Originally posted by: Tugba88

Hello,

I do not know if I am right here. I am studying Mathematics in Germany (because of that, I am sorry about my englisch) and I must program things with SCIP include C (C++). I have never done something like this before and I do not understand how SCIP is “thinking”. The think I must to do is:
I have a written Code about Column Generation. An Instance Data, a Pricer, a Branching rule and a main data in which all the data above are included and the main problem are defined.
The thing I must to do now is: I need in each iteration: the value of the restricted Master problem, the value of the dual variables and the optimal value of the pricing problem. All these value are calculate during the program, but I cannot print out them.
I hope you understand my english and my problem. For the case not I want to do something like here: http://page.math.tu-berlin.de/~luebbeck/papers/primer.pdf. Something like on page 4 where they print out all values. z^- is the value of the restricted master problem, the pi´s are the dual values and c^-* is the optimal value of the pricing problem. I need these values to plot a diagram as on page 12. But I also have no idea how I can plot things in SCIP.

How I have said: I have no idea how program languages like SCIP,C++ work. I cannot think how these programs do. I am overwhelmed with this situation.

I hope you can give me some tips. Can you propose books or homepages to me??

Thank you in anticipation!
Tugba
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Originally posted by: T_O

First of all, this is a CPLEX forum, so I think you should not expect SCIP experts here.

If you never implemented anything in C++, you should forget your optimization problems for a while and try to learn some C++. Compiling a simple "Hello World."-example is not always an easy task. Which platform are you using (Windows/Linux)? Which compiler are you using?

When your basic C++-programs compile and you think you understand the fundamental programming concepts, you can try to compile some optimization examples. There are lots of them in CPLEX, but I don't know whether there are any in SCIP. Just have a look.

Best regards,
Thomas
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Originally posted by: SystemAdmin

SCIP has its own mailing list, see the link on this page. From there you can also find more resources about SCIP, including several examples.
But like Thomas said: if you have no clue about C++ then this is the first issue you should resolve. As far as I know SCIP also has a C interface. So if you happen to know C then this might be easier to use.
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