LR.sarlm {spdep} | R Documentation |
The LR.sarlm()
function provides a likelihood ratio test for objects for which a logLik()
function exists for their class, or for objects of class logLik
. LR1.sarlm()
and Wald1.sarlm()
are used internally in summary.sarlm()
, but may be accessed directly; they report the values respectively of LR and Wald tests for the absence of spatial dependence in spatial lag or error models.
LR.sarlm(x, y) logLik.sarlm(object, ...) LR1.sarlm(object) Wald1.sarlm(object)
x |
a logLik object or an object for which a logLik() function exists |
y |
a logLik object or an object for which a logLik() function exists |
object |
a sarlm object from lagsarlm() or errorsarlm() |
... |
other arguments to logLik() |
LR.sarlm()
returns an object of class htest
with:
statistic |
value of statistic |
parameter |
degrees of freedom |
p.value |
Probability value |
estimate |
Log likelihood values of compared models |
method |
"Likelihood ratio for spatial linear models" |
logLik.sarlm()
returns an object of class logLik
LR1.sarlm
and Wald1.sarlm
returm objects of class htest
The numbers of degrees of freedom returned by logLik.sarlm()
Roger Bivand Roger.Bivand@nhh.no
data(columbus) mixed <- lagsarlm(CRIME ~ HOVAL + INC, data=columbus, nb2listw(col.gal.nb), type="mixed") error <- errorsarlm(CRIME ~ HOVAL + INC, data=columbus, nb2listw(col.gal.nb)) LR.sarlm(mixed, error)