Search Archives

Dear all, I want to produce a tab separated text file but R 1.6.2 does not respond to the tab key on my keyboard. When I paste: write.table(alla.obt.rar0, "obt.txt", sep=" ", quote=F, row...

Dear all, Is there a function in R for test of pairwise differences in point estimates of a binomial glm?. The variance-covariance matrix, vcov() in MASS, shows that there is some non-orthogonality. I use R 1.2.2...

Dear all, I'm new to matrix operations in R. I couln't find a solution to the following problem among earlier help mails or in An introd to R, I guess because the question is really basic. I want...

Dear all, I would like to use the values in vegaggr.BLMCMR02$colony str(vegaggr.BLMCMR02) `data.frame': 1678 obs. of 3 variables: $ vegtype : Factor w/ 27 levels "2010","2020",..: 3 4 5 19 4 5 19 5 $ colony : Factor...

Dear all, Does anyone know of a function that calculates the area of the outer polygon constructed from a data frame with co-ordinates? For example, library(splancs) test = rbind(c(0,0), c(10,0),c(10,10),c...

Hi all, I am trying to change data type in the Data Editor but when I do, all numbers in the column changes to NA and back in the Console I get the warning message "NAs introduced by coercion". What...

Dear all, I try to plot a logstic regression model as follows: Valkror<- read.table("Valkror.txt", header=T) np.bark<- glm(Npinc~bark, family=binomial, data=Valkror) plot.formula(np.bark$fitted.values~ Valkror$bark) The above looks nice...

Dear all, How do I replace values of a matrix, for exemple I want the matrix 1 24 1 1 1 24 1 1 1 1 1 1 1 45 104 1 1 45 1 92 1 1 104 92...

Dear all, I have installed 1.7.0 on my Win XP and want to use MASS. But I get this error message: > library(MASS) Error in namespaceExport(ns, exports) : undefined exports: abbey, accdeaths, Aids2, Animals, anorexia, austres, bacteria, beav1...

Dear all, I have discovered that there are many things that I used to do in my GIS which are easily done directly in R, for example calculating interpoint distances using geoR and pick out points inside a polygon using...

Dear all, I would like to read in ArcView (or ArcGIS) shape files from which I will pick information if fitting a geostatistical model using WinBUGS. In the GeoBUGS Used Manual it says "GeoBUGS does not have an option for...

Dear G?tz Wiegand and Corey Moffet, Thanks for answering while I went to get a cup of coffee. This list is really excellent! The answer, for you other beginners, is in R a tab is represented "\t" Tord > >Dear...

Dear all, I want to plot the values of a data frame in an image using as.character() as below. It works fine for values lower than 10. However, data values >10 are plotted as ones, i.e. 1, in...

Dear all, I am taking a course in GLM given by a devoted SAS user. He has given us a homework where a mixed GLM with a logistic link and binomially distributed observations should be fitted. I know of the...

Dear all, I would be really happy for help with the following because I will treat many columns the same way. nlevels per ObjektID is what I want, but nlevels returns all levels occurring in cpy.busk$TradArt: buskartant<- aggregate...

Hi, I want to make approximately 10000 square polygons (300*300) based on coordinates in a data frame, and make a .shp-file out of these. The .pdf "S Classes and Methods for Spatial Data: the sp Package" by Pebesma...

>Use > par(las = 1) > polymap(.....) > >Not all the arguments of par() do work as arguments in all highlevel >functions ... Dear Uwe Ligges, Thanks very much! This was new to me. Sincerely, Tord > >Uwe Ligges > > >> Mayby some function in library(spatstat...

Dear all, I try to rearrange my ref. database (now in Excel!! :( ) for importing it into a reference manager program (RIS format). My file basically look like this [3,4]-matrix: rbind(c("a", "b", "c", "d"), c("e", "f...

Dear all, For the past three hours I have tried simplify a data frame. I would be really happy if someone could help solving this, I'm sure simple, problem. I want to "aggregate" the data frame: ObjektID BalteNummer Baltessegment...

Hi all, I am considering buying S-Plus but I wonder if that is really necessary since it seems to be possible doing most (all?) things using R instead. More specifically I am interested in the functions available in the...