[R-sig-Geo] error calling gstat::idw.locations

[Anthony Fischbach]

Thank you! That solved it.

> loc.idw <- idw(value~1, NARR, loc, idp = 1.0, debug.level = 1) 
[inverse distance weighted interpolation]
> 
> loc.idw
      coordinates var1.pred var1.var
1 (-170.27, 70.6)  1.268308       NA


-----
Tony Fischbach, Wildlife Biologist
Walrus Research Program
Alaska Science Center
U.S. Geological Survey
4210 University Drive
Anchorage, AK 99508-4650

AFischbach at usgs.gov
http://alaska.usgs.gov/science/biology/walrus
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