自学中文手册时遇到了问题，求高手解答

newlove

我编的程序如下turtles-own [energy]
to setup
  clear-all
  setup-patches
  create-turtles 100
5 n, J0 V1 Y2 ^# w, o  do-plots
  ask turtles [ setxy random-xcor random-ycor ]
6 f) @! \, y7 |5 W; J1 nend
8 v7 D4 y9 I  F/ d; F1 Y) c# {3 M5 Mto go
3 Z0 S, T% t/ d( N; v  move-turtles
5 ]5 F5 [8 c$ j' v0 i6 C  eat-grass
3 h' M7 h" i1 ?/ {1 t) J" `3 F9 Y/ b* h  reproduce
  check-death
6 h$ s  f5 Y: F/ B  regrow-grass
2 d1 d: ]5 h; i* L( |) B8 S  do-plots
end
+ F4 g3 x; \6 {- j0 w( v/ Zto move-turtles
2 G" s8 T, r6 E  ask turtles [
3 z: ]2 |/ {, u    right random 360
8 L. i% \9 F6 ~9 s2 E    forward 1
    set energy energy - 1
    ]
end
to setup-patches
  ask patches [ set pcolor green ]
end
1 ?/ q% U% N5 g4 n  Q' ]9 _to setup-turtles
  i) O0 c$ ]+ V" r/ W  create-turtles 100
. `  g$ o/ n1 P  ask turtles [ setxy random-xcor random-ycor ]
6 ]2 E& w6 Y6 W4 p4 w7 Bend
" g+ r& ~) R/ G5 W) \* A- fto eat-grass
1 S) r$ O: n! f% l3 T  ask turtles [
2 n- s* a3 ~" g! g    if pcolor = green [
* _3 X' r; i' c      set pcolor black
" ~: {6 w( [5 c! f% g' l4 q# J) d      set energy (energy + 10)
      ]
    ifelse show-energy?
      [ set label energy ]
$ A" N0 |8 v( f9 A      [ set label "" ]
3 \- D9 B! M1 i3 h+ Y    ]
end
* Y  W, M9 _! M; l& Qto reproduce
, z& j) ~: f6 K+ |$ o; O  ask turtles [
    if energy > 50 [
2 d4 }1 q- k8 j! N6 A/ ^" r      set energy energy - 50
$ L: g8 q9 |/ B$ F      hatch 1 [ set energy 50 ]
      ]
% N- t4 |2 w, t" l; W    ]
end
to check-death
  ask turtles [
    if energy <= 0 [ die ]
    ]
end
to regrow-grass
  ask patches [
    if random 100 < 3 [ set pcolor green ]
    ]
end
to do-plots
  set-current-plot "Totals"
  set-current-plot-pen "turtles"
  plot count turtles
2 W& m: g  t5 }% S/ r  set-current-plot-pen "grass"
  plot count patches with [pcolor = green]
end
5 f- l  L0 q) i8 h. Y. T/ X6 d可是运行时提示no such plot: "Totals"
! ~& r2 D* |2 s: _8 D3 q+ T& Merror while observer running SET-CURRENT-PLOT
6 o3 T' ]! }6 R, P3 {3 Q6 d% B  called by procedure DO-PLOTS
  called by procedure SETUP
! ^. N* M( i* Q4 o3 p  called by 按钮 'setup'
  _! r, I1 G3 G5 H  G' c求大神解答啊

emlyn

no such plot: "Totals"，就是说你的界面里没有叫做Totals的绘图框

emlyn

建一个叫做叫做Totals的绘图框就行了

newlove

emlyn 发表于 2013-5-29 00:26
+ z- h6 K/ P& i. S7 f建一个叫做叫做Totals的绘图框就行了

哦，知道了，虽然自己应经找到问题了，不过还是谢谢哈

pichan

你也可以直接再界面页创建“绘图”，然后设置时钟(ticks)，每一步画一次，不用自己操心。