Re: [Help-glpk] glpk 4.27 release information

2008-03-04 Thread Ted Poe
Andrew/Xypron, In GLPK-4.27, config.h.in contains HAVE_SQL_H, but it does not contain: HAVE_SQLEXT_H HAVE_WINDOWS_H as it was in Xypron's glpk-4.26-tab version for compiling under Windows. Am I correct in assuming that, on my Windows platform, I'm currently limited to xBase and CSV unless I bui

Re: [Help-glpk] Testing glpk-4.26-tab

2008-02-29 Thread Ted Poe
True. However, it requires the user to (know how to) make the ODBC connection, rather than directly addressing an xBase or sqlite file from within the MathProg routine. That was my definition of portability. While it would be one extra step for me (or you), I'm thinking about the time when I m

Re: [Help-glpk] Testing glpk-4.26-tab

2008-02-29 Thread Ted Poe
...and here are my notes if you want to do the same using MinGW. Thanks, Xypron. What I realized, at the end of all of this, is that ODBC immediately takes away portability because of the requirement to link the MySQL database using ODBC. So far, for portability, we have CSV and xBase. Yours an

Re: [Help-glpk] glpk 4.26 release information

2008-02-27 Thread Ted Poe
Xypron/all, In trying to build the version (glpk-4.26-tab_r100), I must be missing something. I used the w32 Build_GLPK_with_Dev.bat file, after properly pointing the HOME variable to Dev-Cpp. GLPSOL built without error. I used the transp.sql file to create the necessary data in mysql. Then,

Re: [Help-glpk] xBASE table support added to MathProg

2008-02-25 Thread Ted Poe
Andrew, I followed these instructions and successfully compiled and tested glpsol under WinXP using dev-cpp. Thank you and xypron, too, for extending MathProg and adding this new feature. I look forward to using it. Ted --- Andrew Makhorin <[EMAIL PROTECTED]> wrote: > I have added xBASE tabl

[Help-glpk] Database connectivity in MathProg

2008-02-01 Thread Ted Poe
Andrew, Back in November, you and Xypron had a brief discussion on his mods to introduce MySQL connectivity into MathProg. Simple declarative statements, as you'd proposed, would improve its functionality for me. Can you tell me if that is an issue that is moving forward? If it's not, what wo

Re: [Help-glpk] [Q] General network model question

2007-06-05 Thread Ted Poe
Thanks, Andrew. I started with help-glpk as I'm working in MathProg, however, I will try sci.op-research, too. Regards, Ted --- Andrew Makhorin <[EMAIL PROTECTED]> wrote: > > I've been wracking my head over a network flow model issue, googled > > all around, and still can't determine if I can

[Help-glpk] [Q] General network model question

2007-06-04 Thread Ted Poe
All, I've been wracking my head over a network flow model issue, googled all around, and still can't determine if I can model something successfully. I have a simple three-node network to be evaluated over 365 days: one source, one sink, and one node which serves as a reservoir. The source can s

Re: [Help-glpk] [Q] Include statement?

2007-05-17 Thread Ted Poe
...or a little bash programming and cat'ing the sub-files together. Thanks. I wasn't thinking of the obvious today. Ted --- Andrew Makhorin <[EMAIL PROTECTED]> wrote: > > Although the MathProg manual doesn't list it, is there an 'include' > > statement that can be used in an input file? Curr

Re: [Help-glpk] [Q] Include statement?

2007-05-17 Thread Ted Poe
I'll look at gcc -E. glpsol -d would only work if I could name multiple data files, since they are getting to be quite large and unidimensional! Thanks, Ted --- Andrew Makhorin <[EMAIL PROTECTED]> wrote: > > Currently, I'm developing > > a number of scenarios of daily data over an entire yea

[Help-glpk] [Q] Include statement?

2007-05-17 Thread Ted Poe
Although the MathProg manual doesn't list it, is there an 'include' statement that can be used in an input file? Currently, I'm developing a number of scenarios of daily data over an entire year. It would be nice to be able to 'include' data by reference, instead of copying it into each file. Co

[Help-glpk] Time dependent transportation problem

2006-12-03 Thread Ted Poe
Hi everyone, I am trying to formulate a transportation problem (with intermediate storage warehousing) where some of the parameters such as demand and unit costs vary day-to-day over a 365-day period. Google doesn't provide any help, looking for time-dependent example problems in mps format, a