Re: [R-sig-Geo] PCA (Factor Analysis) with R spatial

2010-04-07 Thread Stéphane Dray
. Brian Cooper [[alternative HTML version deleted]] ___ R-sig-Geo mailing list R-sig-Geo@stat.math.ethz.ch https://stat.ethz.ch/mailman/listinfo/r-sig-geo -- Stéphane DRAY (d...@biomserv.univ-lyon1.fr ) Laboratoire BBE-CNRS-UMR

Re: [R-sig-Geo] John Snow's cholera data/map: a more sp-ish way?

2009-10-30 Thread Stéphane Dray
geo/2009-October/006673.html and this one. I encourage others to join in, because the R-forge package has the potential to become a valuable resource. Best wishes, Roger -Michael -- Stéphane DRAY (d...@biomserv.univ-lyon1.fr ) Laboratoire BBE-CNRS-UMR-5558, Univ. C. Bernard - Lyon I 43, B

Re: [R-sig-Geo] plotting Football field ball pattern data

2009-01-30 Thread Stéphane Dray
sig-Geo mailing list R-sig-Geo@stat.math.ethz.ch https://stat.ethz.ch/mailman/listinfo/r-sig-geo -- Stéphane DRAY (d...@biomserv.univ-lyon1.fr ) Laboratoire BBE-CNRS-UMR-5558, Univ. C. Bernard - Lyon I 43, Bd du 11 Novembre 1918, 69622 Villeurbanne Cedex, France Tel: 33 4 72 43 27 57 Fax: 33 4 72

Re: [R-sig-Geo] pcnm - scaling

2008-12-18 Thread Stéphane Dray
s://stat.ethz.ch/mailman/listinfo/r-sig-geo -- Stéphane DRAY (d...@biomserv.univ-lyon1.fr ) Laboratoire BBE-CNRS-UMR-5558, Univ. C. Bernard - Lyon I 43, Bd du 11 Novembre 1918, 69622 Villeurbanne Cedex, France Tel: 33 4 72 43 27 57 Fax: 33 4 72 43 13 88

Re: [R-sig-Geo] Principal Component Analysis - Selecting components? + right choice?

2008-12-12 Thread Stéphane Dray
y using something different from PCA? Best, -- Stéphane DRAY (d...@biomserv.univ-lyon1.fr ) Laboratoire BBE-CNRS-UMR-5558, Univ. C. Bernard - Lyon I 43, Bd du 11 Novembre 1918, 69622 Villeurbanne Cedex, France Tel: 33 4 72 43 27 57 Fax: 33 4 72 43 13 88 http://biomserv.univ-lyon1.fr/~dray/

Re: [R-sig-Geo] Spatial autocorrelation of binary data

2007-07-13 Thread Stéphane Dray
or Joint-Count statistics? The data is in the format 1 and 0. > > Thanks in advance, > Debs. > > -- Stéphane DRAY ([EMAIL PROTECTED] ) Laboratoire BBE-CNRS-UMR-5558, Univ. C. Bernard - Lyon I 43, Bd du 11 Novembre 1918, 69622 Villeurbanne Cedex, France Tel: 33 4 72

[R-sig-Geo] OT : get lat-long coordinates

2007-07-11 Thread Stéphane Dray
A 4 ? - Do you know some sites/free tools that can be used to obtain the spatial coordinates ? Thanks in advance, Sincerely. -- Stéphane DRAY ([EMAIL PROTECTED] ) Laboratoire BBE-CNRS-UMR-5558, Univ. C. Bernard - Lyon I 43, Bd du 11 Novembre 1918, 69622 Villeurbanne Cedex, France Tel: 33 4 7

Re: [R-sig-Geo] efficient code/function for rectangular SP weight Matrix and gwr

2007-05-11 Thread Stéphane Dray
l clustering of > patient level factors. > > > thanks! > > Sam > > ___ > R-sig-Geo mailing list > R-sig-Geo@stat.math.ethz.ch > https://stat.ethz.ch/mailman/listinfo/r-sig-geo > > > -- Stéphane DRAY ([EM

[R-sig-Geo] importing a shapefile stored on a server

2007-03-29 Thread Stéphane Dray
ownload.file and then read the shapefile but I wonder if it would be possible to read directly the data from the url. Cheers. -- Stéphane DRAY ([EMAIL PROTECTED] ) Laboratoire BBE-CNRS-UMR-5558, Univ. C. Bernard - Lyon I 43, Bd du 11 Novembre 1918, 69622 Villeurbanne Cedex, France

Re: [R-sig-Geo] intersection of two polygons

2007-03-21 Thread Stéphane Dray
class was its relationship to nb object. Now, poly2nb also accepts SpatialPolygons so what about polylist ? Thanks, Roger Bivand wrote: > On Tue, 20 Mar 2007, Stéphane Dray wrote: > > >> I have a code that do the job for polylist objects at >> http://biomserv.univ

Re: [R-sig-Geo] intersection of two polygons

2007-03-20 Thread Stéphane Dray
t;> Sébastien Ollier >> Maître de Conférences >> Université Paris-Sud 11 >> Faculté des Sciences d'Orsay >> Unité Ecologie, Systématique et Evolution >> Département Biodiversité, Systématique et Evolution >> UMR - 8079 UPS-CNRS-ENGREF >> Bât. 360, 91405

Re: [R-sig-Geo] subselection of Polygons

2007-03-02 Thread Stéphane Dray
Sorry, the line which does not work is : xxx <- xx[-which(xx$SID74 < 2),] Stéphane Dray wrote: > Hello list, > > I have a question concerning the [ operator for SPDF. Consider the > following example : > > library(maptools) > xx <- readShapePoly(system.f

[R-sig-Geo] subselection of Polygons

2007-03-02 Thread Stéphane Dray
I can easily have the inverse selection by using '-' but it does not work : xxx <- xx[which(xx$SID74 < 2),] returns the following error message : Erreur dans validObject(.Object) : invalid class "SpatialPolygons" object: length mismatch I do not understand what is the p

Re: [R-sig-Geo] Moran's I - nb class?

2006-07-24 Thread Stéphane Dray
27;t understand how to create the object of class >nb and which function to use to create it. > >Any help will be appreciated. > >Thanks, >Debarchana. > > > -- Stéphane DRAY ([EMAIL PROTECTED] ) Laboratoire BBE-CNRS-UMR-5558, Univ. C. Bernard - Lyon I 43, Bd du 11 Novembr