Re: [R] Non-linearly constrained optimisation

2008-07-19 Thread Stuart Nettleton
Tolga, Your issue seems to be a common one at present. While I am relatively new to R (and would welcome being corrected), I haven't been able to find an existing module to parse algebraic equations and build acyclic networks (for the objective function and each constraint) to submit to

[R] Equation sequencing

2008-07-18 Thread Stuart Nettleton
Hello, Would anyone be able to help me find an algebraic equation sequencer (like Knuth's topological processor) that will order a system of equations for nonlinear optimization similar to GAMS/AMPL? eg A[t]=A[t-1]+B[t] with perhaps sum(A) to be optimised by changing B[t] and other

Re: [R] How to solve systems of nonlinear equations in R?

2008-07-18 Thread Stuart Nettleton
Francois You might try the BB package, which has quite a nice example. Stuart On Sat, 19 Jul 2008 10:20:34 +1000, François Aucoin [EMAIL PROTECTED] wrote: Hey, I was wondering if there existed a R function similar to 'fsolve' or 'fzero' Matlab functions? Thanks! Francois Aucoin