search for: rsymphoni

Hi, I'm new to R, and at this phase, I don't really even know how to learn how to use R. I want to use R and Symphony together. CAn I use Symphony on a windows based machine? I downloaded Symphony 5.2.0, and when I hit to install it, I'm getting an error that I can't get past. "Bad end of central directory record" Now, let's say I miraculously am able to install

Hi list, Please tell me why sometimes RSymphony.dll crashes on Windows 7 (may be on other Windows too). I saw that it depends on input data. For example this code bring to crash: library('Rsymphony') mat = c(0, 1, -100.37967, 0, 0, 1, 0, 0, -200, 0, 0, 1, -0.4, 0, 0, 1, 0, 0, -0.4, 0, 0.5, 0, 0, 0, 0, 0, -1, 0, 0, 0) mat = matrix(mat, nrow=6, byrow=TRUE) mat dir = c("=",

Hi list, I have two question relating to the Rsymphony package: a) is there a way to use 'warm starts' ? i.e. if i successively call Rsymphony_solve_LP() with only one constraints change, does it perform the optimization from the simplex-origin or does it uses the previously found solution [i.e. as is common usage, see for instance lpsolveAPI] b) to what extend are sparse matrix

Hello, I am trying to install fPortfolioSolver using the following commands and I am getting the following error: > filename [1] "C:\\Users\\Hp\\Documents\\R\\win-library\\2.12\\fPortfolioSolver_271.75.tar.gz" > > install.packages(filename, type="source", repos=NULL) ERROR: dependencies 'fEcofin', 'RlpSolve', 'RlpSolveAPI',

I'll appreciate the help on the following problem: I solved many Nonlinear programming problems with nonlinear constraints....Rdonlp is working well but i am unable to get INTEGER data with nonlinear constraints in Rdonlp. Is it possible to get Integer Values of parameters in any package of R with nonlinear constraints. Rahul [[alternative HTML version deleted]]

Good Evening Does anyone in the R-help list have experience writing an R wrapper that interfaces with the commercial packages LINGO and/or LINDO.api from R? I have a set of nonlinear/mixed integer problems that solve nicely with LINGO but I would like to use R to set the problems up and analyze/plot the solutions dynamaically. I have searched the archives and have not found any R packages that

Hello All, Could anybody point me out any port of "Global Optimization Test Problems" OR "Constraint Satisfaction Test Problems" part of Coconut[%] benchmark or other such similar benchmarks for R. [%] Coconut benchmark: http://www.mat.univie.ac.at/users/neum/public_html/glopt/coconut/Benchmark/Benchmark.html Cheers! Isa [[alternative HTML version

Dear everyone, I don't know much about Integer Programming but am afraid I am facing a problem that can only be solved via Integer Programming. I was wondering if those of you who have experience with it could recommend an R package. I found the following R packages: Rglpk glpk lpSolve lpSolveAPI Are there any others? Are some of them easier to use than others for a beginner? Any advice

Hi I am unable to try out examples from the Rmetrics Ebook from the R command prompt. Below is an example of what happens: > Covariance<-cov(SWX.RET) Error in cov.timeSeries(SWX.RET) : no slot of name "Data" for this object of class "timeSeries" I have loaded Rmetrics and fPortfolio using the library function but still I get these errors. However, if I embed the R

Dear all, I would like to solve a problem similar to a multiple knapsack problem and am looking for a function in R that can help me. Specifically, my situation is as follows: I have a list of n items which I would like to allocate to m groups with fixed size. Each item has a certain profit value and this profit depends on the type of group the item is in. My problem is to allocate the items

Hi, I have what I think is some kind of linear programming question. Basically, what I want to figure out is if I have a vector of numbers, > x <- rnorm(10) > x [1] -0.44305959 -0.26707077 0.07121266 0.44123714 -1.10323616 -0.19712807 0.20679494 -0.98629992 0.97191659 -0.77561593 > mean(x) [1] -0.2081249 Using each number only once, I want to find the set of five pairs where

There was mention of this [r-sig-fedora at r-project.org] mailing list on one of the other R lists overnight. I thought the list needed a bit of posting, as I could not recall seeing content recently on it. I cross post to the Red Hat hosted list as well, it raises issues relevant there as well I have been packaging in support of many of the financial packages at CRAN and in R-Forge [

Yesterday I wanted to try rattle on Ubuntu 9.04 Jaunty. I had (and still have) it running (though it complains on startup a bit -- I'll look into that later) on a different bootup on the same machine with 8.04 Hardy. I got an error that libglade cannot be found, and various attempts to get glade support failed. I removed and reinstalled R -- same problem. To avoid the issue of local setup

CRAN (and crantastic) updates this week New packages ------------ * allan (1.0) Alan Lee http://crantastic.org/packages/allan Automates Large Linear Analysis Model Fitting * andrews (1.0) Jaroslav Myslivec http://crantastic.org/packages/andrews Andrews curves for visualization of multidimensional data * anesrake (0.3) Josh Pasek http://crantastic.org/packages/anesrake This