

Hi all,
can any one of you see whats wrong in the code below?
>  model<-lm(Tcrash~X100MVMT+Alcohol+Alignment+PVMT, data=data)#works
> sar<-spautolm(Tcrash~X100MVMT+Alcohol+Alignment+PVMT,listw=WI_queenW, data=data)#works
> lag <- lagsarlm(Tcrash~X100MVMT+Alcohol+Alignment+PVMT, data=data, listw=listwW)#shows error
Error in solve.default(inf, tol = tol.solve) : 
  system is computationally singular: reciprocal condition number = 2.44638e-12
> lag <- lagsarlm(Tcrash~X100MVMT+Alcohol+Alignment+PVMT, data=data, listw=WI_queenW)
Error in solve.default(inf, tol = tol.solve) : 
  system is computationally singular: reciprocal condition number = 1.51647e-13
> WI_queenW
Characteristics of weights list object:
Neighbour list object:
Number of regions: 71 
Number of nonzero links: 364 
Percentage nonzero weights: 7.22079 
Average number of links: 5.126761 

Weights style: B 
Weights constants summary:
   n   nn  S0  S1   S2
B 71 5041 364 728 8160
.............................
 Milan
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