On Fri, 10 Nov 2006, Frosch, Katharina wrote:
> Dear all,
>
> I work with a county map of Germany and have to merge 100 out of 440
> counties in total. I tried several ways, using unionSpatialPolygons from
> the spgpc package and combine union and append commands from the gpclib
> package, but d
Dear all,
I work with a county map of Germany and have to merge 100 out of 440
counties in total. I tried several ways, using unionSpatialPolygons from
the spgpc package and combine union and append commands from the gpclib
package, but did not succeed. What is the best and most "elegant" way to
Thanks a lot for your precious help, it worked perfectly. Most probably,
the first errors arose from importing a shapefile where I merged some
counties using MapViewer - perhaps the newly created shapefile was a bit
messy.
However, I now have the problem that I have to repeat the merging of 100
o
Dear friends,
I wanted to know how to do a principle component analysis (PCA) from
geo-referenced points.
I have a list like:
geo$xy with coordinates,
and geo$data with the data that I want to do the analysis
is this right?
+++
Carlos GUERRA
Instituto P
