Displaying 1 result from an estimated 1 matches for "finalglm1".
2008 Oct 08
1
Error in spdep: system is computationally singular
...ot;=~1+pdq+poly(pdq,2)+poly(pdq,3),"var7"=~1+trng+poly(trng,2)+poly(trng,3),"var8"=~1+mdr+poly(mdr,2)+poly(mdr,3))
final.glm1<-step.gam(glm1,glm.scope,direction="back")
**I want to estimate the spatial simultaneous autoregressive error model**
res20<-errorsarlm(finalglm1, listw=nb20.w, zero.policy=TRUE)
But here I receive the following error message:
Error in solve.default(asyvar, tol = tol.solve) :
system is computationally singular: reciprocal condition number = 2.8713e-12
What is happening? What does this message mean?
Thanks a lot,
Alberto
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