-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 On 05/04/11 03:43, Paul Duckett wrote: > Hi
Hi > > 1. I have two raster files *.asc (identical size) This question is much more appropriate for the r-sig-geo mailing list (https://stat.ethz.ch/mailman/listinfo/r-sig-geo), which focusses on spatial analysis / modelling in R. I am sure you will get an answer there. I take the liberty to CC this mail to the list - and I would encourage you to subscribe to the mailing list. Cheers, Rainer > 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 - -- Rainer M. Krug, PhD (Conservation Ecology, SUN), MSc (Conservation Biology, UCT), Dipl. Phys. (Germany) Centre of Excellence for Invasion Biology Natural Sciences Building Office Suite 2039 Stellenbosch University Main Campus, Merriman Avenue Stellenbosch South Africa Tel: +33 - (0)9 53 10 27 44 Cell: +27 - (0)8 39 47 90 42 Fax (SA): +27 - (0)8 65 16 27 82 Fax (D) : +49 - (0)3 21 21 25 22 44 Fax (FR): +33 - (0)9 58 10 27 44 email: rai...@krugs.de Skype: RMkrug -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.10 (GNU/Linux) Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org/ iEYEARECAAYFAk2a0sUACgkQoYgNqgF2egqpqACfa2FdwXYwn7i+woC6RnFnURE8 p2kAn1Q833jkNyG9EfkQUIoycsdlDJWp =aykq -----END PGP SIGNATURE----- ______________________________________________ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.