GAMS World Forum

...or is there any example of written GAMS compatible code for a Open Tours Vehicle routing problem or school bus routing problem? I usually can find just standard closed ones...

Hello @all, I'm playing with the VRP model of Prof. Helber at the moment. I have problems figuring out how to change the closed tours to open ones: Equations: objectFunction.. ZFW =e= sum((i,j,m),c(i,j)*x(i,j,m)); Kapazitaetsrestriktion(m).. sum(i, w(i)*y(i,m)) =l= b; OrtErreichen(i,m).. sum(j, x(i,...