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Dear all, how can I, with R, transform a presence-absence (0/1) matrix of species occurrences into a presence-only table (3 columns) with the names of the species (1st column), the lat information of the sites (2nd column) and the lon information of the sites (3rd column), as given in the below example? Thanks a lot for your help! Christian my dataframe: site lat lon spec1 spec2 spec3 spec4

Dear all, how can I, with R, transform a presence-only table (with the names of the species (1st column), the lat information of the sites (2nd column) and the lon information of the sites (3rd column)) into a presence-absence (0/1) matrix of species occurrences across sites, as given in the below example? Thanks a lot for your help! Christian My initial table: species lat lon sp1 10 10

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Dear all, maybe somebody can provide some help for this problem: Example: I've got the following dataframe "data": grid.id<-c(1:4) lat<-c(10,12,13,15) species1<-c(0,0,0,1) species2<-c(1,1,0,0) species3<-c(1,1,1,1) data<-data.frame(cbind(grid.id,lat,species1,species2,species3)) How can I, out of "data" make a new dataframe, where the cells of value

...e from Kery and Schaub's (2012) book, "Bayesian Population Analysis Using WinBUGS". The example I'm using is 7.3.1. from a chapter on the Cormack-Jolly-Seber model. Some excerpted code is included at the end of this message; the full code is available at http://www.vogelwarte.ch/downloads/files/publications/BPA/bpa-code.txt The latent state of individual i on occasion t is stored in the z matrix where rows index individuals (owls that are marked and released) and columns index capture occasions. Each value in the matrix represents the latent state for individual i...

Dear all, I have an issue trying to install new packages (have tried with RODBC_1.3-1, gplots_2.6.1, gtools_2.7.4 packages) and get the same error message : "Error in library(gplots) : there is no package called 'gplots'" Only clue I have found so far on the Web is related to Perl (Perl modules are installed on my computer, but which one is related to gplots if any ?); no

Full_Name: Ommo H?ppop Version: 2.0.1 OS: XP Submission from: (NULL) (84.143.196.187) Hi, Presumably, I've found an error in http://finzi.psych.upenn.edu/R/doc/manual/R-intro.html In Chapter 11.3 Generic functions for extracting model information it says "Select a suitable model by adding or dropping terms and preserving hierarchies. The model with the LARGEST value of AIC

Hi everyone, I am trying to run the example of multistate occupancy model from the book Bayesian Population Analysis using WinBUGS (Marc Kéry and Michael Schaub): This example is available on http://www.vogelwarte.ch/code-for-running-bpa-using-jags.html When I try to run the first line of this section of the model : # Initial values zst <- apply(y, 1, max, na.rm = TRUE) zst[zst == "-Inf"] <- 1...

Hello Everyone,   Learning about R and its wonderful array of functions. If it's not obvious, I usually try to find out what a function stands for. I think this helps me remember better.   One function that has me stumped is "sink." Can anyone tell me if this stands for something?   Thanks,   Paul         __________________________________________________ [[alternative HTML