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From: dapeng on 23 Jun 2010 02:22
"Steven Lord" <slord(a)mathworks.com> wrote in message <hvr3e8$v1$1(a)fred.mathworks.com>...
>
> "dapeng " <gaodapeng1987(a)126.com> wrote in message
> news:hvi37o$dev$1(a)fred.mathworks.com...
> > "Steven Lord" <slord(a)mathworks.com> wrote in message
> > <hvanng$m56$1(a)fred.mathworks.com>...
> >>
> >> "dapeng " <gaodapeng1987(a)126.com> wrote in message
> >> news:hvam00$l0e$1(a)fred.mathworks.com...
> >> >I have MIP,with 64 variables and 30 constrains.I ues lp_solve to solve
> >> > it.[obj,opt_y]=lp_solve(inte_f',inte_A,inte_b,e,inte_lb,inte_ub,xint);
> >> > But I get the follow message.
> >> > get_ptr_sensitivity_rhs: Sensitivity unknown
> >>
> >> *snip*
> >>
> >> > Error in ==> lp_solve at 88
> >> > [obj, x, duals] = mxlpsolve('get_solution', lp);
> >> >
> >> > Error in ==> test1 at 94
> >> > [obj,opt_y]=lp_solve(inte_f',inte_A,inte_b,e,inte_lb,inte_ub,xint);
> >> >
> >> >
> >> > What's wrong with it?
> >>
> >> You're probably going to have to ask the person that provided you with
> >> the lp_solve function (and the helper MEX-file mxlpsolve that it calls.)
> >> The crash log file indicates that the failure occurred inside that
> >> MEX-file.
> >>
> >> --
> >> Steve Lord
> >> slord(a)mathworks.com
> >> comp.soft-sys.matlab (CSSM) FAQ:
> >> http://matlabwiki.mathworks.com/MATLAB_FAQ
> >> To contact Technical Support use the Contact Us link on
> >> http://www.mathworks.com Thanks Steve Lord and us! After that I used
> >> lp_solve to MIP,which size is 11*28, then I got the empty value. When 4*3
> >> MIP is solved, I can get the optimal solution quickly.
> > So what's wrong with it? Does the MIP exceed the maximum size for
> > lp_solve.
> > Please help me.Thanks in advance.
>
> I have no idea. It's not a function that's part of MATLAB or any of the
> toolboxes provided by The MathWorks, and I don't have any experience using
> it. As I said above, I think you're going to need to ask whomever wrote
> lp_solve and/or its helper MEX-file for help debugging this. If you can't
> reach that person, ask the person from whom you obtained lp_solve.
>
> --
> Steve Lord
> slord(a)mathworks.com
> comp.soft-sys.matlab (CSSM) FAQ: http://matlabwiki.mathworks.com/MATLAB_FAQ
> To contact Technical Support use the Contact Us link on
> http://www.mathworks.com
>
Thanks Steve Lord. Now I have to ask the group which provided lp_solve.
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