transport_gdx.py File Reference
This example shows the use of the GamsDatabase class for reading and writing GDX files. More...
Go to the source code of this file.
Variables | |
sys | transport_gdx.sys_dir = sys.argv[1] if len(sys.argv) > 1 else None |
GamsWorkspace | transport_gdx.ws = GamsWorkspace(system_directory=sys_dir) |
list | transport_gdx.plants = ["Seattle", "San-Diego"] |
list | transport_gdx.markets = ["New-York", "Chicago", "Topeka"] |
dict | transport_gdx.capacity = {"Seattle": 350.0, "San-Diego": 600.0} |
dict | transport_gdx.demand = {"New-York": 325.0, "Chicago": 300.0, "Topeka": 275.0} |
dict | transport_gdx.distance |
GamsWorkspace | transport_gdx.db = ws.add_database() |
GamsWorkspace | transport_gdx.i = db.add_set("i", 1, "canning plants") |
GamsWorkspace | transport_gdx.j = db.add_set("j", 1, "markets") |
GamsWorkspace | transport_gdx.a = db.add_parameter_dc("a", [i], "capacity of plant i in cases") |
transport_gdx.value | |
GamsWorkspace | transport_gdx.b = db.add_parameter_dc("b", [j], "demand at market j in cases") |
GamsWorkspace | transport_gdx.d = db.add_parameter_dc("d", [i, j], "distance in thousands of miles") |
GamsWorkspace | transport_gdx.f = db.add_parameter("f", 0, "freight in dollars per case per thousand miles") |
GamsWorkspace | transport_gdx.db2 = ws.add_database_from_gdx("data.gdx") |
Detailed Description
This example shows the use of the GamsDatabase class for reading and writing GDX files.
In particular this example shows:
- How to fill a GamsDatabase from Python data structures and export it to a GDX file
- How to import a GDX file as a GamsDatabase
Definition in file transport_gdx.py.