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标题: 转:11月11日光棍节的礼物! [打印本页]

作者: shiyiming    时间: 2010-11-7 22:28
标题: 转:11月11日光棍节的礼物!
From crackman's blog on Baidu


               
                data dies; <br>
do t=0 to 60 by 1;pi=constant('pi'); <br>
x1=0.01*(-t*t+40*t+1200)*sin(pi*t/180); <br>
x2=-0.01*(-t*t+40*t+1200)*sin(pi*t/180); <br>
y=0.01*(-t*t+40*t+1200)*cos(pi*t/180); <br>
output; <br>
end; <br>
proc sgplot data=dies; <br>
plot y*x1=1 y*x2=1/overlay; <br>
symbol1 c=red w=3 i=join; <br>
run; <br>
               
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