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
On Sat, 15 Nov 2003 19:41:29 -0500, you 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.Most functions in R return objects. The description of "model" is referring to the object returned by the lm() function. For example, fit <- lm(y~a+b) Then "fit" would be a suitable value to pass as the model. Duncan Murdoch
Duncan: Thanks for your response. I actually tried this as well. The error message I get is "objects of different length" I thought I was chosign the model incorrectly, perhaps this is something else? -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 *********************************************************>>> Duncan Murdoch <dmurdoch at pair.com> 11/15/03 08:00PM >>>On Sat, 15 Nov 2003 19:41:29 -0500, you 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 tobe>row-standardised (W-style) > > >Any help is welcomed. Thanks.Most functions in R return objects. The description of "model" is referring to the object returned by the lm() function. For example, fit <- lm(y~a+b) Then "fit" would be a suitable value to pass as the model. Duncan Murdoch
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
>
>______________________________________________
>R-help at stat.math.ethz.ch mailing list
>https://www.stat.math.ethz.ch/mailman/listinfo/r-help
>
>