similar to: Create variables with common values for each group

Hi dears, I expect that Mr Thomas Lumley will read this message. I have data from a complexe stratified survey. The population is divide in 12 regions and a region consist to and urban area and rural one. there to region just with urbain area. stratification variable is a combinaison of region and area type (urban/rural) In rural area, subdivision are sample with probabilties proporionnal to

Hi All - I am using the daisy function from the cluster library to create a dissimilarity matrix. I'm going to use that matrix to run a cluster analysis. My participants are identified with the variable, hhid. However, when I try to keep hhid in the dataset that I use to create the dissimilarity matrix, daisy uses it to create the matrix rather than ignoring it as an ID variable. I need to

Dear all, I was wondering whether anyone knows about a program which converts (part of) a data definition file (such as a .dct file for stata, or .sas file for sas) into an R-script. Here is an example with a .sas file: <-- snipp VALUE HTYPE (default=32) 0 = "Not in household" 1 = "Married couple family household" 2 =

Dear all, I'm running a self-written numerical optimization routine (hazard model) which includes computing the inverse of the outer product of the score. I have been getting the above error message ("System is computationally singular"), and after some tweaking, I realized that these variables have some high numbers and the problem could be circumvented by scaling them down (i.e.

Dear all, I have a simple question which I unfortunately do not seem to be able to solve myself. I have a (NxK) matrix and want to generate a new matrix by multiplying each row with itself such that the new matrix has dimension ((N*K)xK) (or better, generate an array with dimension (K,K,N)). I tried apply, but that did not work. Any suggestions? Thanks! Stephan ## Here is a simple

Dear all, I have a code where I subset a data frame to match entries within levels of an factor (actually, the full script uses three difference factors do do that). I'm very happy with the precision with which I can work with R, but since I loop over factor levels, and the data frame is big, the process is slow. So I've been trying to speed up the process using by(), but I got stuck at

Hello ! I am attempting to switch from being a long time SAS user to R, and would really appreciate a bit of help ! The first thing I do in getting a large dataset (thousands of obervations and hundreds of variables) is to run a SAS command PROC CONTENTS VARNUM command - this provides me a table with the name of each variable, its type and length; then I run a PROC MEANS - for numerical

Dear all, A quick question which I somehow cannto figure out: I want to apply the function "any" to subsets of a dataset in order to create a vector with TRUE/FALSE values, depending on whether a subset has the number 5. I.e., y <- matrix(c(1,2,3,3,4,5,5,6,6,7,5,1,1,3,5,NA,5,1,1,3),ncol=2) > y [,1] [,2] [1,] 1 5 [2,] 2 1 [3,] 3 1 [4,] 3 3 [5,]

Dear all, I'm trying to import a csv file into sqlite3 and from there into R. Everything looks fine exepct that R outputs the character values in an odd fashion: they are shown as "\"CHARACTER\"" instead of "CHARACTER", but only if I show the character variable as a vector. Does someone know why this happens? Below is a sample code. The first part is written in

I am trying to estimate multinomial logit models off of a .csv table in IDCASE IDALT format where I have ROWS HHID PERID CASE ALTNUM NUMALTS CHOSEN IVTT OVTT TVTT COST DIST WKZONE HMZONE RSPOPDEN RSEMPDEN WKPOPDEN.... 1 1 2 1 1 1 5 1 13.38 2.00 15.38 70.63 7.69 664 726 15.52 9.96 37.26 2 2 2 1 1 2 5 0 18.38 2.00

Dear expe-R-ts, I try some test data for a factorAnalysis (resp. pca) in the sense of Prof. Ripley's MASS ? 11.1, p. 330 ff., just to prepare myself for an analysis of my own empirical data using R (instead of SPSS). 1. the data. ## The test data is (from the book of Backhaus et al.: Multivariate ## Analysemethoden. Springer 2000 [9th ed.], p. 300 ff):

i was using multiple ports because that's how i figured i'd have to do it. o, mounting the remote source locally? i'm not familiar with how to do this. i'm also not seeing how to do this in the docs. how would i go about mounting a remote stream? -a.j. On Fri, 27 Apr 2001, Jack Moffitt wrote: > Why are you using multiple ports at all? That's what mountpoints are >

Dear all, just a quick question regarding weights in logistic regression. I do results <- lrm(y.js ~ h.hhsize + h.death1 + h.ill1 + h.ljob1 + h.fin1 + h.div1 + h.fail1 + h.sex + h.ch.1

heya... i'm extremely new to the list (10 minutes), and i have a burnin' question that i was hopin' you folks could help me out with. i'm running beos as an encoder box, with two streams (8000 and 8001) hosted on it. the idea is to use my redhat box to relay those streams to the public using icecast, allowing the be machines cpu cycles to focus solely on encoding. anyway, i

Hi. I'd like to find some way for Samba to convert the filenames created by Macintosh OS X into something windows can use. According to their docs: http://developer.apple.com/techpubs/macosx/Essentials/SystemOverview/FileSystem/chapter_9_section_13.html filenames are stored as canonically decomposed Unicode 2.1 in UTF-16 format (a sequence of 16-bit codes) Samba running on a

Hello, markdown (Python implementation) seems to render:  to <img src="pfad/und/eine" title="lange/url zum bild.jpg" alt="alternativer text"/> breaking the URL at the whitespace. AFAIK whitespaces are ok in URLs so why is it breaking up the URL here? Thanks, Florian -- I'm using an

Hi, I'd like to run a win-prog with Linux but it fails: Runtime Error - abnormal program termination. In the console I get the following infos: fixme:ole:CoCreateInstance no classfactory created for CLSID {48071bd8-a9f0-11d0-954b-00a0c911760e}, hres is 0x80040154 fixme:ole:MSFT_ReadValue BSTR length = -1? fixme:ole:ITypeLibComp_fnBind (L"Now", 10ba25, 0x3, 0x406ef200,

Hello, some questions regarding btrfs deduplication. - What is the state of it? Is it "safe" to use? https://btrfs.wiki.kernel.org/index.php/Deduplication does not yield much information. - https://pypi.python.org/pypi/bedup says: "bedup looks for new and changed files, making sure that multiple copies of identical files share space on disk. It integrates deeply with btrfs so

Hello, I need to to slightly extend the markdown syntax. (place an image (img tag) in text which URL has not yet been determined). Therefore I want to define something like $[Alt text](img.jpg) which would be replaced by my pre-processor with  and then sent to markdown. Is there any special syntax that should be used for such 3rd party extensions? How would you do

Hi everyone, I would like to compute the sum of cross products of rows of a matrix. Does anyone know how to do this without an explicit loop for computational efficiency? Below is a code example. Thanks! Stephan # I.e., if I have a matrix like this x <- matrix(rep(c(1,2,3),3),ncol=3) ## > x ## [,1] [,2] [,3] ## [1,] 1 1 1 ## [2,] 2 2 2 ## [3,] 3 3