[sage-support] Re: sage.numerical.optimize.minimize() returns without returning a value

2010-07-17 Thread JamesHDavenport
On Jul 16, 11:14 pm, Daniel Friedan dfrie...@gmail.com wrote: an update: minimize() is much improved using Harald Schilly's suggestion to provide an explicit gradient function defined with fast_float(). succeeded:       minimizing a quartic polynomial in 100 variables containing 1,100,411

[sage-support] Re: adding more points to an existing polyhedron

2010-07-17 Thread tvn
it's a research project I am working on --- On Jul 14, 1:48 am, Alec Battles alec.batt...@gmail.com wrote: Sounds like an interesting project. Is it for school or for fun? I'm using Sage to make art and sorta failing. If I knew more programming I'd give it a lot more time, but sadly my only

[sage-support] efficient way of finding convex hull ?

2010-07-17 Thread tvn
I use p = Polyhedron(vertices=set_of_vertices) to compute the convex hull of the given set_of_vertices. It works fine except way too slow when dealing with high dimension and large set of vertices. I am wondering if there's anyway to speed up the process. 1) Is using Polyhedron() the