Linear Optimization/Programming Message #1 Posted by fhub on 31 July 2013, 10:16 a.m.
Hi,
in the last few days I've made a new version of one of my old math programs, which I've already programmed for many calculators (Sharp PC1500, HP48, TI92) and also as DOSversion.
It is about Linear Optimization (also called Linear Programming in English), and it's a quite simple program (using the Simplex Method) but has one advantage over almost all other (free) LP programs that I saw on the internet: it calculates all solutions (if there are more than one), not only the first solution found!
Since nowadays I doubt that anyone would still like to use an old DOSprogram, I've now rewritten it as Windows program (in Borland Delphi), but nevertheless the GUI is rather simple: just functional and comfortable, but without any further gimmicks (GUI programming is indeed nothing that I like very much).
So if anyone is interested and has any use for it  it's called LinOpt v5.0 and can be downloaded from my website:
http://fhub.jimdo.com/
You find it at the bottom of the right column on my site, and it includes both, an English and a German version. I've not yet included any description (that's also something I don't really like), but anyone who knows what Linear Programming is, will certainly have no problems to use it. ;)
If you have any questions about it or any ideas how to improve (or extend) this program, then let me know ...
Franz
PS: If you want to try a LP problem with multiple solutions, here's a simple example:
3 Variables, 2 Constraints, Maximize
Constr.1: 2 1 3 <= 10
Constr.2: 2 3 7 <= 15
Objective: 2 1 4 ..... 1 solution
4 4 10 ..... 2 solutions
2 1 3 ..... 3 solutions
2 3 7 ..... 4 solutions
And if you add one more constraint (no need to reenter everything else!)
Constr.3 0 0 1 <= 2
with the last objective '2 3 7'
then you even get 5 solutions!
Edited: 31 July 2013, 11:56 a.m. after one or more responses were posted
