Hello Jeff, Thanks for your email. I am using windows and Matlab 2013. GLPKMex requires GLPK installation through http://en.wikibooks.org/wiki/GLPK/Windows. I was able to install GLPK through windows executables ( http://en.wikibooks.org/wiki/GLPK/Windows_executables) but could not install GLPK through http://en.wikibooks.org/wiki/GLPK/Windows. GLPKMex is asking for glpk.h and libglpk.a file and I think that I can only get them from GLPK Windows batch file based installation.
Although, my current description will deviate from the subject topic, I will describe the steps that I performed in GLPK installation. 1. I downloaded and installed all packages that are described in http://en.wikibooks.org/wiki/GLPK/Windows (Visual C++, Windows SDK, Visual Studio 2010, Visual C++ 2010 Service Pack). 2, I downloaded glpk-4.48 from http://ftp.gnu.org/gnu/glpk/. 3. I go to the /glpk-4.48/w64/ folder and run 'Build_GLPK_with_VC10_DLL' as an administrator and it shows me the following message: "The specified configuration type is missing. The tools for the configuration might not be installed" !! 4. I tried "CALL "C:\Program Files\Microsoft SDKs\Windows\v7.1\Bin\SetEnv.cmd" /x64" in my cmd. But it did not create the vcvars64.bat file in C:\Program Files (x86)\Microsoft Visual Studio 10.0\VC\ directory. I don't know why this might be happening :S. 5. Someone of this forum suggested me to generated vcvars64.bat file by notepad. But I don't know what I should put there. I see vcvarsall.bat file in my C:/Program Files/Visual Studio 10.0/vc/ subfolder directory but I don't know how I can change the contents to create vcvars64.bat file. My current option is to uninstall all packages of http://en.wikibooks.org/wiki/GLPK/Windows (Visual C++, Windows SDK, Visual Studio 2010, Visual C++ 2010 Service Pack) and install them again. I wanted to check with you if I missed any step before I went through that route. Any feedback regarding this installation will be really helpful. At present, I don't have much clue why this is happening. Thanks, Nazmul On Sun, Dec 29, 2013 at 11:25 AM, Jeffrey Kantor <[email protected]> wrote: > > I may not be understanding your intended use. If the problem has already > been reduced to canonical form with A, b, c, lb, and ub as Matlab matrices, > then there is little value to introducing a modeling layer. You could just > call a glpk through glpkmex (see http://en.wikibooks.org/wiki/GLPK/Matlab) > and avoid the overhead of converting your data to a text format, building > the model, and reading the results. > > If you do wish to use a modeling language, such as Mathprog, then you > might consider using AWK to manipulate and generate instances of data > inputs to your model. But from your note, it sounds like you've already > got that worked out in Matlab. > > Also, if you have access to it, you may want to look into the prerelease > of Matlab 2014a. > > Jeff > > > On Saturday, December 28, 2013, Nazmul Islam wrote: > >> Hello Reg (& others), >> >> Thanks a lot for your email. >> >> As a fast step, I want to solve a mixed integer linear program like >> follows >> >> min c'x >> s.t. Ax <= b, >> lb <= x <= ub >> Some variables of x are binary ones. >> >> I have generated A, b, c, lb, ub in Matlab and stored them in .mat >> format. I have to convert them to GMPL readable format so that I can solve >> this code using GLPK. I have attached a sample of those files with my >> email. I will really appreciate if you could tell me how I can convert them >> using AWK. Please let me know if you want me to send a .mat file with >> smaller size. >> >> Your help will be very appreciated. >> >> Thanks, >> >> Nazmul >> >> >> On Fri, Dec 27, 2013 at 3:30 PM, Reginald Beardsley >> <[email protected]>wrote: >> >>> Nazmul, >>> >>> I suggest you consider using awk to generate data files in GMPL format >>> from ASCII text (.txt) files if you have very many instances to solve. You >>> put the problem formulation in one file and the data for each instance in >>> another file and execute "gplsol -m model.dat -d data.dat". I've found >>> this works very well solving large numbers of problem instances. In >>> particular, it makes changing the model very simple. I can't find out >>> anything about the Guesk editor so I can't comment on setting up GMPL >>> notation data files using that. >>> >>> I tried using the CSV import facility in GMPL, but found it not very >>> convenient because of restrictions on the CSV format glpk accepts. >>> >>> There is a MATLAB binding for GLPK, but I don't know how usable it is. >>> The MATLAB clone, Octave, also has a built-in binding to GLPK. >>> >>> http://en.wikibooks.org/wiki/GLPK/Matlab >>> >>> http://en.wikibooks.org/wiki/GLPK/Octave >>> >>> http://en.wikibooks.org/wiki/GLPK/Scripting_plus_MathProg >>> >>> There is a Gnu implementation of awk, gawk, which is standard on Linux >>> systems. It's also available on Windows. >>> >>> http://gnuwin32.sourceforge.net/packages/gawk.htm >>> >>> If you need help with writing an awk script to convert the MATLAB .txt >>> files to GMPL notation send me a small example of the MATLAB .txt file and >>> I'll add an example to the GLPK wiki. >>> >>> You'll need to figure out how to write a basic GMPL problem first. A >>> good place to look is in the examples directory at cf12a.mod which >>> implements an L1 line fit. I solve physics inverse problems by basis >>> pursuit using GMPL notation so I can probably offer some help. I do >>> problems with 30,000 columns by 50-300 rows. The resulting files are huge, >>> so you want to get everything working using a small example before doing >>> something that large. I did some little 10x10 problems to figure out how >>> to set it up. >>> >>> Reg >>> >>> >>> >>> >>> -------------------------------------------- >>> On Thu, 12/26/13, Nazmul Islam <[email protected]> wrote: >>> >>> Subject: [Help-glpk] Import data from Matlab variables to GLPK/GMPL >>> To: [email protected] >>> Date: Thursday, December 26, 2013, 8:49 PM >>> >>> Hello, >>> I want to write my GLPK code through the Guesk >>> editor and I am very new to the GNU Math Programming >>> Language. >>> I want to import some data from Matlab to my GLPK >>> code. I want to run the code with these imported data. The >>> data is currently in some variables of Matlab and I can >>> store them in some .mat files. Do I need to save all these >>> Matlab variables in a single .dat file (or .txt file?) and >>> then import to GNU Math Prog language? >>> >>> Is there any example that I can >>> follow? >>> Thanks, >>> Nazmul >>> >>> >>> -----Inline Attachment Follows----- >>> >>> _______________________________________________ >>> Help-glpk mailing list >>> [email protected] >>> https://lists.gnu.org/mailman/listinfo/help-glpk >>> >>> >>> >>> >>
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