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Does anyone know an alternate way of calculating R2n with spatial data other than converting values into ltraj format (adehabitat package)? I have a series of geographic xy coordinates (in metres). I imagine I can subtract x1y1 from x2y2 to get the spatial difference (dxdy), but what function can I use to calculate R2n (i.e. net squared displacement) using this information? Tyler -- View this message in context: http://www.nabble.com/Calculate-individual-R2n-values-tp20117821p20117821.html Sent from the R help mailing list archiv...