I have a question regarding the package LOCFIT of C Loader. After fitting a smooth surface (y modeled by two regressors), I can't seem to find a nice way of making a perspective (or other 3d plot). The contours don't look quite so good. It is meant to be used as illustration of smoothing to my students in regression analysis. Could anybody perhaps assist me in producing a "good" graph in 3d? It probably works in S-Plus, but I am using R. (I have tried plot (locfit object, type="persp") on the ethanol dataset - but this gives a poor result, with a few warnings.) THANK YOU!. Jacob Jacob L van Wyk Department of Statistics University of Johannesburg APK P O Box 524 Auckland Park 2006 South Africa Tel: +27-11-489-3080 Fax: +27-11-489-2832
From: Jacob van Wyk> > I have a question regarding the package LOCFIT of C Loader. > > After fitting a smooth surface (y modeled by two regressors), > I can't seem to find a nice way of making a perspective (or > other 3d plot). The contours don't look quite so good. > > It is meant to be used as illustration of smoothing to my > students in regression analysis. > > Could anybody perhaps assist me in producing a "good" graph > in 3d? It probably works in S-Plus, but I am using R. > > (I have tried plot (locfit object, type="persp") on the > ethanol dataset > - but this gives a poor result, with a few warnings.)Could you elaborate on what `poor result' means? It doesn't look half bad to me (except perhaps it needs to be rotated a bit)... Andy> THANK YOU!. > Jacob > > > Jacob L van Wyk > Department of Statistics > University of Johannesburg APK > P O Box 524 > Auckland Park 2006 > South Africa > Tel: +27-11-489-3080 > Fax: +27-11-489-2832 > > ______________________________________________ > R-help at stat.math.ethz.ch mailing list > https://stat.ethz.ch/mailman/listinfo/r-help > PLEASE do read the posting guide! > http://www.R-project.org/posting-guide.html > >