similar to: glpk package missing?

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

Recently, a package for convex optimization was announced for Python, based upon the LP solver GLPK, the SDP solver in DSDP5, and the LP and QP solvers in MOSEK. I'm aware GLPK is available for R, but wondered if anyone had good packages for convex optimization along these lines for R. TIA.

Hi. I am aware of three different R packages for linear programming: glpk, linprog, lpSolve. From what I can tell, if there are N variables and M constraints, all these solvers require the full NxM constraint matrix. Some linear solvers I know of (not in R) have a sparse matrix input format. Are there any linear solvers in R that have a sparse matrix input format? (including the

Dear All, Thank you for the replies to my first thread here: http://r.789695.n4.nabble.com/global-optimisation-with-inequality-constraints-td3799258.html. So far the best result is achieved via a penalised objective function. This was suggested by someone on this list privately. I am still looking into some of the options mentioned in the original thread, but I have been advised that there may

In my post at https://stat.ethz.ch/pipermail/r-help/2011-October/292019.html I included an undefined term "ej". The problem code should be as follows. It seems like a simple linear programming problem, but for some reason my code is not finding the solution. obj <- c(rep(0,3),1) col1 <-c(1,0,0,1,0,0,1,-2.330078923,0) col2 <-c(0,1,0,0,1,0,1,-2.057855981,0) col3

On 08/04/2011 11:35, FlyLanguage wrote: > Do your own benchmarking, on the stuff that matters to you. It's the > only fair benchmark you'll ever see. I agree, but this is somewhat extreme point of view. Some general comparisons could also be of interest. For example, performance comparison of some deterministic software like GLPK solver, or compiler itself would be interesting to

Hello everybody, I am looking for a function (or package) which can solve a integer optimization problem. I have found the glpk package but I don't known very well how to use it. Someone has another solution ? thx

Hi All, this is a CRAN question, so I am sorry if this is not the appropriate forum. I noticed that there is at least one CRAN package that has a binary (OSX Mavericks) for a version, that does not have any source package on CRAN. Or at least I am unable to locate it. The package is Rglpk: http://cran.r-project.org/web/packages/Rglpk/index.html It offers a binary for 0.5-2, but there is no

The R interface to the GNU Linear Programming Kit (GLPK) is now available on CRAN. The R interface functions are almost identical to the native GLPK C API making it easy to move code and concepts between R and C. The GLPK package is intended for solving large-scale linear programming (LP), mixed integer linear programming (MIP), and other related problems. The GLPK library includes the

The R interface to the GNU Linear Programming Kit (GLPK) is now available on CRAN. The R interface functions are almost identical to the native GLPK C API making it easy to move code and concepts between R and C. The GLPK package is intended for solving large-scale linear programming (LP), mixed integer linear programming (MIP), and other related problems. The GLPK library includes the

Good afternoon all - While making a steady progress in learning R after Matlab I encountered a problem which seems to require some extra help to move over. Basically I want to merge a data from biological statistical dataset with annotation data extracted from another dataset using an 'id' crossreference and write it to report file. The first part goes absolutely fine, I have merged both

----- Original Message ----- > From: "G?bor Cs?rdi" <csardi.gabor at gmail.com> > To: "John McKown" <john.archie.mckown at gmail.com> > Cc: r-devel at r-project.org > Sent: Thursday, March 19, 2015 9:03:37 AM > Subject: Re: [Rd] CRAN binary, but no source > > On Thu, Mar 19, 2015 at 11:59 AM, John McKown > <john.archie.mckown at

Hi All Apologies if this is not the correct list for this question. The Rglpk package offers the following example in its documentation library(Rglpk) ## Simple mixed integer linear program. ## maximize: 3 x_1 + 1 x_2 + 3 x_3 ## subject to: -1 x_1 + 2 x_2 + x_3 <= 4 ## 4 x_2 - 3 x_3 <= 2 ## x_1 - 3 x_2 + 2 x_3 <= 3 ## x_1, x_3 are non-negative integers ## x_2 is a non-negative real

Hi everybody, I installed Rglpk package from local zip files. Then I tried to load the package in a R session. But R shows following message. Loading required package: slam Error: package 'slam' could not be loaded In addition: Warning message: In library(pkg, character.only = TRUE, logical.return = TRUE, lib.loc = lib.loc) : there is no package called 'slam' Hence, the

Hi list, in the Rglpk_solve_LP function (::Rglpk), on line 26, the function calls a function as.glp_bounds() that i cannot access. i'm trying to alter the Rglpk_solve_LP function to add a line to retrieve column/row dual values. everytime i change the slightest line of code inside Rglpk_solve_LP() [to even add a print] i get a ': could not find function "as.glp_bounds"'

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

Can optimisation (simplex etc) be done through R?

Dear listers, a central problem in conservation biology is the selection of sites in reserve network design. many algorithms have been published, and I was wondering any have been implemented in R. I did not seen anything on CRAN or R-help, or on the web in general. Best regards, Eric Eric Pante ---------------------------------------------------------------- College of Charleston, Grice

Does anyone know whether R has its own modeling language for optimization problems (like SIMPLE in NuOPT for S-plus)? Paolo

On Thu, Mar 19, 2015 at 10:54 AM, John McKown <john.archie.mckown at gmail.com> wrote: > On Thu, Mar 19, 2015 at 10:46 AM, G?bor Cs?rdi <csardi.gabor at gmail.com> wrote: >> Hi All, >> >> this is a CRAN question, so I am sorry if this is not the appropriate forum. >> >> I noticed that there is at least one CRAN package that has a binary (OSX >>