[R-sig-Geo] Extract values with over()

[Edzer Pebesma]

On 11/21/2011 08:47 PM, ASANTOS wrote:
> Dear colleges,
> 
>      I try to extract values with over () function , but not working
> with my script, when I make:
> 

it only extracts values when there are values to extract, please read
the documentation.

> 
> was expected that the over() give the frequency of points inside each
> parcel

I wonder where you got this expectation from. If the documentation gave
you this expectation, please let me know.

table() can compute frequencies from indices.
-- 
Edzer Pebesma
Institute for Geoinformatics (ifgi), University of Münster
Weseler Straße 253, 48151 Münster, Germany. Phone: +49 251
8333081, Fax: +49 251 8339763  http://ifgi.uni-muenster.de
http://www.52north.org/geostatistics      e.pebesma at wwu.de