similar to: Job notice at the University of Washington

Dear R Users, I want to write a function that applies to the dataframe and variables that were used in a previous call to lm or aov. In order to do this, I need to write a function that applies to the output of lm or aov, and yields the names of the dataframe and variables that were used in the lm or aov analysis. For example, suppose that I give the command: aov.out <- aov( Rt ~

Dear R Help, I am trying to create a boolean vector that is TRUE whenever a particular value occurs in a numeric vector, and FALSE otherwise. For example, suppose that > y <- c(5, 2, 4, 3, 1) > y [1] 5 2 4 3 1 and suppose that I want to find where 3 occurs in y. Then, the following yields the solution: > y == 3 [1] FALSE FALSE FALSE TRUE FALSE My problem arises when the

I have run into a general problem with subsetting of which the following is a simple example. Suppose that x <- c(5, NA, 7, 5, NA, 3) y <- c(1, 2, 3, 4, 5, 6) I want to extract the values of y for which x = 5, but y[x==5] yields > y[x==5] [1] 1 NA 4 NA I find that y[!is.na(x) & x==5] yields the desired result: > y[!is.na(x) & x==5] [1] 1 4 but I am wondering whether

Dear R-Help, I'm using R version 1.6.0 on a Windows computer. I am trying to create a function that, among other things, constructs strings that refer to Windows files, e.g., I might want to construct a string like 'c:\work\part1.txt'. I have found that the following does not work. > paste("c:", "\", "work", "\", "part1.txt",

Dear R-Help, Suppose I have a character matrix, e.g., (ch.mat <- matrix(c('a','s','*','f','w','*','k','*','*','f','i','o'), ncol=3)) When I convert 'ch.mat' to a dataframe, the columns are converted to factors: (d1 <- data.frame(ch.mat)) mode(d1[,1]) is.factor(d1[,1]) To prevent

A student of mine wants to use R to do some nonmetric multidimensional scaling. According to the R FAQ, there's a package called pcurve that computes multidimensional scaling solutions, but I was not able to locate it the contrib page (I am a Windows user with R version 1.4.1). Can anyone tell me whether it is possible to do nonmetric multidimensional scaling with R, and if so, how? John

Dear Help, Suppose I have a character vector. x <- c("Bob", "loves", "Sally") I want to combine it into a single string: "Bob loves Sally" . paste(x) yields: paste(x) [1] "Bob" "loves" "Sally" The following function combines the character vector into a string in the way that I want, but it seems somewhat inelegant.

I sent a query to R-Help about the availability of nonmetric multidimensional scaling (MDS) algorithms in R. I would like to thank Tony Rossini, Jonathan Baron, Sundar Dorai-Raj, and Brian Ripley for helpful replies. The gist of the replies is that isoMDS in the MASS library provides Kruskal's method for nonmetric MDS, sammon in the MASS library provides Sammon's nonlinear mapping method

Dear R-Help, I am using the studres function from the MASS package to compute studentized deleted residuals in a oneway anova. I'm having trouble interpreting the results in situations where a factor level has only one observation. Sometimes studres yields an NaN and sometimes it produces a numeric value for cases where a factor level has only one observation. I would think it should

Dear R-users, I am learning to use R 1.3.1 on a Pentium running Windows '98. I'm puzzled that several statistical procedures, t.test and chisq.test, do not appear to be available on R version 1.3.1. For example, if I type "t.test", I get the reply, "Object "t.test" not found". Is there a package that I have to load in order to have access to these

Greetings, I have a question pertaining to the concept of "environment variables" that is mentioned in the R documentation for "Startup" and also in the discussion of the Windows configuration of R in the recent book "An Introduction to R" authored by Venables, Smith, and the R Development Core Team (referred to as VS in this message). The Startup documentation and

We have a position available for an experienced R programmer to provide support for software development for statnet, a suite of R packages for Exponential Random Graph Modeling (http://statnet.org -- most content is on the wiki). The current statnet development team includes several PhD level statisticians, some faculty from other disciplines, and an independent software developer. Funding

This email is forwarded on behalf of Dr. Herbert Gaskill. Please do not reply to me but direct enquiries to Ms Wanda Heath <wanda at math.mun.ca> or Dr. Herbert Gaskill <head at math.mun.ca>. Apologies for cross-posting. MEMORIAL UNIVERSITY OF NEWFOUNDLAND St. John's, Newfoundland, Canada A1C 5S7 www.math.mun.ca DEPARTMENT OF MATHEMATICS AND STATISTICS The Department of

Assistant/Associate Professor of Biometry Department of Crop Sciences College of Agricultural, Consumer and Environmental Sciences University of Illinois at Urbana ? Champaign The Department of Crop Sciences is seeking candidates for an Assistant/Associate Professor of Statistics. The successful candidate will develop a vigorous, externally funded, and nationally recognized research program with

I would expect this means the end of UWIMAP....which probably leaves DC as open-source IMAP of choice. There were 66 people doing IMAP and Pine/Alpine development that were laid off at UWash due to funding cuts; Mark Crispin, one of the fathers of IMAP, was among those laid off. From the keyboard of: James Morris Lead Engineer, UW Technology University of Washington

Multiple Research Scientist positions are available at the University of Washington (UW) Center for Data Science (http://cwds.uw.edu) located at the UW Tacoma campus for outstanding researchers to conduct applied social good oriented multidisciplinary research in areas including: Bioinformatics (with Prof. Ka Yee Yeung), Data Science (Prof. Senjuti Basu Roy), Geospatial Informatics & Mobile

DEPARTMENT OF ZOOLOGY Web developer Grade 7: Salary range:£26,666 - £32,796 Three year post A web developer is required to join the Malaria Atlas Project (MAP, http://www.map.ox.ac.uk). The job will be to lead in the improvement of the on-line presence and thus public engagement activities of MAP. Specific responsibilities will be to implement an online database of epidemiological information

Dear list members, I would like to know the difference in outputs and calculation processes between residuals.glm(object, type="response") and residuals.lm(object). For above-ground biomass estimation of trees, I estimated parameters of an allometric equation (ln y = b0 + b1*ln x) using glm as follows: fm <- glm(Ws~log(Wb), family=quasi(link="log",

UNIVERSITY OF CAMBRIDGE Research Associate In Statistical Software Grade 7: ?27,428.00 to ?35,788.00 Start date: 1st May 2012 Limit of Tenure: 30thth April 2013 The successful applicant will work on developing and implementing statistical methodology to analyze social network data. This individual will implement and document statistical algorithms in the form of packages for the R

Dear All, Please find a job description attached. Best wishes, Simon ** UNIVERSITY OF CAMBRIDGE Research Associate In Viral Phylodynamics Start date: Immediately Limit of Tenure: 3 years This post is funded by an MRC Methodology Research Programme grant, entitled 'Combining epidemiological and phylogenetic models of infectious disease dynamics'. The successful applicant will