[R] moving-window (neighborhood) analysis

[Bert Gunter]

See the "Spatial" section under CRAN's Task views 

Bert Gunter
Genentech Nonclinical Statistics

-----Original Message-----
From: r-help-bounces at stat.math.ethz.ch
[mailto:r-help-bounces at stat.math.ethz.ch] On Behalf Of Carlos "Guâno"
Grohmann
Sent: Wednesday, June 27, 2007 8:27 AM
To: r-help at stat.math.ethz.ch
Subject: [R] moving-window (neighborhood) analysis

Hello all

I was wondering what would be the best way to do a moving-window
analysis of a matrix? By moving-window I mean that kind of analysis
common in GIS, where each pixel (matrix element) of the resulting map
is a function of it neighbors, and the neighborhood is a square
matrix.
I was hoping there was some function in R that could do that, where I
could define the size of the neighborhood, and then apply some
function to the values, some function I don't have in GIS packages
(like circular statistics).

thanks all.

Carlos


-- 
+-----------------------------------------------------------+
              Carlos Henrique Grohmann - Guano
  Visiting Researcher at Kingston University London - UK
  Geologist M.Sc  - Doctorate Student at IGc-USP - Brazil
Linux User #89721  - carlos dot grohmann at gmail dot com
+-----------------------------------------------------------+
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