[R] Euclidean Distance in R

Paul Duckett paul.duckett at mq.edu.au
Tue Apr 5 03:43:54 CEST 2011


1. I have two raster files *.asc (identical size)
2. The data in each contain presence or absence data in each cell
represented by a 1 or 0 respectively
3. I would like to take the location of each 1 (presence cell) in
raster file 1 and measure the euclidean distance to the nearest 1
(presence cell) in raster file 2.

Obviously in some cases there will be overlap so the distance will be zero.

4. I would like the output file to have each individual measurement on
a seperate line in a single file.

I am very new to R, so any help would be appreciated.

Best regards
Paul Duckett - PhD Candidate
Conservation Genetics Lab
E8A 264
Biological Sciences
Faculty of Science
Macquarie University
North Ryde
NSW 2109

More information about the R-help mailing list