Re: [Help-glpk] GLPK solution format

[Andrew Makhorin]

> I am running GLPK  on a fairly big problem.
> It finds the solution and the number are big.
> I noticed that if I use the option –o they are “approximated” in the
> format: 4.99e+08
> In particular two values of my solution, for the variables i498 and
> i499, are:
> 
> 
>  998 i498         *       4.99e+08      4.98e+08      4.99e+08 
>  999 i499         *       4.99e+08      4.99e+08         5e+08 
> 
> 
> However, if I print the solution with –w I get the real value of i498 ad
> i499 which are:
> 
> 
> i498  498999999
> i499  499000000
> 
> 
> But using –w I only get the values without any association to the
> variable, something like this:
> 
> 
> 498999999
> 499000000
> 
> 
> How do I get the corresponding variable for each solution value?
> 

These values follow in the same order as the corresponding rows and
columns in the problem object.

For more details please see the glpk reference manual, Ch. 3 "Utility
API Routines", Section 3.3 "Problem solution reading/writing routines",
Subsection 3.3.3 "Write basic solution to text file".