Message-ID: <51CC24A3.3000802@aol.com>
Date: 2013-06-27T11:40:19Z
From: Carsten Neumann
Subject: nearest neighbor 3d point pattern
Dear list members,
after searching R mailing lists, I wonder if there is a R function that
can find the nearest neighbor/or just euclidean distance of points in
one 3D coordinate system to points in another 3D coordinate system. The
function nncross {spatstat} can only deal with 2D point pattern. Any
idea or experiences with such procedures?
######################Test Data############################
point1<-array(c(seq(0,1,0.1),seq(0,1,0.1),seq(0,1,0.1)),dim=c(11,11,11))
point2<-array(c(0.8,0.3,0.5),dim=c(1,1,1))
#########################################################
question: where is point2 in point1?
Thanks in advance
Carsten
--
Carsten Neumann
Telegrafenberg, A 17 01.13
14473 Potsdam
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Helmholtz Centre Potsdam
GFZ German Research Centre for Geosciences
Department 1 - Section 1.4 - Remote Sensing
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Tel.: +49 (0) 331 288 1766
e-mail: carstenn at gfz-potsdam.de