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发表于 2010-5-11 13:19:52
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用list吧3 R& `6 M& V6 F2 f0 R+ E Z
patches-own [wealth rank]8 T7 m: e+ e, ]
to setup1 k3 k2 I* Y4 \- R- G; i& C0 B
ca" i8 n( b% J& O6 A1 X
ask patches [set wealth random 100 set pcolor green ]
' {/ s# Y! C: a( \1 Z( nend. G; j: T. x' p
! ]6 z- |% C7 b _. @: u
to go
6 f) U7 U1 R2 b! J7 N let mylist1 []- x* n; W3 J3 L2 y9 ]8 x
set mylist1 sort-by [[wealth] of ?1 < [wealth] of ?2] patches
3 z1 R p7 } f" l3 }! n) F let mylist2 []+ W5 a1 k% }0 L# i
set mylist2 n-values count patches [? + 1]
4 T0 z# Z* E( n) P; g
H7 e/ C7 O% U9 e3 f/ X J7 v ( foreach mylist1 mylist24 Q8 C3 U" ~9 w( h1 N6 l
[
, N& i1 ~) a( O% p9 D4 T5 {% H ask ?1[ set rank ?2]5 l- V, N/ E% i: ]+ V0 r7 j" C, K
show [rank] of ?1
* B4 z8 M& m" Q7 p! d! { : N" C3 a) p. J5 t
]% N- z+ ?/ s: ^: |) }
)! b+ e4 ]# p2 S7 {) O3 E2 |
let mylist3 []9 |2 p: ?. k) @4 Z: H2 g
; T! K& O0 v1 E4 a- c set mylist3 sort-by [[rank] of ?1 < [rank] of ?2] patches: u, @, x8 U7 z4 {
show count patches
9 L( a6 a; F r$ l0 r L/ V E" K show mylist1
[- D' _' h2 l) Y0 i: c* e0 V show mylist3
% z9 z! L8 M% ~5 U7 Oend2 L$ I7 p3 U$ n2 y! K1 }4 _( `
. }$ J+ j4 Z9 I/ u+ q H) \- l
这时的mylist1 和mylist3 应该是一样的 |
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