Message-ID: <44AA2490.4040007@geo.uu.nl>
Date: 2006-07-04T08:19:28Z
From: Edzer Pebesma
Subject: how do we sample in spatial statistics?
In-Reply-To: <2fc17e30607040103l27de228bh64e36a7561ab94b8@mail.gmail.com>
zhijie zhang wrote:
> Dear friends,
> Sorry for sending an empty email because of mismanipulation.
> Do we also use sample() function to do the spatial sampling? I look for
> the sample() and think it's one-dimensional sampling.
> In spatial statistics, do we need two-dimentional sampling or some other
> sampling techniques? Which functions could be used in spatial samping in R?
> thanks very much!
>
>
spsample in package has a few simple spatial sampling techniques
(basically those described in Ripley, 1981: random, regular,
stratified, nonaligned systematic) on lines, polygons and
grids. More advanced sampling techniques are found in
package spatstat.
--
Edzer