Given the following data (see below) on nest locations (fid.albers = 149,
148, etc.), I need to (a) calculate the distance between all fid pairs, and
(b) flag all nests within an user-specified radius. What syntax will
accomplish both tasks? If it helps, I have the nest locations as eastings
and northings as well but thought better of estimating distance by
calculating the root of the hypotenuse between all nest pairs.
x.albers y.albers fid.albers
[1,] 723557 671748 149
[2,] 723384 671867 148
[3,] 723375 671757 147
[4,] 723363 671824 146
best
Ani
Anirudh V. S. Ruhil, Ph.D.
Sr. Research Associate
Voinovich Center for Leadership and Public Affairs
Ohio University
Building 21, The Ridges
Athens, OH 45701-2979
Tel: 740.597.1949 | Fax: 740.597.3057