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cooooldog

铁杆木虫 (著名写手)

ส็็็

[交流] 运行这段代码到出图片,你的电脑用了多久? 已有14人参与

测试一下Mathematica的效率:
CODE:
ClearAll["Global`*"];
t0 = AbsoluteTime[];
list = {{0, 0}};
last = {{0}, {0}};
GetNextPoint[pt_] := Module[{r,
   t1 = {{0.83, 0.03}, {-0.03, 0.86}}, p1 = {0, 1.5},
   t2 = {{0.2, -0.25}, {0.21, 0.23}}, p2 = {0, 1.5},
   t3 = {{-0.15, 0.27}, {0.25, 0.26}}, p3 = {0, 0.45},
   t4 = {{0, 0}, {0, 0.17}}, p4 = {0, 0}},
  r = Random[];
  If[r <= 0.85, t1.pt + p1,
   If[r <= 0.91, t2.pt + p2, If[r <= 0.99, t3.pt + p3, t4.pt + p4]]]]
For[i = 0, i < 100000, i++, last = GetNextPoint[last];
list = Append[list, First[Transpose[last]]];]
h = ListPlot[list, PlotStyle -> {PointSize[0.002], Red},
   Axes -> False];
range = First /@ Differences /@ (PlotRange /. Options[h]);
Show[h, AspectRatio -> Last@range/First@range]
Print[AbsoluteTime[] - t0]

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chyanog

金虫 (小有名气)

引用回帖:
25楼: Originally posted by 戴钢盔的猪头 at 2014-09-30 23:39:23
教材上有的
...

是什么教材啊?
27楼2014-10-06 22:58:37
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mshwangg

至尊木虫 (正式写手)

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小木虫: 金币+0.5, 给个红包,谢谢回帖
运行这段代码到出图片,你的电脑用了多久?
牛人啊,树叶挺漂亮
还可以画别的吗?分享下
2楼2014-09-15 23:08:18
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walk1997

金虫 (著名写手)

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21.0682050
mshwangg 的机器是AMD的cpu?
3楼2014-09-17 08:43:56
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zzs510

铜虫 (初入文坛)


★
小木虫: 金币+0.5, 给个红包,谢谢回帖
ClearAll["Global`*"];
t0 = AbsoluteTime[];
list = {{0, 0}};
last = {{0}, {0}};
GetNextPoint[pt_] := Module[{r,
   t1 = {{0.83, 0.03}, {-0.03, 0.86}}, p1 = {0, 1.5},
   t2 = {{0.2, -0.25}, {0.21, 0.23}}, p2 = {0, 1.5},
   t3 = {{-0.15, 0.27}, {0.25, 0.26}}, p3 = {0, 0.45},
   t4 = {{0, 0}, {0, 0.17}}, p4 = {0, 0}},
  r = Random[];
  If[r <= 0.85, t1.pt + p1,
   If[r <= 0.91, t2.pt + p2, If[r <= 0.99, t3.pt + p3, t4.pt + p4]]]]
For[i = 0, i < 100000, i++, last = GetNextPoint[last];
list = Append[list, First[Transpose[last]]];]
h = ListPlot[list, PlotStyle -> {PointSize[0.002], Red},
   Axes -> False];
range = First /@ Differences /@ (PlotRange /. Options[h]);
Show[h, AspectRatio -> Last@range/First@range]
Print[AbsoluteTime[] - t0]
4楼2014-09-17 10:31:04
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