Re: [R-sig-eco] solving differential equations for ecological models

2013-12-25 Thread Baldwin, Jim -FS
USDA Forest Service -Original Message- From: r-sig-ecology-boun...@r-project.org [mailto:r-sig-ecology-boun...@r-project.org] On Behalf Of peterhouk1 . Sent: Wednesday, December 25, 2013 8:57 PM To: r-sig-ecology@r-project.org Subject: [R-sig-eco] solving differential equations for ecolo

[R-sig-eco] solving differential equations for ecological models

2013-12-25 Thread peterhouk1 .
Greetings - I'm having trouble figuring out an efficient means towards solving for the equilbria in a four-equation model with two herbivores (H1 and H2), and two predators (P and S). Below, I have set the rate of change for these populations to 0 (i.e., equilibrium), then solved. The resultant