On Feb 19, 2012, at 7:45 PM, zheng wei wrote: > I did not know this before. I installed it as you suggested. what to > do next?
Read the Installation Manual? -- David. > > Best, > Wei > > From: David Winsemius <dwinsem...@comcast.net> > To: zheng wei <zhengwei0...@yahoo.com> > Cc: "r-help@r-project.org" <r-help@r-project.org> > Sent: Sunday, February 19, 2012 6:44 PM > Subject: Re: [R] installing the package Rcplex > > Just a guess (based on evidence of failing to read other > instructions that were made available), but have you perhaps > forgotten to install Rtools for Windows? > > http://cran.r-project.org/bin/windows/Rtools/ > > --David. > > On Feb 19, 2012, at 5:13 PM, zheng wei wrote: > > > Dear All, > > > > I have difficulty in installing the package of Rcplex. Its > description web is at > > http://cran.r-project.org/web/packages/Rcplex/index.html > > > > First, I tried > > > -------------------------------------------------------------------------------------------------- > > url <- "http://cran.r-project.org/src/contrib/Rcplex_0.3-0.tar.gz";; > > download.file(url, basename(url), mode="wb") > > install.packages(basename(url), repos=NULL) > > > -------------------------------------------------------------------------------------------------- > > > > > > but got the error of > > > -------------------------------------------------------------------------------------------------- > >> install.packages(basename(url), repos=NULL) > > Error in gzfile(file, "r") : cannot open the connection > > In addition: Warning messages: > > 1: In unzip(zipname, exdir = dest) : error 1 in extracting from > zip file > > 2: In gzfile(file, "r") : > > cannot open compressed file 'Rcplex_0.3-0.tar.gz/DESCRIPTION', > probable reason 'No such file or directory' > > > -------------------------------------------------------------------------------------------------- > > > > > > Then, I looked into the installation instruction of this package > at http://cran.r-project.org/web/packages/Rcplex/INSTALL > > Since I am using windows, I was looking at the instruction as > > > -------------------------------------------------------------------------------------------------- > > ***WINDOWS*** > > > > Installation on Windows systems is done by using the provided > > Makevars.win file in the src directory. It contains the following > > lines: > > > > PKG_CPPFLAGS=-I<CPLEX_DIR>/include > > PKG_LIBS=-L<CPLEX_DIR>/lib/x86_windows_vs2008/stat_mda -lcplex111 - > lm > > > > where <cplex_dir> is the cplex installation directory > > e.g. /c/ilog/cplex111. Please edit your Makevars.win file > accordingly. > > > > We have successfully tested this procedure with CPLEX 11.1 on 32-bit > > Windows XP. > > > -------------------------------------------------------------------------------------------------- > > > > > > I do not understand what it means exactly. I do fine the file of > Makevars.win, and confirmed the content as described above. But what > directory should I replace "/c/ilog/cplex111", and how to proceed so > as to install the package. I got no idea. One thing to note is that > it is stated from the web > http://cran.r-project.org/web/views/Optimization.html > that > > > -------------------------------------------------------------------------------------------------- > > Interfaces to Commercial Optimizers > > This section surveys interfaces to commercial solvers. Typically, > the corresponding libraries have to be installed separately. > > * PackagescplexAPI andRcplex provide an interface to the > CPLEX solver package from IBM . CPLEX provides dual/primal > simplex optimizers as well as a barrier optimizer for solving > large scale linear and quadratic programs. Furthermore, it offers > a mixed integer optimizer to solve difficult mixed integer > programs. Note that CPLEX is not free and you have to get a > license from IBM . Academics will receive a free licence upon > request. [LP, IP, BP, QP, MILP, MIQP, IPM] > > > -------------------------------------------------------------------------------------------------- > > > > > > I am not sure the above statement is relevant or not. In case > there is a necessary to get the license, since I work in a > university and I think I could figure out how to get it by > consulting the support within my own university. > > > > > > Thank you very much! > > William > > [[alternative HTML version deleted]] > > > > ______________________________________________ > > R-help@r-project.org mailing list > > https://stat.ethz.ch/mailman/listinfo/r-help > > PLEASE do read the posting guide http://www.R-project.org/posting-guide.html > > and provide commented, minimal, self-contained, reproducible code. > > David Winsemius, MD > West Hartford, CT > > > David Winsemius, MD West Hartford, CT [[alternative HTML version deleted]] ______________________________________________ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.
