On Thu, 6 Apr 2006, Duncan Murdoch wrote: > On 4/6/2006 1:34 PM, Philipp H. Mohr wrote: > > Hello, > > > > I have two densities which I plot with: > > > > sm.density(gps) > > sm.density(gps2) > > > > Both data sets are 2D and have the same scale. > > > > Is there a way of plotting the difference between the two density plots ? > > ?sm.density describes the value returned by those function calls, which > includes "the values of the density estimate at the evaluation points". > The evaluation points may be different between the two datasets, but > you could use approxfun to generate functions doing linear interpolation > for each of them, and then evaluate the density difference whereever you > like.
The eval.points can be set using sm.options(), fixing them to be the same. > > Duncan Murdoch > > ______________________________________________ > [email protected] mailing list > https://stat.ethz.ch/mailman/listinfo/r-help > PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html > -- Roger Bivand Economic Geography Section, Department of Economics, Norwegian School of Economics and Business Administration, Helleveien 30, N-5045 Bergen, Norway. voice: +47 55 95 93 55; fax +47 55 95 95 43 e-mail: [EMAIL PROTECTED] ______________________________________________ [email protected] mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html
