similar to: require(simecol) error

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Dear useRs, a new and completely re-worked version of the "simecol" package SIMulatiion of ECOLogical (and other) dynamic systems is now available on CRAN. Compared to the S3 based 0.2-x versions an improved object model using S4 classes was employed. Please ask me for assistance in case of incompatibility. Comments are welcome, Thomas Petzoldt

Dear useRs, a new and completely re-worked version of the "simecol" package SIMulatiion of ECOLogical (and other) dynamic systems is now available on CRAN. Compared to the S3 based 0.2-x versions an improved object model using S4 classes was employed. Please ask me for assistance in case of incompatibility. Comments are welcome, Thomas Petzoldt

Dear useRs, I have written an ecological model, based on the epidemiology SIR model. I've been trying to simulate it in R. However, I can't simulate it properly. Two guesses: my script isn't right; I'm not setting the parameters properly I have uploaded an image to the model here: http://img24.imageshack.us/img24/743/imagemutr.jpg The script I am using is as it follows:

hey can anybody help me? i have to simulate the richardson Arms race model on R.. for my simulation class...

Hi there, I have a binary matrix (dim 100x100) filled with values 0 and 1. I need select a record "n" positions of that matrix when values are 1. How can I do that? Thanks for all, Miltinho Brazil --------------------------------- [[alternative HTML version deleted]]

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We've added a column at http://cran.r-project.org/web/checks/check_summary.html of test results using the Sun Studio compiler: it is intended that these will be updated weekly. The Sun Studio compiler is that used on Solaris: these runs were on the Linux version. All the other platforms are using gcc 4, so this provides an opportunity for checking for use of gcc-specific features and

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Dear R developers, I recently observed a NOTE on several MaxOS X package checks: sh: line 1: gs: command not found !!! Error: Closing Ghostscript (exit status: 127)! /usr/bin/texi2dvi: thumbpdf exited with bad status, quitting. See for details: http://www.r-project.org/nosvn/R.check/r-release-macosx-ix86/simecol-00check.html or

Hi All I have been struggling with this model for some time now and I just can't get it to work correctly. The messages I get when running the code is: DLSODA- Warning..Internal T (=R1) and H (=R2) are such that in the machine, T + H = T on the next step (H = step size). Solver will continue anyway. In above message, R = [1] 0 0 DINTDY- T (=R1) illegal In above message, R = [1]

Dear all, I have a so large image (43,000 x 18,000 pixels) and I need clip this image with a smallest one (1000x1000 pixels). I can read the second image using rgdal package. But the first image can´t be read on my system because if memory limitation (I have about 2GB availabe). So I would like hear from you if anyone have some suggestin in this regards. I have also ArcGis 8.6 ans Erdas 8.3