Thank you, Roger! I will look into this .
best wishes, Rafael H M Pereira On Wed, Jan 3, 2018 at 10:32 AM, Roger Bivand <roger.biv...@nhh.no> wrote: > On Wed, 3 Jan 2018, Rafael Pereira wrote: > > Dear all, >> >> I am using a spatial lag regression model in a paper. I know already how >> to >> get the total impacts of the model, but I don't know how to generate the >> standard errors of the total impacts. >> >> In this paper by Roger Bivand here*, these SE were "calculated using the >> 'estimable' function in the R gmodels package." I've checked the function >> documentation but I couldn't really get my head around how to use it on >> a lagsarlm lag model. >> > > Wrong reference - those are for SLX and SDEM models, but use the > appropriate impacts() methods. See ?impacts. Remember to create a vector of > traces, and help your head by (re)-reading LeSage & Pace 2009, and > https://www.jstatsoft.org/index.php/jss/article/view/v063i18, p. 8 and > section 5. > > Hope this helps, > > Roger > > >> Can someone give me hand? There is a reproducible example below, but if >> any >> of you could share a snippet of code you have already used this would be >> very helpful already. >> >> # reproducible example >> data(oldcol) >> COL.lag.eig <- lagsarlm(CRIME ~ INC + HOVAL, data=COL.OLD, type="lag", >> nb2listw(COL.nb, style="W"), method="eigen", >> quiet=FALSE) >> summary(COL.lag.eig, correlation=TRUE) >> >> >> >> * http://openjournals.wu.ac.at/region/paper_107/107.html >> >> best wishes, >> >> Rafael H M Pereira >> >> [[alternative HTML version deleted]] >> >> _______________________________________________ >> R-sig-Geo mailing list >> R-sig-Geo@r-project.org >> https://stat.ethz.ch/mailman/listinfo/r-sig-geo >> >> > -- > Roger Bivand > Department of Economics, Norwegian School of Economics, > Helleveien 30, N-5045 Bergen, Norway. > voice: +47 55 95 93 55; e-mail: roger.biv...@nhh.no > Editor-in-Chief of The R Journal, https://journal.r-project.org/index.html > http://orcid.org/0000-0003-2392-6140 > https://scholar.google.no/citations?user=AWeghB0AAAAJ&hl=en > [[alternative HTML version deleted]] _______________________________________________ R-sig-Geo mailing list R-sig-Geo@r-project.org https://stat.ethz.ch/mailman/listinfo/r-sig-geo
