I tried the spatstat package. In the meanwhile, I think that I found the
solution: with the pp3 command, I was able to create a pp3 object that
is recognized by nndist.
I will give a look at the other packages you mentioned seeing what are
the differences.
Anyway, thank you for your answer.
*Eric Leroy*
/Responsable de la plateforme microscopie électronique/
ICMPE - UMR 7182 - CNRS - UPEC
2/8, rue Henri Dunant
94320 Thiais
Tél : 01.49.78.12.09
Fax : 01.49.78.12.03
courriel : eric.le...@icmpe.cnrs.fr <mailto:eric.le...@icmpe.cnrs.fr>
Page Web : : http://www.icmpe.cnrs.fr
Le 06/02/2019 à 17:06, David L Carlson a écrit :
What have you tried so far? Have you installed the spatstat package and read
the manual page for pp3 objects? The website spatstat.org has additional
support including a quick reference guide. There are always multiple ways to do
something in R, but without more details it is hard to be specific. Nearest
neighbor distances are also provided in several other packages, e.g. packages
FNN, distances, and RANN.
----------------------------------------
David L Carlson
Department of Anthropology
Texas A&M University
College Station, TX 77843-4352
-----Original Message-----
From: R-help <r-help-boun...@r-project.org> On Behalf Of Eric Leroy
Sent: Wednesday, February 6, 2019 2:37 AM
To: r-help@r-project.org
Subject: [R] Nearest neighbors of a of 3D points
Hi,
I have a text file that contains the 3D coordinates of points and I want
to plot the histogram of the nearest neighbors distance. I can import
the xyz coordinates in R and each value x, y, z is stored in a numerical
array. I discovered the nndist.pp3 function from the spatstat package
that seems to do what I want. My problem is to create a pp3 object from
the xyz values that I have.
Do you know how to do that ?
Best regards,
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