lag.listw function in spdep package

From: "Roger Bivand" <Roger.Bivand at nhh.no>
To: Al? Santacruz <amsantac at hotmail.com>,<r-sig-geo at stat.math.ethz.ch>
Subject: RE: [R-sig-Geo] lag.listw function in spdep package
Date: Sun, 19 Nov 2006 22:44:59 +0100

This is C code, not(yet) on a public CVS server. The only way to examine 
the source is to download the source package from CRAN, unpack it, and look 
in src/lagw.c

If the macros are not clear enough, you can browse the R source code 
including the headers at https://svn.r-project.org/R/, and please refer to 
the relevant sections of the "writing R extensions" manual.

If you have further questions (and suggestions), please write!

(I am starting to re-implement at least listw objects as S4 (new-style) 
classes based on sparse matrices - if anyone on the list is interested in 
this, please let me know)

Best wishes

Roger

---
Roger Bivand, NHH, Helleveien 30, N-5045 Bergen,
Roger.Bivand at nhh.no



-----Original Message-----
From: r-sig-geo-bounces at stat.math.ethz.ch on behalf of Al? Santacruz
Sent: Sun 19.11.2006 22:34
To: r-sig-geo at stat.math.ethz.ch
Subject: [R-sig-Geo] lag.listw function in spdep package

Dear list members,

I am studying the SAR models and its implementation in R, step by step. For
the creation of the spatial lags, I found that function lag.listw calls an
internal function "lagw".

I would like to know if it is possible to see the code of "lagw" function 
in
R, is there any command to do this?

I really appreciate your help,

Sincerely,

Al? M. Santacruz
M.Sc. Geomatics, Student
National University of Colombia
E-mail: amsantac at unal.edu.co
Bogot? D.C.