Hi Charles, You don't need "as.layer".
levelplot(z ~ x*y,grid2) + contourplot(z ~ x*y,grid1) is enough. Regards, Pascal On Sun, Aug 3, 2014 at 5:59 PM, Charles Novaes de Santana <charles.sant...@gmail.com> wrote: > Dear all, > > Just to inform that I have solved my problem in a very elegant way, thanks > to the layer approach given by package latticeExtra. > > After loading my grids like before: > > x<-1:10 > y<-1:10 > grid1<-expand.grid(x=x,y=y) > grid2<-expand.grid(x=x,y=y) > z1<-grid1$x^2 + grid1$y^2 > z2<-2*grid2$x^2 - grid2$y^2 > grid1$z<-z1 > grid2$z<-z2 > > I just need to do: > > levelplot(z ~ x*y,grid2) + as.layer(contourplot(z ~ x*y,grid1)); > > The result is a beautiful plot with a contourplot over a levelplot. There > are some examples of overlay of trellis plots in the manual of > latticeExtra: http://latticeextra.r-forge.r-project.org/ > > Thank you for your attention, > > Best, > > Charles > > > On Sat, Aug 2, 2014 at 4:01 PM, Charles Novaes de Santana < > charles.sant...@gmail.com> wrote: > >> Dear all, >> >> Does anyone know a way to overlay a contourplot and a levelplot of >> different datasets, both datasets with the same dimension? >> >> Let's say I have 2 10x10 grids, like those below: >> >> library(lattice) >> >> x<-1:10 >> y<-1:10 >> grid1<-expand.grid(x=x,y=y) >> grid2<-expand.grid(x=x,y=y) >> z1<-grid1$x^2 + grid1$y^2 >> z2<-2*grid2$x^2 - grid2$y^2 >> grid1$z<-z1 >> grid2$z<-z2 >> >> I would like to plot z1 and z2 in the same plot: z1 as a contourline and >> z2 as a levelplot. I tried to do this in two ways, without success: >> >> plot.new(); >> contourplot(z ~ x*y,grid1) >> par(new=T) >> levelplot(z ~ x*y,grid2) >> >> and >> >> levelplot(z ~ x*y,grid1,region=FALSE,contour=TRUE) >> par(new=T) >> levelplot(z ~ x*y,grid2,region=TRUE,contour=FALSE) >> >> Any clue? >> >> Thank you very much for your time and any help! >> >> Charles >> >> -- >> Um axé! :) >> >> -- >> Charles Novaes de Santana, PhD >> http://www.imedea.uib-csic.es/~charles >> > > > > -- > Um axé! :) > > -- > Charles Novaes de Santana, PhD > http://www.imedea.uib-csic.es/~charles > > [[alternative HTML version deleted]] > > > ______________________________________________ > R-help@r-project.org mailing list > https://stat.ethz.ch/mailman/listinfo/r-help > PLEASE do read the posting guide http://www.R-project.org/posting-guide.html > and provide commented, minimal, self-contained, reproducible code. > -- Pascal Oettli Project Scientist JAMSTEC Yokohama, Japan ______________________________________________ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.