Functions
def	get_model_text ()

def	guss_call (dict, mi, solve_statement, opt=None, mi_opt=None, output=None)

Variables
	ws = GamsWorkspace(system_directory = sys.argv[1])

	cp = ws.add_checkpoint()

	t12 = ws.add_job_from_string(get_model_text())

	checkpoint

	mi = cp.add_modelinstance()

list	bmultlist = [ 0.6, 0.7, 0.8, 0.9, 1.0, 1.1, 1.2, 1.3 ]

	db = ws.add_database()

	scen = db.add_set("scen", 1, "")

	bmult = db.add_parameter_dc("bmultlist", [scen])

	zscen = db.add_parameter_dc("zscen", [scen])

int	i = 0

	value

	dict = db.add_set("dict",3,"")

	mi2 = cp.add_modelinstance()

	db2 = ws.add_database()

	scen2 = db2.add_set("scen", 1, "")

	zscen2 = db2.add_parameter_dc("zscen", [scen2])

	xup = db2.add_parameter("xup", 3, "")

	dict2 = db2.add_set("dict", 3, "")

	output

Function Documentation

◆ get_model_text()

def transport12.get_model_text ( )

Definition at line 10 of file transport12.py.

def get_model_text():
     return '''
   Sets
        i   canning plants   / seattle, san-diego /
        j   markets          / new-york, chicago, topeka / ;
  
   Parameters
  
        a(i)  capacity of plant i in cases
          /    seattle     350
               san-diego   600  /
  
        b(j)  demand at market j in cases
          /    new-york    325
               chicago     300
               topeka      275  / ;
  
   Table d(i,j)  distance in thousands of miles
                     new-york       chicago      topeka
       seattle          2.5           1.7          1.8
       san-diego        2.5           1.8          1.4  ;
  
   Scalar f      freight in dollars per case per thousand miles  /90/ ;
   Scalar bmult  demand multiplier /1/;
  
   Parameter c(i,j)  transport cost in thousands of dollars per case ;
  
             c(i,j) = f * d(i,j) / 1000 ;
  
   Variables
        x(i,j)  shipment quantities in cases
        z       total transportation costs in thousands of dollars ;
  
   Positive Variable x ;
  
   Equations
        cost        define objective function
        supply(i)   observe supply limit at plant i
        demand(j)   satisfy demand at market j ;
  
   cost ..        z  =e=  sum((i,j), c(i,j)*x(i,j)) ;
  
   supply(i) ..   sum(j, x(i,j))  =l=  a(i) ;
  
   demand(j) ..   sum(i, x(i,j))  =g=  bmult*b(j) ;
  
   Model transport /all/ ;
 '''
  
  
 # Needs to be called with an uninstantiated GAMSModelInstance

◆ guss_call()

def transport12.guss_call	(	dict,
		mi,
		solve_statement,
		opt = `None`,
		mi_opt = `None`,
		output = `None`
	)

Definition at line 61 of file transport12.py.

References markowitz.key.

Variable Documentation

◆ bmult

transport12.bmult = db.add_parameter_dc("bmultlist", [scen])

Definition at line 191 of file transport12.py.

◆ bmultlist

list transport12.bmultlist = [ 0.6, 0.7, 0.8, 0.9, 1.0, 1.1, 1.2, 1.3 ]

Definition at line 186 of file transport12.py.

◆ checkpoint

transport12.checkpoint

Definition at line 181 of file transport12.py.

◆ cp

transport12.cp = ws.add_checkpoint()

Definition at line 177 of file transport12.py.

◆ db

transport12.db = ws.add_database()

Definition at line 188 of file transport12.py.

◆ db2

transport12.db2 = ws.add_database()

Definition at line 214 of file transport12.py.

◆ dict

transport12.dict = db.add_set("dict",3,"")

Definition at line 201 of file transport12.py.

◆ dict2

transport12.dict2 = db2.add_set("dict", 3, "")

Definition at line 226 of file transport12.py.

◆ i

int transport12.i = 0

Definition at line 194 of file transport12.py.

◆ mi

transport12.mi = cp.add_modelinstance()

Definition at line 184 of file transport12.py.

◆ mi2

transport12.mi2 = cp.add_modelinstance()

Definition at line 213 of file transport12.py.

◆ output

transport12.output

Definition at line 231 of file transport12.py.

◆ scen

transport12.scen = db.add_set("scen", 1, "")

Definition at line 190 of file transport12.py.

◆ scen2

transport12.scen2 = db2.add_set("scen", 1, "")

Definition at line 216 of file transport12.py.

◆ t12

transport12.t12 = ws.add_job_from_string(get_model_text())

Definition at line 180 of file transport12.py.

◆ value

transport12.value

Definition at line 196 of file transport12.py.

◆ ws

transport12.ws = GamsWorkspace(system_directory = sys.argv[1])

Definition at line 173 of file transport12.py.

◆ xup

transport12.xup = db2.add_parameter("xup", 3, "")

Definition at line 218 of file transport12.py.

◆ zscen

transport12.zscen = db.add_parameter_dc("zscen", [scen])

Definition at line 192 of file transport12.py.

◆ zscen2

transport12.zscen2 = db2.add_parameter_dc("zscen", [scen2])

Definition at line 217 of file transport12.py.

Functions

Variables