我在AMPL中的任务很短。
有类似的问题,但是并没有给我带来解决方案
这是我的.mod文件:
set MOTORS;
set FABRICS;
param work {FABRICS,MOTORS}>= 0;
param power {FABRICS}>= 0;
param price {MOTORS}>= 0;
var prod {MOTORS}>= 0;
var use {o in FABRICS} = sum {k in MOTORS} work [o,k] * prod[k];
var free {o in FABRICS} >= 0;
var income = sum {k in MOTORS} price[k]*prod[k];
maximize income;
s.t. Ogrfreepower {o in FABRICS}: free[o]= power[o]- use[o];
这是我的.dat文件:
set MOTORS:= GL SL ;
set FABRICS:= montage paintshop;
param work: GL SL:=
montage 2 5
paintshop 3 3
;
param: power :=
montage 150
paintshop 180
;
param: price :=
GL 2
SL 3
;
这是我的.run文件:
#RESET THE AMPL ENVIROMENT
reset;
model example1.mod;
data example1.dat;
#LOAD THE MODEL
option solver './cplex';
#SOLVE
solve;
#SHOW RESULTS
display income;
当我尝试使用控制台时
ampl: include example1.run;
它带给我:
example1.mod,line 19 (offset 314):
income is already defined
context: maximize >>> income; <<<
我应该更改什么才能正确编译?