'

Hi R, I need to generate 50 random numbers (preferably poisson), such that their sum is equal to 100. How do I do this? Thank you, Shubha This e-mail may contain confidential and/or privileged i...{{dropped:13}}

This is a bug apparently caused by Windows XP's interaction with R. I was getting an error message when running C:\Program Files\R\rw1081\bin\Rgui.exe. Odly enough, his problem was happening only when I was not connected to the network using my ethernet connection. Using Google, I found the same error described on a thread (see attached) as: > The R installation is fine on Windows XP,

Hello As a postgrad I have been helping an undergraduate student with R coding but she has a problem with R studio on her laptop which I can't fix - basically when she runs a plot it appears without a y axis label with the black line plot frame hard against the plot window and the bottom of the plot, where you would expect to see the horizontal axis and the x axis label etc is completely

Hi guys, It would be great if you could help me with this one... I'm looking to create a script to convert a matrix of species abundance e.g: <http://r.789695.n4.nabble.com/file/n4643978/species_matrix.jpg> into two vectors e.g: <http://r.789695.n4.nabble.com/file/n4643978/communitylist.jpg> ---------------- If you feel there is no easy answer to this and that it would be

I have a statistical problem which has given me no end of grief recently, and am posting here in the hope that somebody can give me a straight answer. I'm a IT postgrad, not a statistician, so people may have to speak really slowly and clearly for me to get it :) I am collecting simulation data, and the results are geometrically distributed (or approximately so). From what I can gather

Hi I'm a postgrad in ecology, and have recently started to use R. I'm planning to model various sets of animal abundance (i.e. count) data in relation to habitat data using glm's and/or glmmPQL's. However, some of my potential response variables have many zeros. From what I gather the "family = ..." option in the command line does not allow for the direct

(Sorry for the slightly off topic post) I'm giving a talk (on data mining) to some non-statisticians (who're all postgrad students, but a mixture of Science and Commerce majors). My intention is to show them the importance of statistics when doing data mining. What I'm thinking of doing is using, hopefully, two datasets. One from scientific area and another that is

I have R version 2.9.1 on my computer and the anlaysis is not working because I need to update to R version 2.12.0 the latest release. The person incharge of IT tried to download R version 2.12.0 but .exe file referenced in install isn't there - What might we be doing wrong? We have downloaded as tar.gz, uncompress then look for .exe file but not present. Many thanks, Morris

Dear Spencer and Prof. Fox, Thank you for your replies. I'll very appreciate, if you have any ideas concerning the problem described below. First, I'd like to describe the model in brief. In general I consider a model with three equations. First one is for annual GRP growth - in general it looks like: 1) GRP growth per capita = G(investment, migration, initial GRP per

Hi, I''ve had several people ask me about a comment I made in a previous post; <quote> Dan, firstly, if you haven''t touched the compromised system much, do a "dd" across the raw disk and grep it for log fragments. I have seen vital erased logs recovered this way before! </quote> I shall try and explain a bit more! If an attacker erases, or truncates a

Dear colleagues can somebody help me by showing how we can compute m-estimators in R? thanks Dr. Iasonas Lamprianou Assistant Professor (Educational Research and Evaluation) Department of Education Sciences European University-Cyprus P.O. Box 22006 1516 Nicosia Cyprus Tel.: +357-22-713178 Fax: +357-22-590539 Honorary Research Fellow Department of Education The University of Manchester

Hello again, There is any package which does Z aware (real 3D) interpolations? It can be any method (IDW, kriging or spline) but it should take into consideration not only x and y coordinates for interpolation, but also z coordinate. I looked into different packages but it seems i didn't find the right one. The ultimate goal is to import the output into a GIS (Geographical Information