Hello,
I would like to do something like this:
1. Read in binary integer problem instance in CPLEX format.
2. Perform Phase 1 simplex to get feasible solution.
3. Do other stuff.
So I am fairly comfortable with steps one and three. I can't see a clean way
to perform step 2. From the source code, it looks like I want to call
spx_prim_feas() which essentially does the phase 1 thing. Though the problem
seems to be that after reading in the problem instance, I have an lp object and
not an spx object (as required for spx_prim_feas()). In normal operation I see
that the lp information is transferred to an spx instance (in simplex1()),
before going off and preforming the entire simplex algorithm (not just phase 1).
I also realize most of what I am mentioning here isn't part of the GLPK API, so
I am not really supposed to have access to these functions. So, given what I
have described, is there a clean way to do this via the API? If not, is my
only option to hack up the glpk source to do what I want?
I am happy to provide more information is it is helpful. Thanks in advance.
Joey
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