re: [Help-glpk] IAJAAR.H_C-C++.dev.7z

[Nigel Galloway]

Thank you for looking at IAJAAR.H. What would you like it to be?

What is not clear? What would you like to put in the wiki?

The examples are, I think, worthy of inclusion. They demonstrate manipulation 
of the constraint matrix to progress a problem. Each step could be written in 
mathprog, but the progress from hugh.mod to gist10yo.mod would not be obvious. 
The 3 steps igst10yo.cpp, gmst10yo.java, and gist10yo.R are trivial. I think 
they are interesting, and I have seen no other examples of directly manipulaing 
the constraint matrix in the wiki or examples.

These are more fully explained:

http://www.mail-archive.com/address@hidden/msg04329.html

IAJAAR.H is a few years old. I proposed it as part of my suggestion to produce 
bindings for glpk using SWIG to a number of languages. There are, at least, two 
thing guaranteed to annoy me. One is a blunt statement that something which had 
not been proved impossible can't be done, especially if it is being done. Let 
such answer to gist10yo.R. The second is when something has been proven to be 
mathmatically impossible suddenly becomes possible, just because someone has a 
computer that appears to do it.

IAJAAR.H_C-C++.dev.7z is the C++ examples directory from the above, with the 
addition of an archive file to simplify compilation, for anyone who wants to do 
so using MinGW without compiling glpk. I also added sample.c and sample.cpp to 
more clearly demonstrate with and without IAJAAR.H.

Who else may require these files?

If you recognize yourself: 'This is a good little package. I have used DJGPP, 
Quincy99 and 02, and Dev-C++. I like Dev-C++ the most. Lots of built in tools, 
very nice IDE. I have not tried Quincy05, but Quincy02 is second to Dev-C++ in 
IDE environment'
then you should stop and use netBeans and Qt. These days every man and his dog 
seems to be writing a C++ IDE, many including a build of MinGW. Anyone using 
one of these, or MinGW as the compiler without an IDE might want these files.

I think all the files needed to produce ones own examples are provided by the 
Java and R example directory. In fact, from comments I have received, if you 
are using anything but the latest JDK you will need to recompile the Java 
example. Perhaps a simple 'with and without' for Java and R would be clearer 
but not as much fun.


> ----- Original Message -----
> From: "Robbie Morrison" <address@hidden>
> To: "GLPK help list" <address@hidden>
> Subject: re: [Help-glpk] IAJAAR.H_C-C++.dev.7z
> Date: Tue, 10 Aug 2010 20:07:04 +1200 (NZST)
> 
> 
> 
> Hello Nigel
> 
> I had a look at the IAJAAR.H entry on SourceForge, but
> am not much the wiser.
> 
>    http://sourceforge.net/projects/iajaarh
> 
> Could you perhaps explain what IAJAAR.H is, who might
> use it, and what the motivation for developing it is?
> 
> Also, should this project be mentioned on the GLPK
> wikibook?  If so, I can add something, unless you would
> like to do this.
> 
>     http://en.wikibooks.org/wiki/GLPK
> 
> just curious
> Robbie
> 
> > ------------------------------------------------------------
> > To:          address@hidden
> > Subject:     [Help-glpk] IAJAAR.H_C-C++.dev.7z
> > From:       "Nigel Galloway" <address@hidden>
> > Date:        Mon, 9 Aug 2010 13:30:50 +0100
> > ------------------------------------------------------------
> >
> > I have added another fire to IAJAAR.H:
> >
> > https://sourceforge.net/projects/iajaarh/files/IAJAAR.H_C-C%2B%2B.dev.20100806.7z/download
> >
> > It expands the origional by including the library
> > needed to compile the C++ example igst10yo.cpp. I also
> > added sample.c to demonstrate using it with C and could
> > not resist converting sample.c to sample.cpp tu use
> > IAJAAR.H. Perhaps it will form the basis for a binary
> > release of glpk using mingw.
> 
> ---
> Robbie Morrison
> PhD student -- policy-oriented energy system simulation
> Technical University of Berlin (TU-Berlin), Germany
> University email (redirected) : address@hidden
> Webmail (preferred)           : address@hidden
> [from Webmail client]
> 
> 
> 
> _______________________________________________
> Help-glpk mailing list
> address@hidden
> http://lists.gnu.org/mailman/listinfo/help-glpk

>


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