On Sat, 15 Nov 2003, Jill Caviglia-Harris wrote: > 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? >
The error message is caused by a difference in the length of the residual vector - see > length(rediduals(model)) and the number of spatial units in your spatial weights list object, see > length(listw$neighbours) or > print(listw) Please contact me off-list if you need more explanation, for example giving the output of these lengths. Roger > -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 <[EMAIL PROTECTED]> 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 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 > > ______________________________________________ > [EMAIL PROTECTED] mailing list > https://www.stat.math.ethz.ch/mailman/listinfo/r-help > -- Roger Bivand Economic Geography Section, Department of Economics, Norwegian School of Economics and Business Administration, Breiviksveien 40, N-5045 Bergen, Norway. voice: +47 55 95 93 55; fax +47 55 95 93 93 e-mail: [EMAIL PROTECTED] ______________________________________________ [EMAIL PROTECTED] mailing list https://www.stat.math.ethz.ch/mailman/listinfo/r-help
