{UTF-8}
Housing construction=
	 HCN*Housing land multiplier*Housing availability multiplier*Housing
	~ structure/year ~ |

Net births=
	 (BN-DN)*Population
	~ people/year ~ |

Business construction=
	BCN*Business land multiplier*Business labor force multiplier*Business structures
	~ structure/year ~ |

Outmigration=
	Population*OMN
	~ people/year ~ |

Inmigration=
	Population*IMN*Attractiveness from jobs multiplier*Attractvieness from housing multiplier
	~ people/year ~ |

Population= INTEG (
	Net births+Inmigration-Outmigration,
		50000)
	~ people ~ |

Area = 10000
	~ acres ~ |

Attractiveness from jobs multiplier= WITH LOOKUP (
	Labor to job ratio,
		([(0,0)-(2,2)],(0,2),(0.2,1.95),(0.4,1.8),(0.6,1.6),(0.8,1.35)
		,(1,1),(1.2,0.5),(1.4,0.3),(1.6,0.2),(1.8,0.15),(2,0.1)))
	~ fraction ~ |

Attractvieness from housing multiplier= WITH LOOKUP (
	Households to housing ratio,
		([(0,0)-(2,2)],(0,1.4),(0.2,1.4),(0.4,1.35),(0.6,1.3),(0.8,1.15)
		,(1,1),(1.2,0.8),(1.4,0.65),(1.6,0.5),(1.8,0.45),(2,0.4)))
	~ fraction ~ |

BCN = 0.07
	~ fraction/year ~ |

BDN = 0.025
	~ fraction/year ~ |

BN = 0.03
	~ fraction/year ~ |

Business demolition = BDN*Business structures
	~ structure/year ~ |

Business labor force multiplier= WITH LOOKUP (
	Labor to job ratio,
		([(0,0)-(2,2)],(0,0.2),(0.2,0.25),(0.4,0.35),(0.6,0.5),
		(0.8,0.7),(1,1),(1.2,1.35),(1.4,1.6),(1.6,1.8),(1.8,1.95),(2,2)))
	~ fraction ~ |

Business land multiplier= WITH LOOKUP (
	Land fraction occupied,
		([(0,0)-(1,2)],(0,1),(0.1,1.15),(0.2,1.3),(0.3,1.4),(0.4,1.45)
		,(0.5,1.4),(0.6,1.3),(0.7,0.9),(0.8,0.5),(0.9,0.25),(1,0)))
	~ fraction ~ |

Business structures = INTEG(Business construction-Business demolition,1000)
	~ structure ~ |

DN = 0.015
	~ fraction/year ~ |

HCN = 0.07
	~ fraction/year ~ |

HDN = 0.015
	~ fraction/year ~ |

Households to housing ratio = (Population/HS)/Housing
	~ family/structure ~ |

Housing = INTEG(Housing construction-Housing demolition,14000)
	~ structure ~ |

Housing availability multiplier= WITH LOOKUP (
	Households to housing ratio,
		([(0,0)-(2,2)],(0,0.2),(0.2,0.25),(0.4,0.35),(0.6,0.5),(0.8,0.7)
		,(1,1),(1.2,1.35),(1.4,1.6),(1.6,1.8),(1.8,1.95),(2,2)))
	~ fraction ~ |

Housing demolition = HDN*Housing
	~ structure/year ~ |

Housing land multiplier= WITH LOOKUP (
	Land fraction occupied,
		([(0,0)-(1,2)],(0,0.4),(0.1,0.7),(0.2,1),(0.3,1.25),(0.4,1.45)
		,(0.5,1.5),(0.6,1.5),(0.7,1.4),(0.8,1),(0.9,0.5),(1,0)))
	~ fraction ~ |

HS = 4
	~ people/family ~ |

IMN = 0.1
	~ fraction/year ~ |

Jobs = JPBS*Business structures
	~ job ~ |

JPBS = 18
	~ job/structure ~ |

Labor force = LPF*Population
	~ people ~ |

Labor to job ratio = Labor force/Jobs
	~ people/job ~ |

Land fraction occupied = (Business structures*LPBS + Housing*LPH)/Area
	~ fraction ~ |

LPBS = 0.2
	~ acres/structure ~ |

LPF = 0.35
	~ fraction ~ |

LPH = 0.1
	~ acres/structure ~ |

OMN = 0.07
	~ fraction/year ~ |

********************************************************
	.Control
********************************************************~
		Simulation Control Paramaters
	|

FINAL TIME  = 100
	~ year
	~ The final time for the simulation. |

INITIAL TIME  = 0
	~ year
	~ The initial time for the simulation. |

SAVEPER  = 
        TIME STEP 
	~ year
	~ The frequency with which output is stored. |

TIME STEP  = 0.125
	~ year
	~ The time step for the simulation. |

\\\---/// Sketch information - do not modify anything except names
V300  Do not put anything below this section - it will be ignored
*View 1
$192-192-192,0,Geneva|9||0-0-0|0-0-0|0-0-255|-1--1--1|-1--1--1|96,96,100,0
10,1,Business structures,432,119,53,27,3,3,0,26,0,0,0,0,-1--1--1,0-0-0,|12|B|0-0-0
10,2,Housing,237,404,53,27,3,3,0,26,0,0,0,0,-1--1--1,0-0-0,|12|B|0-0-0
10,3,Population,747,400,53,27,3,3,0,26,0,0,0,0,-1--1--1,0-0-0,|12|B|0-0-0
10,4,Land fraction occupied,223,249,68,20,8,3,1,26,0,0,0,0,-1--1--1,0-0-0,|12|B|0-0-0
10,5,Business land multiplier,184,80,60,20,8,3,1,26,0,0,0,0,-1--1--1,0-0-0,|12||0-0-0
10,6,Housing land multiplier,97,308,56,20,8,3,3,26,0,0,0,0,-1--1--1,0-0-0,|12||0-0-0
10,7,Jobs,529,233,21,12,8,3,2,26,0,0,0,0,-1--1--1,0-0-0,|12||0-0-0
10,8,Labor force,668,312,51,12,8,3,2,26,0,0,0,0,-1--1--1,0-0-0,|12||0-0-0
10,9,Labor to job ratio,681,227,61,20,8,3,2,26,0,0,0,0,-1--1--1,0-0-0,|12|B|0-0-0
10,10,Households to housing ratio,479,520,71,20,8,3,3,26,0,0,0,0,-1--1--1,0-0-0,|12|B|0-0-0
10,11,Housing availability multiplier,192,565,52,29,8,3,3,26,0,0,0,0,-1--1--1,0-0-0,|12||0-0-0
10,12,Attractvieness from housing multiplier,768,597,67,29,8,3,3,26,0,0,0,0,-1--1--1,0-0-0,|12||0-0-0
10,13,Attractiveness from jobs multiplier,831,261,67,29,8,3,2,26,0,0,0,0,-1--1--1,0-0-0,|12||0-0-0
10,14,Business labor force multiplier,561,64,72,20,8,3,2,26,0,0,0,0,-1--1--1,0-0-0,|12||0-0-0
10,15,Area,116,191,23,12,0,3,1,26,0,0,0,0,-1--1--1,0-0-0,|12||0-0-0
10,16,HCN,51,497,19,12,0,3,4,26,0,0,0,0,-1--1--1,0-0-0,|12||0-0-0
10,17,IMN,916,500,17,12,0,3,4,26,0,0,0,0,-1--1--1,0-0-0,|12||0-0-0
10,18,OMN,581,465,20,12,8,3,4,26,0,0,0,0,-1--1--1,0-0-0,|12||0-0-0
10,19,HDN,356,523,19,12,0,3,4,26,0,0,0,0,-1--1--1,0-0-0,|12||0-0-0
10,20,JPBS,481,287,24,12,0,3,4,26,0,0,0,0,-1--1--1,0-0-0,|12||0-0-0
10,21,BDN,663,151,19,12,0,3,4,26,0,0,0,0,-1--1--1,0-0-0,|12||0-0-0
10,22,LPF,579,339,17,12,0,3,4,26,0,0,0,0,-1--1--1,0-0-0,|12||0-0-0
10,23,BCN,217,151,19,12,0,3,4,26,0,0,0,0,-1--1--1,0-0-0,|12||0-0-0
10,24,BN,645,549,13,12,8,3,4,26,0,0,0,0,-1--1--1,0-0-0,|12||0-0-0
10,25,DN,600,513,13,12,0,3,4,26,0,0,0,0,-1--1--1,0-0-0,|12||0-0-0
10,26,LPBS,377,281,24,12,0,3,4,26,0,0,0,0,-1--1--1,0-0-0,|12||0-0-0
10,27,LPH,329,320,19,12,0,3,4,26,0,0,0,0,-1--1--1,0-0-0,|12||0-0-0
10,28,HS,479,609,13,12,0,3,4,26,0,0,0,0,-1--1--1,0-0-0,|12||0-0-0
1,29,1,64,2,0,0,0,0,0,0,-1--1--1,,1|(341,164)|
1,30,1,71,2,0,0,0,0,0,0,-1--1--1,,1|(487,169)|
1,31,1,4,1,1,0,0,0,0,0,-1--1--1,,1|(393,228)|
1,32,2,4,1,3,0,0,0,0,0,-1--1--1,,1|(241,325)|
1,33,4,5,1,1,0,0,0,0,0,-1--1--1,,1|(165,157)|
1,34,4,6,1,3,0,0,0,0,0,-1--1--1,,1|(149,265)|
1,35,2,76,2,0,0,0,0,0,0,-1--1--1,,1|(193,468)|
1,36,2,81,2,0,0,0,0,0,0,-1--1--1,,1|(285,469)|
1,37,1,7,2,2,0,0,0,0,0,-1--1--1,,1|(457,193)|
1,38,3,8,1,2,0,0,0,0,0,-1--1--1,,1|(703,371)|
1,39,7,9,1,2,0,0,0,0,0,-1--1--1,,1|(576,239)|
1,40,8,9,0,2,0,0,0,0,0,-1--1--1,,1|(671,281)|
1,41,2,10,1,3,0,0,0,0,0,-1--1--1,,1|(389,369)|
1,42,3,10,2,3,0,0,0,0,0,-1--1--1,,1|(543,392)|
1,43,11,76,1,3,0,0,0,0,0,-1--1--1,,1|(133,525)|
1,44,10,11,1,3,0,0,0,0,0,-1--1--1,,1|(343,595)|
1,45,10,12,1,3,0,0,0,0,0,-1--1--1,,1|(607,595)|
1,46,9,13,2,2,0,0,0,0,0,-1--1--1,,1|(788,201)|
1,47,9,14,2,2,0,0,0,0,0,-1--1--1,,1|(704,139)|
1,48,15,4,0,1,0,0,0,0,0,-1--1--1,,1|(152,211)|
1,49,16,76,0,4,0,0,0,0,0,-1--1--1,,1|(69,477)|
1,50,19,81,0,4,0,0,0,0,0,-1--1--1,,1|(353,491)|
1,51,20,7,0,4,0,0,0,0,0,-1--1--1,,1|(497,267)|
1,52,21,71,1,4,0,0,0,0,0,-1--1--1,,1|(620,169)|
1,53,22,8,1,4,0,0,0,0,0,-1--1--1,,1|(624,328)|
1,54,23,64,1,4,0,0,0,0,0,-1--1--1,,1|(249,160)|
1,55,24,88,0,4,0,0,0,0,0,-1--1--1,,1|(664,533)|
1,56,25,88,0,4,0,0,0,0,0,-1--1--1,,1|(624,511)|
1,57,27,4,0,4,0,0,0,0,0,-1--1--1,,1|(289,293)|
1,58,26,4,0,4,0,0,0,0,0,-1--1--1,,1|(331,272)|
1,59,28,10,0,4,0,0,0,0,0,-1--1--1,,1|(479,577)|
12,60,48,252,113,11,11,0,3,0,0,-1,0,0,0
1,61,63,1,4,0,0,22,0,0,0,-1--1--1,,1|(355,115)|
1,62,63,60,100,0,0,22,0,0,0,-1--1--1,,1|(291,115)|
11,63,48,325,115,7,11,34,3,0,0,1,0,0,0
10,64,Business construction,325,145,56,20,40,3,0,26,0,0,0,0,-1--1--1,0-0-0,|12||0-0-0
1,65,5,63,1,1,0,0,0,64,0,-1--1--1,,1|(261,64)|
1,66,14,63,1,2,0,0,0,64,0,-1--1--1,,1|(421,56)|
12,67,48,629,117,11,11,0,3,0,0,-1,0,0,0
1,68,70,67,4,0,0,22,0,0,0,-1--1--1,,1|(589,117)|
1,69,70,1,100,0,0,22,0,0,0,-1--1--1,,1|(515,117)|
11,70,48,552,117,8,11,34,3,0,0,1,0,0,0
10,71,Business demolition,552,148,48,20,40,3,0,26,0,0,0,0,-1--1--1,0-0-0,|12||0-0-0
12,72,48,55,409,11,11,0,3,0,0,-1,0,0,0
1,73,75,2,4,0,0,22,0,0,0,-1--1--1,,1|(152,407)|
1,74,75,72,100,0,0,22,0,0,0,-1--1--1,,1|(85,407)|
11,75,48,113,407,8,11,34,3,0,0,1,0,0,0
10,76,Housing construction,113,437,56,20,40,3,0,26,0,0,0,0,-1--1--1,0-0-0,|12||0-0-0
12,77,48,411,405,11,11,0,3,0,0,-1,0,0,0
1,78,80,77,4,0,0,22,0,0,0,-1--1--1,,1|(379,404)|
1,79,80,2,100,0,0,22,0,0,0,-1--1--1,,1|(316,404)|
11,80,48,351,404,8,11,34,3,0,0,1,0,0,0
10,81,Housing demolition,351,435,48,20,40,3,0,26,0,0,0,0,-1--1--1,0-0-0,|12||0-0-0
12,82,48,584,396,11,11,0,3,0,0,-1,0,0,0
12,83,48,924,393,11,11,0,3,0,0,-1,0,0,0
12,84,48,759,552,11,11,0,3,0,0,-1,0,0,0
1,85,87,3,4,0,0,22,0,0,0,-1--1--1,,1|(756,461)|
1,86,87,84,100,0,0,22,0,0,0,-1--1--1,,1|(756,527)|
11,87,48,756,504,11,8,33,3,0,0,2,0,0,0
10,88,Net births,700,504,45,12,40,3,0,26,0,0,0,0,-1--1--1,0-0-0,|12||0-0-0
1,89,6,75,1,3,0,0,0,64,0,-1--1--1,,1|(85,352)|
1,90,92,82,4,0,0,22,0,0,0,-1--1--1,,1|(615,396)|
1,91,92,3,100,0,0,22,0,0,0,-1--1--1,,1|(672,396)|
11,92,252,643,396,8,11,34,3,0,0,1,0,0,0
10,93,Outmigration,643,419,57,12,40,3,0,8,-1,0,0,0,0-0-0,0-0-0,|12||0-0-0
1,94,18,93,0,4,0,0,0,64,0,-1--1--1,,1|(603,447)|
1,95,3,93,1,0,0,0,0,64,0,-1--1--1,,1|(697,456)|
1,96,98,3,4,0,0,22,0,0,0,-1--1--1,,1|(823,393)|
1,97,98,83,100,0,0,22,0,0,0,-1--1--1,,1|(888,393)|
11,98,412,855,393,8,11,34,3,0,0,1,0,0,0
10,99,Inmigration,855,416,52,12,40,3,0,8,-1,0,0,0,0-0-0,0-0-0,|12||0-0-0
1,100,13,98,1,2,0,0,0,64,0,-1--1--1,,1|(857,313)|
1,101,17,99,0,4,0,0,0,64,0,-1--1--1,,1|(891,465)|
1,102,12,99,1,3,0,0,0,64,0,-1--1--1,,1|(825,545)|
1,103,3,87,1,0,0,0,0,64,0,-1--1--1,,1|(803,471)|
1,104,3,98,1,0,0,0,0,64,0,-1--1--1,,1|(799,348)|
\\\---/// Sketch information - do not modify anything except names
V300  Do not put anything below this section - it will be ignored
*View 2
$192-192-192,0,Times New Roman|12||0-0-0|0-0-0|0-0-255|-1--1--1|-1--1--1|96,96,0,0
///---\\\
:GRAPH URBAN1
:TITLE URBAN1
:WIP
:X-DIV 4
:MAX-POINTS 2000
:SCALE
:VAR Population
:LINE-WIDTH 3
:SCALE
:VAR Business structures
:LINE-WIDTH 2
:SCALE
:VAR Housing
:LINE-WIDTH 2

:GRAPH Land_and_People_Ratios
:TITLE Land and People Ratios
:X-DIV 5
:SCALE
:VAR Land fraction occupied
:SCALE
:VAR Labor to job ratio
:VAR Households to housing ratio
:L<%^E!@
9:urban1 base
15:0,0,0,0,0,0
19:100,0
27:2,
34:0,
4:Time
5:Attractiveness from jobs multiplier
24:0
25:100
26:100