Re: [R-sig-Geo] ordinary kriging and elevation with GSTAT

2010-01-17 Thread Paul Hiemstra
Tobin Cara wrote: Hello, If I generate a variogram with an outside program on the x-y plane, would this variogram be valid for ordinary kriging in gstat? I am giving gstat the x,y,z coordinates and I am trying to predict at the elevations of a digital elevation model. Thank you in advance

Re: [R-sig-Geo] Status of gpclib license

2010-01-17 Thread Edzer Pebesma
Nicholas, this is unlikely; if true, the author would have done well to update his software page http://www.cs.manchester.ac.uk/~toby/alan/software/ and the corresponding wikipedia entry, http://en.wikipedia.org/wiki/GPC_General_Polygon_Clipper_Library Even (some) universities can these

Re: [R-sig-Geo] Status of gpclib license

2010-01-17 Thread Nicholas Lewin-Koh
Hi, Thanks, I must be remembering something else then. I hope I am not APOE4 +/+. Nicholas On Sun, 17 Jan 2010 17:44 +0100, Edzer Pebesma edzer.pebe...@uni-muenster.de wrote: Nicholas, this is unlikely; if true, the author would have done well to update his software page

Re: [R-sig-Geo] Status of gpclib license

2010-01-17 Thread Roger Bivand
On Sun, 17 Jan 2010, Nicholas Lewin-Koh wrote: Hi, Thanks, I must be remembering something else then. I hope I am not APOE4 +/+. Hi Nicholas, I wouldn't worry more than we all have to! About 5 years ago an attempt was made to find out what the license of the underlying C code was, but did

Re: [R-sig-Geo] Status of gpclib license

2010-01-17 Thread Roger Bivand
On Sun, 17 Jan 2010, Roger Bivand wrote: On Sun, 17 Jan 2010, Nicholas Lewin-Koh wrote: Hi, Thanks, I must be remembering something else then. I hope I am not APOE4 +/+. Hi Nicholas, ... When CRAN had few packages, and packages had few dependencies, users could control the licenses of

[R-sig-Geo] Thematic Map

2010-01-17 Thread Andrew Hunter
Hi I am using Waller Gotways Leukaemia data and am trying to create a plot of county population using RColorBrewer using the following: plotvar - NY8$POP8 plotvar - rank(plotvar) nclr - 8 plotclr - brewer.pal(nclr,PuOr) colornum - cut(plotvar, nclr, labels=FALSE) colorcode - plotclr[colornum]

Re: [R-sig-Geo] Thematic Map

2010-01-17 Thread Barry Rowlingson
On Sun, Jan 17, 2010 at 10:39 PM, Andrew Hunter ahun...@ucalgary.ca wrote: Hi I am using Waller Gotways Leukaemia data and am trying to create a plot of county population using RColorBrewer using the following: plotvar - NY8$POP8 plotvar - rank(plotvar) nclr - 8 plotclr -

Re: [R-sig-Geo] Plotting shapefiles on top of Google map tiles

2010-01-17 Thread Robert J. Hijmans
Patrick, I have had some success with plotting sp objects on top of G maps with this function gmap - function(xy, maptype='terrain', ...) { require(RgoogleMaps) fun = points if (inherits(xy, 'Spatial')) { b = bbox(xy) if (inherits(xy,