我似乎不明白为什么我会收到此错误。我尝试在get-earlywarn程序中放置ask代理，但它似乎不起作用。它是由ask n-of n代理引起的吗？我应该把它放在一个单独的程序中吗？
以下是代码：
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; FOR ALL MODELS
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; VARIABLES
globals
[
percent-agri
basin-area
agri-volume
yield-max
water-requirement
price-rice
agri-cost
month-rainfall
drought
month
d
n
p
total-income
]
breed [agents agent]
agents-own
[
agent-id-sw
agent-landarea-sw
agehh-sw
district-sw
pcons-sw
earlywarn-sw
pprob-sw
reach
agent-received
agent-demand
agent-volumestored
agent-volumeused
agent-yield-sw
agent-income-sw
y
store-capacity
]
; SETUP
to setup
clear-all
define-month
set month-rainfall 848.5 ;; max rainfall from 2011 to 2014 in the river basin
define-agri-volume
set percent-agri 0.17 ;; assumes 17% of water from river basin is allocated for agriculture use
set basin-area 9.205e+15 ;; 9.205e+15 sq mm of surface area
set yield-max 6.15 ;; 6.15 tons of rice/ha
set water-requirement 528 ;; 528 cubic m/ton of rice
set price-rice 8963.10 ;; 8,963.10 VND per ton of rice
set agri-cost 500000 ;; 500,000 VND per cropping season
end
to define-month
if (ticks = 1) or (ticks = 13) or (ticks = 25) or (ticks = 37) or (ticks = 49) or (ticks = 61) or (ticks = 73) or (ticks = 85) or (ticks = 97) or (ticks = 109)
[
set month "JANUARY"
]
if (ticks = 2) or (ticks = 14) or (ticks = 26) or (ticks = 38) or (ticks = 50) or (ticks = 62) or (ticks = 74) or (ticks = 86) or (ticks = 98) or (ticks = 110)
[
set month "FEBRUARY"
]
if (ticks = 3) or (ticks = 15) or (ticks = 27) or (ticks = 39) or (ticks = 51) or (ticks = 63) or (ticks = 75) or (ticks = 87) or (ticks = 99) or (ticks = 111)
[
set month "MARCH"
]
if (ticks = 4) or (ticks = 16) or (ticks = 28) or (ticks = 40) or (ticks = 52) or (ticks = 64) or (ticks = 76) or (ticks = 88) or (ticks = 100) or (ticks = 112)
[
set month "APRIL"
]
if (ticks = 5) or (ticks = 17) or (ticks = 29) or (ticks = 41) or (ticks = 53) or (ticks = 65) or (ticks = 77) or (ticks = 89) or (ticks = 101) or (ticks = 113)
[
set month "MAY"
]
if (ticks = 6) or (ticks = 18) or (ticks = 30) or (ticks = 42) or (ticks = 54) or (ticks = 66) or (ticks = 78) or (ticks = 90) or (ticks = 102) or (ticks = 114)
[
set month "JUNE"
]
if (ticks = 7) or (ticks = 19) or (ticks = 31) or (ticks = 43) or (ticks = 55) or (ticks = 67) or (ticks = 79) or (ticks = 91) or (ticks = 103) or (ticks = 115)
[
set month "JULY"
]
if (ticks = 8) or (ticks = 20) or (ticks = 32) or (ticks = 44) or (ticks = 56) or (ticks = 68) or (ticks = 80) or (ticks = 92) or (ticks = 104) or (ticks = 116)
[
set month "AUGUST"
]
if (ticks = 9) or (ticks = 21) or (ticks = 33) or (ticks = 45) or (ticks = 57) or (ticks = 69) or (ticks = 81) or (ticks = 93) or (ticks = 105) or (ticks = 117)
[
set month "SEPTEMBER"
]
if (ticks = 10) or (ticks = 22) or (ticks = 34) or (ticks = 46) or (ticks = 58) or (ticks = 70) or (ticks = 82) or (ticks = 94) or (ticks = 106) or (ticks = 118)
[
set month "OCTOBER"
]
if (ticks = 11) or (ticks = 23) or (ticks = 35) or (ticks = 47) or (ticks = 59) or (ticks = 71) or (ticks = 83) or (ticks = 95) or (ticks = 107) or (ticks = 119)
[
set month "NOVEMBER"
]
if (ticks = 12) or (ticks = 24) or (ticks = 36) or (ticks = 48) or (ticks = 60) or (ticks = 72) or (ticks = 84) or (ticks = 96) or (ticks = 108) or (ticks = 120)
[
set month "DECEMBER"
]
end
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;STORE WATER MODEL
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; RUN MODEL
to go-sw
tick
define-agents-sw
define-agri-volume
get-earlywarn
define-received
define-demand
store-water
use-storedwater
define-yield-sw
define-income-sw
define-total-income
if ticks = 121 [stop]
end
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; INPUT DATA
to define-agents-sw
create-agents 111
ask agents [hide-turtle]
random-seed new-seed
file-open "agent_id_sw.txt"
foreach sort agents [ask ? [set agent-id-sw file-read] ]
file-close
file-open "landarea_sw.txt"
foreach sort agents [ask ? [set agent-landarea-sw file-read] ]
file-close
file-open "agehh_sw.txt"
foreach sort agents [ask ? [set agehh-sw file-read] ]
file-close
file-open "district_sw.txt"
foreach sort agents [ask ? [set district-sw file-read] ]
file-close
file-open "pcons_sw.txt"
foreach sort agents [ask ? [set pcons-sw file-read] ]
file-close
file-open "earlywarn_sw.txt"
foreach sort agents [ask ? [set earlywarn-sw file-read] ]
file-close
file-open "pprob_sw.txt"
foreach sort agents [ask ? [set pprob-sw file-read] ]
file-close
end
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
; STORE WATER PROCESS
to define-agri-volume
set d random 0.9676 ;; or set d random 1
ifelse d >= 0.8998
[
set agri-volume (month-rainfall * (1 - d) * basin-area * percent-agri)
set drought "DROUGHT"
]
[
set agri-volume (month-rainfall * (1 - d) * basin-area * percent-agri)
set drought "NODROUGHT"
]
end
to get-earlywarn
if drought = "DROUGHT"
[
ifelse (ticks = 1) or (ticks = 13) or (ticks = 25) or (ticks = 37) or (ticks = 49) or (ticks = 61) or (ticks = 73) or (ticks = 85) or (ticks = 97) or (ticks = 109) or (ticks = 7) or (ticks = 19) or (ticks = 31) or (ticks = 43) or (ticks = 55) or (ticks = 67) or (ticks = 79) or (ticks = 91) or (ticks = 103) or (ticks = 115)
[
set n random 111
;; n of agents reached by early warning system decided at the start of each cropping season
set p random 4
]
[
set n n
set p p
]
ask n-of n agents
[
set pprob-sw pprob-sw + p
set y (-0.591 * agehh-sw) + (-0.605 * district-sw) + (-0.249 * pcons-sw) + (2.223 * earlywarn-sw) + (-0.615 * pprob-sw) ;; y is computed y-hat from logistic regression
;; constant numbers are estimates from logistic regression
]
ifelse agents = n-of n agents
[set reach "REACHED"]
[set reach "NOTREACHED"]
ifelse reach = "REACHED"
[
ifelse y >= 0.5
[
store-water
use-storedwater
]
[
ifelse agent-received > agent-demand
[set agent-volumeused agent-demand]
[set agent-volumeused agent-received]
set agent-volumestored 0
]
]
[
ifelse agent-received > agent-demand
[set agent-volumeused agent-demand]
[set agent-volumeused agent-received]
set agent-volumestored 0
]
]
if drought = "NODROUGHT"
[
ifelse agent-received > agent-demand
[set agent-volumeused agent-demand]
[set agent-volumeused agent-received]
set agent-volumestored 0
]
end
to define-received
set agent-received agri-volume * agent-landarea-sw / sum [agent-landarea-sw] of agents
end
to define-demand
set agent-demand yield-max * water-requirement * agent-landarea-sw
end
to store-water
set store-capacity random 1000
ifelse agent-received > agent-demand
[
let dif1 agent-received - agent-demand ;; assumes that stored water only comes from excess of received
ifelse dif1 >= store-capacity
[set agent-volumestored agent-volumestored + store-capacity]
[set agent-volumestored agent-volumestored + dif1]
]
[set agent-volumestored agent-volumestored]
end
to use-storedwater
let dif2 agent-demand - agent-received
ifelse agent-received < agent-demand
[
ifelse agent-volumestored > dif2
[
set agent-volumeused agent-received + dif2
set agent-volumestored agent-volumestored - dif2
]
[
if agent-volumestored > 0
[
set agent-volumeused agent-received + agent-volumestored
set agent-volumestored 0
]
]
]
[
set agent-volumeused agent-received
set agent-volumestored agent-volumestored - 0
]
end
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; GET OUTPUT
to define-yield-sw
ask agents
[
if (ticks = 6) or (ticks = 18) or (ticks = 30) or (ticks = 42) or (ticks = 54) or (ticks = 66) or (ticks = 78) or (ticks = 90) or (ticks = 102) or (ticks = 114) or (ticks = 12) or (ticks = 24) or (ticks = 36) or (ticks = 48) or (ticks = 60) or (ticks = 72) or (ticks = 84) or (ticks = 96) or (ticks = 108) or (ticks = 120) ;; assumes 2 cropping seasons per year
[ifelse agent-volumeused >= agent-demand
[set agent-yield-sw agent-yield-sw + (yield-max * agent-landarea-sw) / 6]
[
set agent-yield-sw agent-yield-sw +
(6.15 * agent-landarea-sw * sum [agent-volumeused] of agents / sum [agent-demand] of agents) / 6
]
]
]
end
to define-income-sw
ask agents
[
if (ticks = 6) or (ticks = 18) or (ticks = 30) or (ticks = 42) or (ticks = 54) or (ticks = 66) or (ticks = 78) or (ticks = 90) or (ticks = 102) or (ticks = 114) or (ticks = 12) or (ticks = 24) or (ticks = 36) or (ticks = 48) or (ticks = 60) or (ticks = 72) or (ticks = 84) or (ticks = 96) or (ticks = 108) or (ticks = 120)
[set agent-income-sw (agent-yield-sw * price-rice) - agri-cost]
]
end
to define-total-income
if (ticks = 6) or (ticks = 18) or (ticks = 30) or (ticks = 42) or (ticks = 54) or (ticks = 66) or (ticks = 78) or (ticks = 90) or (ticks = 102) or (ticks = 114) or (ticks = 12) or (ticks = 24) or (ticks = 36) or (ticks = 48) or (ticks = 60) or (ticks = 72) or (ticks = 84) or (ticks = 96) or (ticks = 108) or (ticks = 120)
[set total-income sum [agent-income-sw] of agents]
end
答案 0 :(得分：1)
您正在获取错误代码＆＃34;无法在观察者环境中使用XXX，因为只有海龟＆＃34;因为代码中的某个地方你只要求一只乌龟命令（例如 前进 或 设定年龄X 当年龄由乌龟拥有时）但不直接与乌龟拥有。就像我做一个go命令说：
to go
fd 1
end
而不是：
to go
ask turtles [fd 1]
end
至于你的代码，在没有看到谁拥有什么以及全局变量是什么的情况下，我猜测它是你所要求的代码（关于get-earlywarn的中途）：
ifelse reach = "REACHED"
[
ifelse y >= 0.5
[
store-water
use-storedwater
]....................
我认为你不会在那时向任何特工询问。如果您提出问问代理人[事先应该帮助。
P.S。如果你给出完整的代码，请确保包括globals / etc，如果可以的话。或者，将问题缩小范围要好得多。
编辑：是的。既然你把整个代码放了，它肯定是我认为的问题。你问ifelse到达....没有要求任何海龟。