我写的这个计算语句,调试时通过,但是运行时出现了不知名的错误/ ]9 v- F$ B% h+ {
请达人帮我指出错误好改进4 K2 T( s9 \$ n6 e* ?) P
Z3 f1 q: V L' |) \- y
to find-distance) R, E2 V& l! N* a, ^9 T- E
let i 0- q+ w9 M7 Y+ P% _7 I: S
let nodedistance 0* i: i2 u ?; e$ ^; ?
let linknumber 0# m; n( \* L. T. v& y+ o' Y; j
while [i < count turtles]
2 D; J7 `5 a9 ^( j0 Y6 ` w0 T [
k. m2 S( a; C% {5 D+ |- S if link-neighbor? turtle i! ]0 b8 t5 C, e3 Y( |2 |
[set nodedistance (nodedistance + sum ([link-length] of turtle i))
6 {1 K0 k, K$ N0 `$ A' U set linknumber (linknumber + count [link-neighbors] of turtle i)]/ \) a- F% a8 O
if linknumber != 0' u, g4 U9 f% f, d- T' m& D- H
[# M9 T5 f, z! Y _! r
set average-node-distance (nodedistance / linknumber)! h B3 |: A0 }) o
]
+ W, X& F) p4 M( r$ w set i i + 1$ u) v/ `4 C& K$ b5 c0 I2 Q
]
: W! ~" y- R* y1 X1 j5 \& pend" q' X. n6 w9 O7 J: y3 K
! i1 J8 I, D2 v+ r[ 本帖最后由 qy987 于 2008-11-12 02:18 编辑 ] |