Joshua,
My guess is that to estimate beta geoR uses generalized least squares
and lm and SAS ordinary least squares. If you use a pure nugget model,
or some other model with a range parameter sufficiently close to zero,
i.e. model the observations as independent, the estimates should be the
s
Hello everyone,
I am using the excellent geoR package to perform Kriging with External
Drift. As to be expected, for any given set of covariates, trend
coefficients I obtain performing least-squares regression in SAS equal those
coefficients obtained by using R's lm function. However, those tren
Very interesting work, Paulo.
Can you display from R on the TerraView window?
I dream with a GIS tool (A GIS display tool for R? An R plugging for
Qgis? etc)
that could display spatial R objects. This is beyond current
tools, based on exporting (hence duplicating space and troubles)
R objects to
Peter
There may be other alternatives, but
this is one of the functionalities in an external software (terralib) that
the aRT package tries to make usage.
The aRT web page has one example:
www.leg.ufpr.br/aRT
Paulo Justiniano Ribeiro Jr
LEG (Laboratório de Estatística e Geoinformação)
Universida
Hi Peter,
I've been doing this in postgis. Once you get used to it, its not too
difficult. Load data with shp2pgsql (or use rgdal + RODBC or similar
if you want to stay in R) and then create a new table to hold the
results. After that you can do "insert into restab select
buffer(the_geom, dist) fr
Dear R gurus,
I am very excited about all the spatials tools in R because they have
almost liberated me from ESRI products. One of the last things I have
yet to figure out how to do in R is to create buffers around polygons
(or just expand polygons). I searched the R-sig-geo archives (using
Go
Dear Rusers,
I'd like to take the cases of cancer of the larynx in chorley(spatstat) to
explain my question.
I want to join the points of cancer of the larynx with the disused
industrial incinerator to generate lines, and then calculate the angles of
these line comparing the horizontal line?
