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
% T  [0 S) c& I9 y( i& [  setup-patches
5 a0 a, l& g- t4 j* j5 r6 Q/ Q  create-turtles 100
: ]$ [- H3 `) n# k/ Z  do-plots
  ask turtles [ setxy random-xcor random-ycor ]
/ C# u# ~4 a1 G0 r  iend
* X4 D; m0 Q! jto go
* r$ ]% }  @, y& g( E8 w  move-turtles
& }7 s/ p& {  G$ i  eat-grass
6 |- T$ q4 z" S: I2 o  A  L  reproduce
  check-death
# ]- q, }( |- h  regrow-grass
0 j( E/ O1 Q* k0 ]  do-plots
end
to move-turtles
  ask turtles [
    right random 360
    forward 1
: d' k8 w. J& l, a$ J/ x    set energy energy - 1
    ]
end
to setup-patches
4 a5 V% d+ i7 g1 p  ask patches [ set pcolor green ]
end
to setup-turtles
- v+ f* y; m( v& P0 L9 b  create-turtles 100
) t* ]- `+ ^1 }# e  ask turtles [ setxy random-xcor random-ycor ]
end
to eat-grass
  ask turtles [
    if pcolor = green [
      set pcolor black
      set energy (energy + 10)
8 U9 g6 L  s" B/ n, b# d7 Y+ \! Y      ]
    ifelse show-energy?
      [ set label energy ]
4 F: E, k' F3 x, g6 O# W      [ set label "" ]
    ]
end
+ d" \) z1 g, X/ T7 G  xto reproduce
+ R: ]% |4 Z$ R6 J1 Z5 A  ask turtles [
/ n: X5 t0 W& t; d; ^, C6 \' S    if energy > 50 [
+ l6 C& f+ N0 K4 v" t: v& k      set energy energy - 50
8 g0 X- i/ n, B8 _# A: n      hatch 1 [ set energy 50 ]
      ]
( y5 {; |; w0 B, B    ]
end
" B- d. y6 }8 T9 f  m# D# F' ]# `to check-death
  ask turtles [
    if energy <= 0 [ die ]
    ]
end
+ r/ o5 F% w) Y4 n- M* Bto regrow-grass
  ask patches [
, G* T) H7 }6 c) N* Q! _    if random 100 < 3 [ set pcolor green ]
    ]
end
to do-plots
0 L8 {% n+ t& e6 u& O$ n  set-current-plot "Totals"
2 }8 F7 }# f8 G. p' \- F$ X3 [" k  set-current-plot-pen "turtles"
0 w, t3 a; B2 ]% F# k  plot count turtles
  set-current-plot-pen "grass"
9 G+ r% N1 l' a  plot count patches with [pcolor = green]
5 M/ w" ^; T8 I) g. w, t, eend
3 o0 c" u/ r. a% R, Q- |* I可是运行时提示no such plot: "Totals"
5 G4 ~+ ?/ }7 Y6 ^2 Q  [( @  T  Terror while observer running SET-CURRENT-PLOT
  called by procedure DO-PLOTS
9 b2 S/ r7 n6 e+ R0 C  called by procedure SETUP
  called by 按钮 'setup'
: a/ H- ~7 Z3 j7 M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

9 j: O) p+ G: i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。