Hello, I have a problem with Hausman test. I am performing my analysis with these commands:> library(plm) > data<-read.csv2("paolo.csv",header=TRUE) > data<pdata.frame(data,index=c("FIRM","YEAR"),drop.index=TRUE,row.names=TRUE)>RECEIV~LSIZE+LAGE+LAGE2+CFLOW+STLEV+FCOST+PGROWTH+NGROWTH+TURN+GPROF+GPROF2>grun.fe<-plm(RECEIV~LSIZE+LAGE+LAGE2+CFLOW+STLEV+FCOST+PGROWTH+NGROWTH+TURN+GPROF+GPROF2,data=data,model="within")> grun.re<-plm(RECEIV~LSIZE+LAGE+LAGE2+CFLOW+STLEV+FCOST+PGROWTH+NGROWTH+TURN+GPROF+GPROF2,data=data,model="random")>gw<-plm(RECEIV~LSIZE+LAGE+LAGE2+CFLOW+STLEV+FCOST+PGROWTH+NGROWTH+TURN+GPROF+GPROF2,data=data,model="within")>gr<-plm(RECEIV~LSIZE+LAGE+LAGE2+CFLOW+STLEV+FCOST+PGROWTH+NGROWTH+TURN+GPROF+GPROF2,data=data,model="random")> phtest(gw,gr)I got this answer: Error in solve.default(dvcov) : how can I solve this problem? Thank you [[alternative HTML version deleted]]
Note the typo in your 3rd line: data < Don't know if this means anything... Bert On Feb 11, 2018 7:33 AM, "PAOLO PILI" <paolo.pili at student.unife.it> wrote:> Hello, > > I have a problem with Hausman test. I am performing my analysis with these > commands: > > > library(plm) > > data<-read.csv2("paolo.csv",header=TRUE) > > data< > pdata.frame(data,index=c("FIRM","YEAR"),drop.index=TRUE,row.names=TRUE) > > > RECEIV~LSIZE+LAGE+LAGE2+CFLOW+STLEV+FCOST+PGROWTH+NGROWTH+ > TURN+GPROF+GPROF2 > > > grun.fe<-plm(RECEIV~LSIZE+LAGE+LAGE2+CFLOW+STLEV+FCOST+ > PGROWTH+NGROWTH+TURN+GPROF+GPROF2,data=data,model="within") > > grun.re > <-plm(RECEIV~LSIZE+LAGE+LAGE2+CFLOW+STLEV+FCOST+PGROWTH+ > NGROWTH+TURN+GPROF+GPROF2,data=data,model="random") > > > gw<-plm(RECEIV~LSIZE+LAGE+LAGE2+CFLOW+STLEV+FCOST+ > PGROWTH+NGROWTH+TURN+GPROF+GPROF2,data=data,model="within") > > > gr<-plm(RECEIV~LSIZE+LAGE+LAGE2+CFLOW+STLEV+FCOST+ > PGROWTH+NGROWTH+TURN+GPROF+GPROF2,data=data,model="random") > > phtest(gw,gr) > > I got this answer: > > Error in solve.default(dvcov) : > > how can I solve this problem? > > Thank you > > [[alternative HTML version deleted]] > > ______________________________________________ > R-help at r-project.org mailing list -- To UNSUBSCRIBE and more, see > 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. >[[alternative HTML version deleted]]
you are right about the 3rd line but it doesn't help me for my problem. I remove the 3rd line but there is still the same problem: Error in solve.default (dvcov): the system is numerically unique: reciprocity condition value 1.63418e-19 Paolo 2018-02-11 16:54 GMT+01:00 Bert Gunter <bgunter.4567 at gmail.com>:> Note the typo in your 3rd line: data < > > Don't know if this means anything... > > Bert > > > > On Feb 11, 2018 7:33 AM, "PAOLO PILI" <paolo.pili at student.unife.it> wrote: > >> Hello, >> >> I have a problem with Hausman test. I am performing my analysis with these >> commands: >> >> > library(plm) >> > data<-read.csv2("paolo.csv",header=TRUE) >> > data< >> pdata.frame(data,index=c("FIRM","YEAR"),drop.index=TRUE,row.names=TRUE) >> > >> RECEIV~LSIZE+LAGE+LAGE2+CFLOW+STLEV+FCOST+PGROWTH+NGROWTH+TU >> RN+GPROF+GPROF2 >> > >> grun.fe<-plm(RECEIV~LSIZE+LAGE+LAGE2+CFLOW+STLEV+FCOST+PGROW >> TH+NGROWTH+TURN+GPROF+GPROF2,data=data,model="within") >> > grun.re >> <-plm(RECEIV~LSIZE+LAGE+LAGE2+CFLOW+STLEV+FCOST+PGROWTH+NGRO >> WTH+TURN+GPROF+GPROF2,data=data,model="random") >> > >> gw<-plm(RECEIV~LSIZE+LAGE+LAGE2+CFLOW+STLEV+FCOST+PGROWTH+ >> NGROWTH+TURN+GPROF+GPROF2,data=data,model="within") >> > >> gr<-plm(RECEIV~LSIZE+LAGE+LAGE2+CFLOW+STLEV+FCOST+PGROWTH+ >> NGROWTH+TURN+GPROF+GPROF2,data=data,model="random") >> > phtest(gw,gr) >> >> I got this answer: >> >> Error in solve.default(dvcov) : >> >> how can I solve this problem? >> >> Thank you >> >> [[alternative HTML version deleted]] >> >> ______________________________________________ >> R-help at r-project.org mailing list -- To UNSUBSCRIBE and more, see >> https://stat.ethz.ch/mailman/listinfo/r-help >> PLEASE do read the posting guide http://www.R-project.org/posti >> ng-guide.html >> and provide commented, minimal, self-contained, reproducible code. >> >[[alternative HTML version deleted]]