Making doc is very hard, and usually not a task that can be accomplished by the developer alone, as he/she holds many connexions in his mind that are not there for the rest of people. Considering this, the current doc is a very good start point. I'm starting sort of "operational guide", based on how to do some common (from my point of view) tasks. Although I confess that this is an egoistic effort (I normally use sp very intensively during few weeks for a given phase of the projects, then get busy with other tasks for months and thus forget many things for the next time), I'll be happy sharing this doc. My 5 cents!
Agus Roger Bivand escribió: > On Mon, 29 Oct 2007, Agustin Lobo wrote: > >> I have just incidentally learned in the sp doc that >> getSpPPolygonsLabptSlots() actually retrieves the coordinates >> of the centroids. The index page of the sp doc just states: >> getSpPPolygonsLabptSlots Class "SpatialPolygonsDataFrame" >> >> adding a mention to the fact that getSpPPolygonsLabptSlots retrieves the >> coordinates of the centroids would be very helpful. Previously, I >> thought I had to convert to a PBSmapping object and use calcCentroid(). > > And coordinates(x) returns the same points for x a > SpatialPolygonsDataFrame (strictly the centroids of the largest > component polygon by area, with no guarantee that it does not fall in a > hole in that polygon. The very long names are just wrappers for losts of > nested slot() and sapply() calls. > > The documentation weaknesses are obvious, but are hard to address, > because the sp package itself has little example data - there is more in > maptools - and because new style classes and methods for them are harder > to document than old style classes and methods. I'll try to make the > documentation simpler and easier to search. > > Roger > >> >> Agus >> >> > -- Dr. Agustin Lobo Institut de Ciencies de la Terra "Jaume Almera" (CSIC) LLuis Sole Sabaris s/n 08028 Barcelona Spain Tel. 34 934095410 Fax. 34 934110012 email: [EMAIL PROTECTED] http://www.ija.csic.es/gt/obster _______________________________________________ R-sig-Geo mailing list R-sig-Geo@stat.math.ethz.ch https://stat.ethz.ch/mailman/listinfo/r-sig-geo