First we import all necessary files.
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from indra.composite import Composite
from indra.display_methods import TAN, GRAY
from indra.env import Env
from indra.registry import get_prop, get_group, get_env
from indra.space import in_hood
from indra.utils import init_props
from models.wolfsheep import set_up
We then initialize global variables.
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MODEL_NAME = "wolfsheep"
DEBUG = False # turns debugging code on or off
DEBUG2 = False # turns deeper debugging code on or off
NUM_WOLVES = 8
NUM_SHEEP = 20
HOOD_SIZE = 3
MEADOW_HEIGHT = 10
MEADOW_WIDTH = 10
WOLF_LIFESPAN = 5
WOLF_REPRO_PERIOD = 6
SHEEP_LIFESPAN = 8
SHEEP_REPRO_PERIOD = 3
AGT_WOLF_NAME = "wolf"
AGT_SHEEP_NAME = "sheep"
WOLF_GROUP = "wolves"
SHEEP_GROUP = "sheep"
ERR_MSG = "Invalid agent name"
wolves_created = 0
sheep_created = 0
Next we call the set_up function to set up the environment, groups, and agents of the model.
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set_up()
You can run the model N periods by typing the number you want in the following function and then running it.
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Env("meadow", members=members,
.runN()
You can view the position of all of the agents in space with the following command:
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Env("meadow", members=members,
.scatter_graph()
You can view the line graph through the following command:
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Env("meadow", members=members,
.line_graph()