Re: [R] maptools/spatial analysis question

Albert-Jan Roskam yahoo.com> writes: > > Hi, > > I am using maptools to plot air quality data on a map. Each measurement point is mapped to a postal code area. > This yields pictures with discrete borders, like so: > http://dl.dropbox.com/u/27415200/baincome.png > The problem is that the size o

[R] maptools/spatial analysis question

Hi, I am using maptools to plot air quality data on a map. Each measurement point is mapped to a postal code area. This yields pictures with discrete borders, like so: http://dl.dropbox.com/u/27415200/baincome.png The problem is that the size of a postal code area doesn't mean much in this cont