Dear Jesse,
You can look at the functions in the DCluster package for the (purely)
spatial scan statistic. You could start from there. I have also some
other code for spatio-temporal clustering that I have not yet released
(and I believe that the permutation algorithm may not be tuned) but I
will
Hi,
> geoR has SpatialPointsDataFrame to geodata - but does it have the
> other way round too? Or is that in sp? It doesn't matter too much,
> since students will find them either way, but does
> as.sp(as.geodata('meuse","zinc")) get you back where you started?
But the problem is that this is no
Hi,
You could also check the book "R Graphics" by Paul Murrell. You can see
an example of a map (of Australia) with some other graphs on it here:
http://www.stat.auckland.ac.nz/~paul/RGraphics/chapter7.html
He also provides the source code.
Hope this helps,
Virgilio
El dom, 04-04-2010 a las 1
Dear all,
I believe that this conference will be of interest to some of the people on
this list.
We are hoping to organise a specific session(s) on spatial and spatio-temporal
data analysis, depending on the number of submissions. There will also
be a 3-hour tutorial on spatial data analysis the
Hi,
> I checked the adjacency matrix of the spatial weights list output object,
> and a zero integer was placed at the position corresponding to the area with
> no neighbours.
Yes. Probably we need to fix this so that nothing is added when an area
has no neighbours.
> When I re-ran the analysis
Hi Joe,
> I am using space-time cluster analysis to search for areas/times of high
> disease incidence. My data is aggregated by geographic areas with known
> background population numbers. So under the null hypothesis, the number of
> cases in a given location/time period is Poisson distribute
Hi John,
Not sure how to address your initial question but it looks like what you
are doing is similar to preferential sampling. If so, you may want to
look at the paper Geostatistical Inference under Preferential Sampling.
The authors provide provide code and data at
http://www.lancs.ac.uk/~diggl
Hi,
> I'm facing problems using Sweave with spplot... there is no error
> message but the pdf produced has errors and then latex compilation
> fails... I really don't know where that come from, did anyone
> experience something similar?
Have you embedded the spplot() function inside a print() fun
Dear Everton,
> Regarding the rotine that identifies the possible cluster locations, I do
> not know which value should I consider for the fractpop. The spatial
> clustering is very associated to this value and, depending of the considered
> value for the fractpop, I get a different spatial confi
Hi,
> Does anyone know any examples of Bi- or Tri-variate maps
> for R like this ArcVie example?
I do not know of any code to do this. However, I am not sure if this is
the best way of displaying bivariate data in one map. The map in Section
IV is difficult to interpret (to me at least). Wouldn'
Hi,
I am also interested in this convertion function. In fact, yesterday
night I wrote some code to convert from PolySet to SP, but Roger's code
is much better than mine...
If nobody is already doing it, can I take Roger's code, add a few checks
and make a function to be included in, say, maptoo
Hi,
> #errors occurs
> env.lab <- Kenv.label(case_pts,control_pts,splancs_poly, nsim=999, seq
> (0,23000,500))
> error:v error in erifyclass(X, "ppp") : argument 'X' is not of class
> 'ppp'
>
> Q1: Now that khat(splancs) goes fine, why not Kenv.label(splancs)?
> From the help, it didn't
Hi,
El mié, 21-03-2007 a las 22:45 +0800, zhijie zhang escribió:
> Dear friends,
> I have a .shp file of region boundary, and i want to use it as the polygon
> in the khat(splancs) function, but it goes wrong.
> # khat(pts,poly,s,newstyle=FALSE)
>
> guichi<-readShapePoly("d:/d/guichi2.shp") #
Dear all,
First of all, apologies if I am making a wrong use of this list,
but we have been working on a package to implement EBLUP and Spatial
EBLUP estimators (code provided by Nicola Salvati) for Small Area
Estimation and we would like to announce it in this list. The package
itself contains a
Hi David,
My setting to connect to the CVS are:
export CVSROOT=":ext:[EMAIL PROTECTED]:/cvsroot/r-spatial"
export CVS_RSH=ssh
You will need to change the server to r-spatial.cvs.sf.net. I do not
know why, but it works.
Best,
Virgilio
El vie, 02-02-2007 a las 14:45 -0600, David Forrest escrib
Hi,
El vie, 08-12-2006 a las 09:59 +0800, Adrian Baddeley escribió:
> Virgilio Gomez-Rubio writes:
>
> > Diggle (2003), for example, describes what you ask and most of the
> > examples in the book can be reproduced using package Splancs. Check
> > manual page of function mse2d and references (in
Dear Debarchana,
I think that you could check any of the good books about point patterns
that there are currently out there. Diggle (2003), for example,
describes what you ask and most of the examples in the book can be
reproduced using package Splancs. Check manual page of function mse2d
and ref
Hi,
I think that your problem is related to the scale of your data. Can you
give us the bounding box
of the region that contains your data. Perhaps you need to change that
0.01 to a more
reasonable value.
Best,
Virgilio
El lun, 04-12-2006 a las 13:35 -0600, Debarchana Ghosh escribió:
> ppp_wn
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