Sometime one wants to merge set elements from several GDX-files into one basic set. Below is code fragment, which shows how to o this, even if the gdx-files files contain lots of common elements.
First we generate some gdx files:
set a /a,b,c/; set b /c,d,e/; execute_unload "seta",a; execute_unload "setb",b;
Now we combine these gdx files into one:
set c; $onmulti $gdxin seta $load c=a $gdxin setb $load c=b display c;
1 set c; --- LOAD c = 1:a --- MERGE c = 1:b 7 display c; ---- 7 SET c a, b, c, d, e