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
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8 y( s* ?8 E9 i. oto find-distance
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let nodedistance 0! [* z, e+ P& F% M( A) M" O, j
let linknumber 0
4 ?. n" S: u' h1 j while [i < count turtles]3 V1 p7 Q" Z( F3 `/ O: r: i# d" Y# ^
[
" v+ l# s% G8 U8 B if link-neighbor? turtle i
4 U$ C+ ~1 n z$ q$ d# Z [set nodedistance (nodedistance + sum ([link-length] of turtle i))
& A$ N; L0 ?- {* Z2 r; _ set linknumber (linknumber + count [link-neighbors] of turtle i)]3 ^7 d' U; u/ h& s1 n
if linknumber != 02 n6 I: i9 L9 U, E) `
[
3 C1 m! i( |0 P/ L- Q* Y; E- B set average-node-distance (nodedistance / linknumber)8 f) l* V+ Y# h1 {- Q
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set i i + 1
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end
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2 g9 b7 T' [( v3 a; u7 R[ 本帖最后由 qy987 于 2008-11-12 02:18 编辑 ] |