csss-beedza/Source/helper-functions.nls
2013-07-17 11:33:47 +02:00

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;; Helper functions ;;
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; beekeep-utility = honey-quant * (honey-price - prod-cost) - (travel-cost * distance * vehicles) - moving-cost
to-report beekeep-utility [ha hi d]
report (honey-quant ha hi) * ((honey-price hi) - prod-cost) - (travel-cost * d)
end
to-report honey-price [ hi ]
if hi = "PF" [ report 3.48 ] ; Polyflower
if hi = "AC" [ report 4.65 ] ; Accacia
if hi = "LM" [ report 4.65 ] ; Lime
if hi = "SF" [ report 2.32 ] ; Sunflower
; the following shouldn't happen
error 1
end
to-report prod-cost
report 100 / 25000 ; 1 hive = 25000 bees
end
; honey-quant = (bees-quant - 10000) * harv-index * uncertainty
to-report honey-quant [ ha hi ]
report ((bees-quant ha) - 10000) * (harv-index hi) * uncertainty
end
to-report harv-index [ hi ]
if hi = "PF" [ report 0.000004 ] ; Polyflower
if hi = "AC" [ report 0.0000135 ] ; Accacia
if hi = "LM" [ report 0.000018 ] ; Lime
if hi = "SF" [ report 0.000006 ] ; Sunflower
; the following shouldn't happen
error 1
end
to-report uncertainty
report random-normal 1.0 harvesting-uncertainty
end
to-report bees-quant [ hive-age ]
ifelse hive-age <= 21
[ report 2000 * hive-age + 27000 ]
[ report 500 * hive-age + 65000 ]
end
to-report color-flower [ hi ]
if hi = "PF" [ report VIOLET ] ; Polyflower
if hi = "AC" [ report RED ] ; Accacia
if hi = "LM" [ report GREEN ] ; Lime
if hi = "SF" [ report YELLOW ] ; Sunflower
; the following shouldn't happen
error 1
end