Page 1 of 1

non-negative variables

PostPosted: Mon Jun 08, 2009 4:16 pm
by wolfischlumpf
Hi!
Is it possible to impose the restriction that a certain variable cannot take on negative values?
Thanks,

Re: non-negative variables

PostPosted: Tue Jun 09, 2009 9:20 am
by StephaneAdjemian
Hi, This is not possible with a local approximation (first or second order). Best, Stéphane.