[R-sig-Geo] Gstat 'polylines' implemented in R?

[Tim Peterson]

Hi all,

I'm keen to use the gstat feature 'polylines' (appendix B in 
http://www.gstat.org/gstat.pdf) to restrict the point sample selection 
to within a polygon. That is, when undertaking localised kriging at a 
grid cell, samples are only used in the estimation if a line between the 
sample and grid cell does not cross a polygon boundary. The polylines 
feature appears to be implemented within the c-code for gstat 
(polygon.c) but I cannot find any means to use it within R-gstat nor any 
mention on lists. Any tips would be most welcome.

Thanks,

Tim

----------------------
Dr. Tim Peterson

The Department of Infrastructure Engineering
The University of Melbourne, 3010 Australia
T: +61 3 8344 9950 <tel:%2B61%203%208344%209950>, M: +61 0438 385 937 
<tel:%2B61%200438%20385%20937>

Dept. profile : 
http://www.ie.unimelb.edu.au/people/staff.php?person_ID=141135
Research Gate : https://www.researchgate.net/profile/Tim_Peterson7
Google Scholar: 
http://scholar.google.com.au/citations?user=kkYJLF4AAAAJ&hl=en&oi=ao

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