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
  do-plots
" U2 u! F2 L0 }0 I# q  ask turtles [ setxy random-xcor random-ycor ]
0 M: V9 Z  G! `3 M& Wend
to go
  move-turtles
' j7 Z4 t" [- t. I  eat-grass
2 I. [/ S- X) Y/ t% X" k9 [9 f6 e. |  reproduce
  check-death
  H! \" A9 Q  b+ W3 `( ?' @4 V  regrow-grass
  do-plots
end
/ }8 S9 a. u: g  \0 C# @to move-turtles
  ask turtles [
1 v: O- \7 q& ?% T: [( l    right random 360
- r0 L8 w; k: j- A! @    forward 1
    set energy energy - 1
3 p9 P9 c2 M! d/ X4 _& c0 |    ]
end
to setup-patches
9 ]) J. h  z, g8 m  ask patches [ set pcolor green ]
end
  w+ S; C2 p. L+ M& Wto setup-turtles
0 y* S" d7 o' R& j) }2 u  create-turtles 100
  ask turtles [ setxy random-xcor random-ycor ]
end
to eat-grass
# x- }& W  O6 z, [' @. P  ask turtles [
0 p1 [" Z. L, X: _' X- n4 M6 x, n    if pcolor = green [
      set pcolor black
      set energy (energy + 10)
      ]
- t: i* [4 @/ N    ifelse show-energy?
      [ set label energy ]
9 I* J9 _7 x" j. E) e) q/ Z      [ set label "" ]
  n& l$ L$ L" C1 ]$ [/ f& }    ]
end
1 Y- z9 }( O+ P7 d0 \0 B) ~( @4 T7 oto reproduce
6 ^1 k8 H" G0 f8 ?. |- v  ask turtles [
+ j- a4 _' n$ x7 n8 }3 f0 H1 d! C    if energy > 50 [
      set energy energy - 50
$ L) Z+ b5 r. I6 o# {! P      hatch 1 [ set energy 50 ]
7 B8 Y" `, A) j8 _      ]
    ]
end
) O9 T3 ]$ _2 Ito check-death
9 b  K( e! P5 `  F3 K( E  ask turtles [
) M9 w7 F2 S- t6 w+ p6 I4 _    if energy <= 0 [ die ]
    ]
end
' I- k- Y! ]3 Fto regrow-grass
/ C  l, R) y! A% O  ask patches [
    if random 100 < 3 [ set pcolor green ]
    ]
( ?) a0 @2 u- }6 Q) @9 S. l* T0 Yend
to do-plots
" k6 |. e, w$ P7 F  set-current-plot "Totals"
" ~& f6 d8 u+ Z1 p1 n6 D  set-current-plot-pen "turtles"
  plot count turtles
  r# P( d& F9 u  set-current-plot-pen "grass"
  plot count patches with [pcolor = green]
end
可是运行时提示no such plot: "Totals"
error while observer running SET-CURRENT-PLOT
  called by procedure DO-PLOTS
  called by procedure SETUP
  called by 按钮 'setup'
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
建一个叫做叫做Totals的绘图框就行了

1 t8 l- X$ y" j0 J# E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。