Dear all, I'm using censReg 0.5-16 to run a random effects model in a panel data, but R is having an error. I have already transformed my data using 'plm'. Can someone help me understanding why?
This is the model and the error: R> tob1 <- censReg(transfers.cap ~ ifdm + gdp.cap + coa.power + margin + lula.perc.vot2 + reelec + voters + gov.fac + year.fac, left=0, right=Inf, data=dNI.p, method=BHHH) Error in solve.default(crossprod(X.m)) : system is computationally singular: reciprocal condition number = 2.84374e-18 Thanks *Felipe Nunes* CAPES/Fulbright Fellow PhD Candidate - UCLA felipenunes.bol.ucla.edu On Fri, Apr 13, 2012 at 11:22 PM, Arne Henningsen < arne.henning...@googlemail.com> wrote: > Hi Felipe > > On 22 March 2012 10:13, Felipe Nunes <felipnu...@gmail.com> wrote: > > I'm using censReg() to run a random effects model, but R is having an > error. > > Can you help me understanding why? > > > > When I run this model, everything works fine: > > > > tob1 <- censReg(transfers.cap ~ factor(year) + district2 + gdp.cap - 1, > > left=0, right=Inf, method="BFGS", nGHQ=15, iterlim=10000, data = d3) > > > > But this one, does not: > > > > tob2 <- censReg(transfers.cap ~ factor(year) + I(constituency.coa.v/100) > + > > district2 - 1, left=0, right=Inf, method="BFGS", nGHQ=15, iterlim=10000, > > data = d3) > > > > The error is: > > > > Error in solve.default(OM) : > > system is computationally singular: reciprocal condition number = > > 4.41531e-17 > > Did you solve this problem in the mean time? > > If not: I could take a look at it if you send me a reproducible example. > > Best wishes, > Arne > > -- > Arne Henningsen > http://www.arne-henningsen.name > [[alternative HTML version deleted]] ______________________________________________ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.
