Using the Z value for 3-D polygons?
Jim, I'm sorry that this not answer your question; refering to this graphic gallery, I discovered that fig21 is no longer matches current states in sp, so I updated the complete set on sourceforge (and the sources in cvs, target spweb). For fig21, I also had to update the generating code, as panels now need to have matching factor levels (to have a common scale). Figures now look a little different here and there, as I changed from using driver GDD to png, which, when using cairo, now also provides anti-aliasing. -- Edzer
Jim Burke wrote:
Hi Everyone, QUESTION: How can I plot a spatial polygon (SpatialPolygonsDataFrame) as 3-d? Perhaps using "spplot.polygons" with its z value? GOAL: To have a series of polygons look like approximately like the last example in the PDF below. http://ocw.mit.edu/NR/rdonlyres/Urban-Studies-and-Planning/11-521Spatial-Database-Management-and-Advanced-Geographic-Information-SystemsSpring2003/ACA80C9F-4089-403E-9669-50763381D08A/0/lect13c.pdf EXAMPLE SUGGESTION: Use "spplot.pologons" with the venerable SourceForge NC fig21.R example and using its color coding values as the polygon $z value? Assuming lat and long are in the sp. http://r-spatial.sourceforge.net/gallery/#fig21.R Then if its not as straightforward as above, what would be the steps to convert a spatial polygon to points or something to graph that way? Thanks, Jim Burke
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Edzer Pebesma Institute for Geoinformatics (ifgi), University of M?nster Weseler Stra?e 253, 48151 M?nster, Germany. Phone: +49 251 8333081, Fax: +49 251 8339763 http://ifgi.uni-muenster.de/ http://www.springer.com/978-0-387-78170-9 e.pebesma at wwu.de