I haven't used "lm.LMtest", but I can make a guess: Have you tried the following:

        mdl <- lm(y~a+b, data=...)
       lm.LMtests(mdl, ...)

hope this helps. spencer graves

Jill Caviglia-Harris wrote:

Can someone tell me what an object of class lm returned by lm means? I
assumed it mean the regression model - but I'm not sure how to enter
this in. I have tried


y~a+b

but this is not working. I have also tried saving the regression
results and entering these, but again this is incorrect.


This language is from the following:

lm.LMtests(model, listw, zero.policy=FALSE, test="LMerr", spChk=NULL)

Arguments
model - an object of class lm returned by lm
listw - a listw object created for example by nb2listw, expected to be
row-standardised (W-style)



Any help is welcomed. Thanks.


-Jill

***************************************************
Jill L. Caviglia-Harris, Ph.D.
Assistant Professor
Economics and Finance Department
Salisbury University
Salisbury, MD 21801-6860
  phone: (410) 548-5591
  fax: (410) 546-6208

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