Re: [R-sig-Geo] Overlay bubble chart on map

2009-08-17 Thread Roger Bivand
On Sun, 16 Aug 2009, Rebecca Ross wrote: Dear All, I am new to this list, so apologies if this question has been asked and answered many times before! I would like to overlay a bubble chart onto a map so that the bubbles correspond to particular points on the map. I have the shape file for

[R-sig-Geo] Overlay bubble chart on map

2009-08-16 Thread Rebecca Ross
Dear All, I am new to this list, so apologies if this question has been asked and answered many times before! I would like to overlay a bubble chart onto a map so that the bubbles correspond to particular points on the map. I have the shape file for the map and the lat long co-ordinates for

Re: [R-sig-Geo] Overlay bubble chart on map

2009-08-16 Thread Barry Rowlingson
On Sun, Aug 16, 2009 at 12:20 PM, Rebecca Rossrebecca.r...@plants.ox.ac.uk wrote: Dear All, I am new to this list, so apologies if this question has been asked and answered many times before! I would like to overlay a bubble chart onto a map so that the bubbles correspond to particular

Re: [R-sig-Geo] Overlay bubble chart on map

2009-08-16 Thread Tomislav Hengl
Here is another example with overlay from the Reimann et al. (2008) book (this uses a raster map as background - this if often more impressive): http://www.statistik.tuwien.ac.at/StatDA/R-scripts/page151.html The code is rather long, but it will give you good ideas what you have to do. HTH T.