Re: Error: Initial Values for ATOL / LSODI1 CODE 205 ? - Yaho !

From: "Kyun-Seop Bae" Subject:Re: [NMusers] Error: Initial Values for ATOL / LSODI1 CODE 205 ? - Yaho ! Date:Tue, February 12, 2002 1:39 am RE: [NMusers] Error: Initial Values for ATOL / LSODI1 CODE 205 ?Dear All, and especially Vladimir, I found the clue from Vladimir's suggestion. In $AES block, E(5) can have too solutions, that is to say quadratic function with regard to A(5). One is that A(5) > 0 , and the other is A(5) < 0. So, if I replace the quadratic equation with the following always positive root, then the error has gone. ================= $AES B = KA * A(1) + A(3) - A(4); C = -1 * KA * A(1) * ( A(2) + A(4) ); D = B ** 2 - 4 * C; E(5) = A(5) - 0.5 * ( -1 * B + D ** 0.5 ); ================= Thank all who considered my problem, and especially Vladimir. And dear Dr. Kang, I'll be at Atlanta this march for ASCPT 2002. Sincerely Kyun-Seop Bae MD Clinical Trial Center Seoul National University Hospital 28 Yongon-dong Chongno-gu Seoul, 110-744, Korea Tel: +82-2-760-1666 Email: ksbae@snu.ac.kr