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arc2360

金虫 (小有名气)

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虫号: 729055
注册: 2009-03-23
专业: 食品科学基础

[求助] 求助检查一个简单SAS编程（将两条曲线放一个图形中）

求大师帮忙看下面程序，前面是两条非线性曲线的拟合，后面想把两条曲线放一个图中，但程序运行后没有显示，求助求助，谢谢！！
Data L1; input t y @@; cards;                                                                                                                   0 3.804 24 3.877 48 3.930 72 5.01 96 5.959 120 5.813 144 6.55 168 7.094 192 7.587 216 6.8 240 6.82 264 7.084 288 7.065
;
Proc nlin method=Marquardt;
Parms Y0=3 to 4 by 0.05  Ymax=6.5 to 7.5 by 0.1  u=0.01 to 0.05 by 0.005  M=100 to 150 by 5;
Temp=exp(-u*(t-M));
model y=Y0+(Ymax-Y0) * exp(-exp(-u * (t-M)));
der.Y0=1-exp(-temp);
der.Ymax=exp(-temp);
der.u=(Ymax-Y0) * exp(-temp) * (t-M) * temp;
der.M=(Ymax-Y0) * exp(-temp) * u * (-temp);
output out=expout p=py1;
run;
Data L1; input t y @@; cards;                                                                                                                   0 3.804 24 3.877 48 3.930 72 5.01 96 5.959 120 5.813 144 6.55 168 7.094 192 7.587 216 6.8 240 6.82 264 7.084 288 7.065
;
Proc nlin method= Marquardt;
Parms Y0=3 to 4 by 0.05  Ymax=6.5 to 7.5 by 0.1  u=0.01 to 0.05 by 0.005  M=55 to 85 by 5;
Temp=exp(-u*(t-M));
model y=Y0+(Ymax-Y0)/(1+exp(-u * (t-M)));
der.Y0=1-1/(1+temp);
der.Ymax=1/(1+temp);
der.u=(Ymax-Y0) * temp * (t-M)/((1+temp)*(1+temp));
der.M=-(Ymax-Y0) * u * temp/((1+temp)*(1+temp));
output out=expout p=py2;
run;
goptions reset=global gunit=pct cback=white border
htitle=6 htext=3  ftext=swissb colors=(back);
proc gplot data=expout;
plot y*t py1*t  py2*t /haxis=axis1 vaxis=axis2  overlay;
symbol1 i=none v=plus cv=red h=2.5 w=2;
symbol2 i=join v=none l=1 h=2.5 w=2;
axis1 order=0 to 300 by 20;
axis2 order=3 to 8 by 0.5;
title1 'y=Y0+(Ymax-Y0)*exp(-exp(-u*(t-M)))' ;
title2 ' y=Y0+(Ymax-Y0)/(1+exp(-u * (t-M)))' ;
title3 'proc nlin method= Levenberg-Marquardt ';
run;

[ Last edited by arc2360 on 2012-3-21 at 21:51 ]

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