Re: [R] integration over a simplex

2007-07-10 Thread Duncan Murdoch
On 7/10/2007 6:57 AM, Robin Hankin wrote: > Hello > > The excellent adapt package integrates over multi-dimensional > hypercubes. > > I want to integrate over a multidimensional simplex. Has anyone > implemented such a thing in R? > > I can transform an n-simplex to a hyperrectangle > but the J

Re: [R] integration over a simplex

2007-07-10 Thread RAVI VARADHAN
is problem. Best, Ravi. - Original Message - From: Robin Hankin <[EMAIL PROTECTED]> Date: Tuesday, July 10, 2007 6:58 am Subject: [R] integration over a simplex To: RHelp help > Hello > > The excellent adapt package integrates over multi-dimensional > hy

[R] integration over a simplex

2007-07-10 Thread Robin Hankin
Hello The excellent adapt package integrates over multi-dimensional hypercubes. I want to integrate over a multidimensional simplex. Has anyone implemented such a thing in R? I can transform an n-simplex to a hyperrectangle but the Jacobian is a rapidly-varying (and very lopsided) function and