Sorry for my previous HTML-formatted message, here it is again: Another package I find useful for shaded views of spatial data is the rgl package.
It is most useful because of its ability to zoom and turn the map interactively. >From surface3d() help page : data(volcano) z <- 2 * volcano x <- 10 * (1:nrow(z)) y <- 10 * (1:ncol(z)) zlim <- range(y) zlen <- zlim[2] - zlim[1] + 1 colorlut <- terrain.colors(zlen) col <- colorlut[ z-zlim[1]+1 ] library(rgl) open3d() surface3d(x, y, z, color=col, back="lines") Pierre 2009/11/24 Pierre Roudier <[email protected]>: > Another package I find useful for shaded views of spatial data is the rgl > package. > > It is most useful because of its ability to zoom and turn the map > interactively. > > From surface3d() help page : > > data(volcano) > z <- 2 * volcano > x <- 10 * (1:nrow(z)) > y <- 10 * (1:ncol(z)) > zlim <- range(y) > zlen <- zlim[2] - zlim[1] + 1 > colorlut <- terrain.colors(zlen) > col <- colorlut[ z-zlim[1]+1 ] > library(rgl) > open3d() > surface3d(x, y, z, color=col, back="lines") > > Pierre > > 2009/11/24 Karl Ove Hufthammer <[email protected]> >> >> On Mon, 23 Nov 2009 14:16:35 +0100 Paul Hiemstra <[email protected]> >> wrote: >> > > The maps with shading look quite nice. Is there an R package/function >> > > which can create similar images? >> > > >> > A good place to look for these kinds of graphs and how to make them is >> > the R graph gallery [1]. Check out this one for example [2]. >> >> Excellent idea. I have of course used 'persp' many times, but had >> forgotten about its 'shade' option. With it, I can create very good- >> looking (and useful!) 3D maps. I use it on a bathymetry (ocean depths) >> dataset, and using this shading and 3D visualisation gives a whole new >> perspective (sorry). >> >> One alternative that I discovered is the hillshading feature of the free >> GIS software SAGA. It's even available in R using the 'RSAGA' package. >> See "http://sourceforge.net/apps/trac/saga-gis/wiki/Climbing%20Mount% >> 20St.%20Helens" for a nice example of its output. (I didn't manage to >> get it to automatically use 'natural' colours for ocean and >> land/terrain, though.) >> >> -- >> Karl Ove Hufthammer >> >> _______________________________________________ >> R-sig-Geo mailing list >> [email protected] >> https://stat.ethz.ch/mailman/listinfo/r-sig-geo > > _______________________________________________ R-sig-Geo mailing list [email protected] https://stat.ethz.ch/mailman/listinfo/r-sig-geo
