similar to: How to create a new variable based on parts of another character variable: A generalization

Ein eingebundener Text mit undefiniertem Zeichensatz wurde abgetrennt. Name: nicht verf?gbar URL: <https://stat.ethz.ch/pipermail/r-help/attachments/20111023/ae046d6a/attachment.pl>

Dear colleagues. I wonder if anybody knows about a procedure in R to calculate the Brillouin Diversity index. I searched the net but did not find anything about it. Thanks a lot for any help Best, Philipp *************************************************** Prof. Dr. Philipp Fischer Head of AWI Center for Scientific Diving & Dept. In situ Ecology Section Shelf Sea Systems

Dear all, I need to do the same procedure on several files. But I don't know how to refer to the file name. Here is an example of what I am trying to do. List of files: file1(A,B,C, D1...Dn), file2(A,B,C,E1,...,En), file3(A,B,C,F1,...,Fn) Procedure I want to apply on each file: dft <- melt(df,id=c('A','B','C')) dft$X <- substr(dft$variable,1,3) dft$Y <-

Hi all, I'm working to apply a function that will generate a matrix of results only when a specific criteria is met. I want my final results to be a matrix with both the values that meet the criteria (the results of the function), and those that to do in the same positions in the matrix (the original numbers). Here's a sample of what I would like to do: t.mean.1.c <- c(-15, -20,

Dear List, Does anyone know how to simulate data from a GLM object correponding to values of the independent (x) variable that do not occur in the original dataset? I have tried using simulate(), but it generates a new value of the dependent variable corresponding to each of the original x-values, which is not what I need. Ideally I whould like to simulate new values for GLM objects

Greetings! I've got a samba server that's serving Windows and Mac clients. I want to restrict the [homes] share such that users can *only* connect to their own home directory, and not make read-only connections to other people's home directories. For example, on a Mac, if I connect to my Samba server with: smb://servername/bbonds and then authenticate myself as:

Dear all, I am trying to validate a model by comparing simulated output values against observed values. I have produced a simple X-y scatter plot with a 1:1 line, so that the closer the points fall to this line, the better the 'fit' between the modelled data and the observation data. I am now attempting to quantify the strength of this fit by using a statistical test in R. I am no

Greetings R Users! I am posting to inquire about the proximity matrix in the randomForest R-package. I am having difficulty pushing very large data through the algorithm and it appears to hang on the building of the prox matrix. I have read on Dr. Breiman's website that in the original code a choice can be made between using an N x N matrix OR to increase the ability to compute large

with CVS as of an hour ago i'm seeing corruption of messages (in an mbox) with an empty message body. for example, here's what i have in my test INBOX right after receiving the empty message: --- top of INBOX --- >From dean at arctic.org Tue Nov 25 19:02:23 2003 Return-Path: <dean at arctic.org> Delivered-To: dgtest at arctic.org Received: (qmail 3626 invoked by uid 500); 26

Hi, everyone, I haven't found anything similar in the forum, so here's my problem (I'm no expert in R nor statistics): I have a data set of 59.000 cases with 9 variables each (fractional coverage of 9 different plant types, such as deciduous broad-leaved temperate trees or evergreen tropical trees etc.), which was generated by a vegetation model. In order to evaluate the quality of

Dear all, I get an error message when I run my model and I am not sure what to do about it. I try to determine what factors influence the survival of voles. I use a mixed-model because I have several voles per site (varying from 2 to 19 voles). Here is the model: ### fm5 <-lmer(data=cdrgsaou2, alive~factor(pacut)+factor(agecamp)+factor(sex)+ResCondCorp+(1|factor(cdrgsa ou2$ids)),

Hi there I hope that I am in the right forum. I am working on Win2000 PC connected via Exceed 6.0.1.0 to a SunOS fluke 5.9 Generic_118558-11 sun4u sparc SUNW,Sun-Fire-480R There I am using Mozilla Firefox 1.0.7 as a browser. I am having difficulties viewing .html files. Their first pages are displayed normally, black on white, links in blue. When I scoll down, the pages appear black

Greetings! I'm have a hard time working with some data I imported from a baseball database. Several of the database columns have numbers in them (2B, 3B), and when I try to use these vectors from the data frame, I get syntax errors, probably because it's interpreting the name as a number: > show(batting2005) playerID yearID stint teamID lgID G AB R H 2B 3B HR RBI SB CS BB

Dear list, I am relatively new to ordinal models and have been working through the example given by Frank Harrell in the predict.lrm {Design} help All of this makes sense to me, except for the responses, i,e how do i interpret them? i would be extremely grateful if someone could explain the results? First i establish the date and model - > y <- factor(sample(1:3, 400, TRUE), 1:3,

Hi, This may belong more to r-develop, but general discussion may be useful (for the how many-th time ?) seq(2,5,-2) seq(5,2,2) both result in Error in seq.default(2, 5, -2) : wrong sign in 'by' argument But often, if not always, mathematicians and programmers want a behaviour e.g. in for loops, where this statement results in an empty statement, that is for (ii in seq(2,5,-2))

Hi, Sorry to bother, but I checked around and did not succed creating a bundle from six existing packages (which are checkable, installable, etc. individually). I carefully followed the procedure given in ch. 1.1.5 Package bundles. However, I am getting hoffmann at fluke:~/R/Sources >R CMD check cwhmisc * checking for working latex ... OK * using log directory

Hi, I'm installing rgdal but I keep having failures because I have not been able to find a good source of information for the correct configuration settings when installing GDAL. My error from the R install.packages("rgdal") is below. Can someone point me to a good source to tell me how to set after ./configure when installing GDAL? I'd like to be able to work with raster

Greetings! I am trying plot some data on a map in R. Here's the scenario. I have a variable called probworkinghealthy which contains a predicted probability of employment for every individual in my sample (about 100,000 observations). I have another variable, called a001ter, which contains the subject of residency in the Russian Federation (akin to a US state) for every individual in the

I currrently have Asterisk 1.2.8 with a TE110P Zaptel card tied to our Nortal DMS-10 switch via T1. This T1 trunk is configured for Feature Group D MF. The purpose of this is for LD delivery to a VoIP LD provider as a LD choice for our customers off of the DMS-10. When I sieze a channel on the zaptel, I get a spill of digits from the switch that is the called number, and I can see that in

Hello, I'm trying to develop a box plot of time series data to look at the range in the data values over the entire period of record. My data initially starts out as a list of hourly data, and then I've been using this code to make this data into the final ts array. # Read in the station list stn.list <- read.csv("/home/kbennett/fews/stnlist3", as.is=T, header=F) # Read in