similar to: recategorizing a vector into discrete states

Hi all, This is as much as statistical/estimation question as an R-specific one, but here goes. I am trying to use logistic regression to predict suitability of habitats for certain plant species. The response variable is a binary one that indicates whether a particular species is found at a site on the landscape. The independent variables represent physical characteristics of the landscape

Hi All, I'm trying to specify the formula for a glm based upon the names in the data.frame. I always discard the first two variables in the frame and the third will always be the only response variable. The problem appears because I would like to specify the rest of the variables of the data.frame as independent variables in the formula. I can't think of a way to do this cleanly and

Whether the two variables have the same units does not matter. Moreover, even if there were some way of converting cm to kg the correlation would still be the same because the correlation is invariant under unit conversion as it is invariant under multiplication of its arguments by a constant. As for your second question, the correlation estimator is a continuous function of each of the

I've been trying to learn about dynamically loading subroutines in R. Ultimately I would like to use this approach to implement some simulations. For the moment though, I've run into a problem compiling c++ code and loading it into R. The 'C/C++' and 'R'code below works fine when compiled and linked with gcc, but gives an error when the library is compiled and linked with

Hi List I have a dataframe (~1,200,000 rows deep) and I'd like to conditionally reorder groups of rows in this dataframe. I would like to reorder any rows where the Chr.Strand column contains a '-' but reorder within subsets delineated by the Probe.Set.Name column. # toy example #### library(plyr) negStrandGene <- data.frame(Probe.Set.Name =

Hello! I''m looking for assistance EXTENDING an example from the Agile Web Development With Rails book: Composing Data with Aggregation (page 324). I''m trying to map three columns to a single Ruby object. However, unlike the example in the Agile Web Development book, the three columns I want to map into one object come from THREE DIFFERENT models. I want to map the following

Hi All, I'm trying to come up with a clear and concise (and fast?) solution to the following problem. I would like to take a vector 'v' and enumerate all of the ways in which it can be broken into n sets of length 2 (if the length of the vector is odd, and an additional set of length 1). An element of 'v' can only appear in one set. Order within sets is not important.

Hello, I would like to take a data set of doctors, and recategorize them into numbers. For example, John Doe would be assigned as 1 Jane Doe would be assigned as 2 Does anyone know how to do this in R? It seems quite easy, yet I cannot find the code. Thank you, Michael Leitson Research Intern MSAS Candidate Michael.Leitson@wellstar.org

Hi, is there any package/function in Bioconductor that can do this: if given the chromosome positions of a fragment, find out all genes within, and with the information about which strand is the sense strand. And vice versa. Thanks a lot. ----- Appreciate your time & attention! -- View this message in context: http://www.nabble.com/list-genes-w-n-a-genomic-fragment-tp18331452p18331452.html

Great R people, I have noticed a strange behaviour in read.delim() and friends in the R 2.7.0 version. I will describe you the problem and also the solution I already found, just to be sure it is an expected behaviour and also to tell people, who may experience the same difficulty, a way to overcome it. And also to see if it is a proper behaviour or maybe a correction is needed. Here is the

Hi all, I am interested in calculating and displaying the distributions of pairwise comparisons between DNA sequences in populations. The comparisons are the number of nucleotide sites that differ between the two sequences (mismatches). My sequences are stored in a vector of strings. There is an additional vector of the same length that provides the indices to the DNA sequences. Finally, I

This group impresses me, so far I have been helped with all my questions within 24 hours. Thanks. Therefore another one. I am used to programs (such as STATA) where observations with missing values that are included in a model are simply ignored in the analysis. So far I have not been able to figure out how to deal with missing values in R and have solved the problem by deleting observations

I have a habtm relationship between two models. What I want to do is find items that aren''t related. So like if you had authors <-> posts, how would you find authors who don''t have any posts? Or posts that don''t have an author ? Thanks, Alex Strand [astrand@razorcom.com] Razorcom www.razorcom.com

Greetings I run into a compilation error when updating to mgcv_1.1-7 in R 2.0.0 on OS X 10.3. Note that other pacakges have compiled nicely. Some details are given below, but in short it looks like it's seeking for /usr/local/lib/powerpc-apple-darwin6.8/3.4.2/ which I don't have. But I do have /usr/lib/gcc/darwin/3.3 i.e a lower version of GCC in a different directory. More

Hi all, I am given the a data frame in which one of the columns has more information together- see column 4, peak_loc: chr start end peak_loc cluster_TC strand peak_TC 1 chr1 564620 564649 chr1:564644..564645,+ 94 + 10 2 chr1 565369 565404 chr1:565371..565372,+ 217 + 8 3 chr1 565463 565541 chr1:565480..565481,+ 1214 + 15 4 chr1

Hi, i have two files (file1.txt and file2.txt) which i would like to merge, based on certain criteria, i.e. it combines data based on matching geneID and exons. i have used the merge option, but it does not give me the desired outcome. merged.txt shows the result i would like. *File1. txt* ** AffyProbe ProbeType Flag GeneSymbol GeneID Exons Chrom Strand Affytart AffyEnd 1

This removes dependence on external firmware for NV50 generation cards. If the generated ctxprogs don't work for you for some reason, please report it. Signed-off-by: Marcin Ko?cielnicki <koriakin at 0x04.net> --- drivers/gpu/drm/nouveau/Makefile | 2 +- drivers/gpu/drm/nouveau/nouveau_drv.h | 1 + drivers/gpu/drm/nouveau/nv50_graph.c | 74 +-

Hello, This is my first time trying to use plyr, and I'm getting nowhere. I have teacher ratings data (1:4), on 10 components, by external observers and internal observers, in schools in areas. I want to calculate the percentage of each rating given on each component, by each type of observer, within each school, within each area. The data look like this: unit area ext.obs rating comp 11

Does IE and Windows Media Player (any version) work with Wine 0.9.10 or the latest CVS version? If so, how to install? I've tried but failed: * With the latest CVS and sidenet-1.9.1, using option "IE6 with WMP6 installation", the IE setup fails with "The download location information is damaged". * With Wine 0.9.10, using the FC4 RPM: The same as above. * If I try

I've joined a Windows 2003 server to a domain hosted by a Samba 2.2.8 machine. It works fine to log in locally at the console, but not via terminal services. The login screen says: "You do not have access to logon to this session." The Event viewer says: "Failed to load Terminal Server Profile path. Note that the profile path must be less than 256 characters in