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asap
2009 Apr 04
1
error in trmesh (alphahull package)
...it might have to do with the
spatial arrangement of my points). See below:
# first here's a quick sample of my data (UTM coordinates)
> xcoords[1:5]
[1] 670080.2 670080.2 670080.2 670080.2 670080.2
> ycoords[1:5]
[1] 5005501 5005499 5005498 5005497 5005495
> xcoords[1:5]
#try the ashape routine with error
> alpha.shape<-ashape(xcoords,ycoords,15)
Error in tri.mesh(X) : error in trmesh
#get statistics to generate a similar dataset to test against
> length(xcoords)
[1] 26257
> length(ycoords)
[1] 26257
> mean(xcoords)
[1] 670462.4
> mean(ycoords)
[1] 5005382...