[R-sig-Geo] Step characteristics on raster maps (Mathieu Basille)

[Edzer Pebesma]

I don't know. I can't reproduce your example, and a simple example on
the meuse data set:

library(sp)
library(fields)
data(meuse)
Tps(data.frame(meuse$x,meuse$y), meuse$zinc)

seemed to work. You could provide a reproducable example, or you could
contact the author(s) of the fields package, I believe they're not
listening to this list.
--
Edzer

On 10/03/2010 05:59 PM, Mathieu Basille wrote:
> Dear Arnaud,
> 
> This is actually on my todo list, a test with the polygon approach,
> although I'm not sure how to start to "polygonize" the segments... But
> in the end, that would allow a performance comparison with different
> approaches (and that would also allow the calculation of the
> characteristics of buffers around the segments, which might be
> interesting for us, too).
> 
> Thanks for the suggestion,
> Mathieu.
> 
> 
> Le 03/10/2010 10:04, Arnaud Mosnier a écrit :
>> Hi Mathieu,
>>
>> An easy workaround could be to convert each segment to a polygon doing a
>> very small buffer around each segment then use the overlay method to
>> obtain info in each of these polygon.
>>
>> Arnaud
> 

-- 
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