Message-ID: <996C788E-4632-4BB5-A9F4-83AB02C0CE3D@soc.soton.ac.uk>
Date: 2006-07-25T09:08:32Z
From: robin hankin
Subject: pari/gp interface
Hi
I'm developing an R package that
needs to execute some code written in pari/gp.
I've used this before from an R package (elliptic) but the interface
is very
basic: the R function creates a string such as the following:
string <- echo ' ellwp ([ 2+0*I , 0+2*I ], 1+0*I )' | gp -q
And then
system(string)
returns the output from gp which then needs to be text processed
(translating "I"
to "i", etc).
I don't think this approach would work under Windows.
Does anyone have any experience of calling pari/gp from R?
Or any ideas for a more portable method than the one above?
[
PARI/GP is a widely used computer algebra system designed for fast
computations
in number theory. It is freely available at
http://pari.math.u-bordeaux.fr/
]
--
Robin Hankin
Uncertainty Analyst
National Oceanography Centre, Southampton
European Way, Southampton SO14 3ZH, UK
tel 023-8059-7743