data examples ' {* V% W# S& w" _7 I6 \6 i! M# e- Tinput wft dft y; 4 `3 e' J: ~. s% U, o; kdatalines; ! r2 ?3 G% e9 m: h+ y" q
610 550 33.6 D$ ]. a: v, N: F
450 500 22.3 $ G! t% |. m6 z) ]! F4 U1 Q450 520 22 G3 X8 l' }8 A9 [5 t- F/ R. |' M
430 740 18.7- n: j% N& M# m
410 800 20.2 8 p! q4 w+ l7 O8 W0 J500 230 31 $ A+ a# T2 N) Z& k500 235 30 |# {5 Y$ h7 [( j$ v v w4 ]. h& T, c
500 240 32 6 ?9 p# O: ^$ {$ p450 600 26.62 W5 N* \9 w: J, P9 D
450 600 26.66 [, f; L* ]5 m* q3 ?9 Y7 c K
480 230 30* H/ v6 p# N9 {
475 1400 13.5; l& ^# E9 G2 F- l8 b- x$ J
485 615 26.8 . d. \/ e9 l" i" u2 _* r474 515 258 M! `; e6 E+ e* u3 o
485 700 20.4. l$ V, B) z1 w$ e7 W
600 750 15 1 ?, g- P u g# s6 @; ! D. S" V9 i4 H' `( e- Arun;, [0 n( N3 ^7 g: E6 A
proc nlin data=examples; 8 B. W# a4 U! E. K+ Mparameters alpha=35 beta=1.0; ) z6 }; u& `* l3 Smodel y=alpha*(1-exp(-beta*(wft/dft)));4 r& V6 j" f: V4 p8 y7 n
run;6 b& e) \4 b3 T2 h5 C' D
0 F! _' \8 N8 b5 ^8 `--------------------------------------------------- . W; @/ p4 @* g( F我写的一个SAS的非线性回归,但是总是提示错误,NOTE: DER.alpha not initialized or missing. It will be computed automatically. 9 a/ `1 {, F8 q, `' W- INOTE: DER.beta not initialized or missing. It will be computed automatically. 3 c1 w6 C0 y; x+ ^8 B7 _ERROR: dependent variable not on dataset. 2 p- u8 R# e ]/ f! d" F1 `4 R% L! k% a/ ]3 N
新手请大家帮助了~谢谢各位 y D0 t* G; \6 }: N4 `