2013/5/16 Alemu Tadesse alemu.tade...@gmail.com
I am plotting a krigged values of irrdiance with the following command.
spplot(p1, zcol=insol.pred, col.regions=terrain.colors(30), cuts=30,
sp.layout=list(pts1), contour=TRUE, labels=TRUE, pretty=TRUE, col='brown',
main=title1)
I want to
Hi all,
Following code computes Euclidian distance from each point to it nearest
neighbour:
library(spatstat)
y - rnorm(30, 55.65, .008)
x - rnorm(30, -1.82, .01)
xy - cbind(x, y)
nndist(xy)
Is it possible to use distance in metres, not Euclidian distances? Here are
same points projected:
Dear Ross,
Euclidean Distance is not an units, it is a type of distance measurement an it
is always in input units!
The Euclidean Distance is the length of a rope between your hands that you hold
strained, but see here: http://en.wikipedia.org/wiki/Euclidean_distance
I'm not getting any help from r-sig-mixed mailing list, so I thought I'd
ask this here as it is related to spatial modeling.
Questions:
1. Is there anything obviously wrong in concept or code with the following
approach?
2. How do I extract residuals from models using correlation= argument so
Ross,
The geodist function in the package GMT will compute distance in all sorts of
units (m, km etc.) from lat longs.
Hugh
Date: Thu, 16 May 2013 14:16:03 +0100
From: rossah...@googlemail.com
To: r-sig-geo@r-project.org
Subject: [R-sig-Geo] nearest neighbour using distance in metres
Hi
Just FYI, there is tripack::circumcircle, here's an example with data
in the maptools package.
library(maptools)
data(wrld_simpl)
poly - wrld_simpl[wrld_simpl$NAME == Australia, ]
## use coercion to get raw vertices (long winded, but avoids @ usage)
coords - coordinates(as(as(poly,
