How can I do boxcox transformation for explanatory variables and use it in a multiple linear regression?
Kind regards, ISRAEL O. IKOYI MSc. Thesis Research Student Wageningen University Department of Soil Quality P.O. Box 47 NL-6700 AA Wageningen The Netherlands ________________________________ From: "r-sig-geo-requ...@r-project.org" <r-sig-geo-requ...@r-project.org> To: r-sig-geo@r-project.org Sent: Wednesday, June 26, 2013 12:00 PM Subject: R-sig-Geo Digest, Vol 118, Issue 25 Send R-sig-Geo mailing list submissions to r-sig-geo@r-project.org To subscribe or unsubscribe via the World Wide Web, visit https://stat.ethz.ch/mailman/listinfo/r-sig-geo or, via email, send a message with subject or body 'help' to r-sig-geo-requ...@r-project.org You can reach the person managing the list at r-sig-geo-ow...@r-project.org When replying, please edit your Subject line so it is more specific than "Re: Contents of R-sig-Geo digest..." Today's Topics: 1. Re: spatial networks (Forrest Stevens) 2. NetCDF to Brick (JacobF) 3. Re: Is it possible to merge togheter different ENFA results? (Mathieu Basille) 4. Problems with readOGR (Renger van Nieuwkoop) ---------------------------------------------------------------------- Message: 1 Date: Tue, 25 Jun 2013 09:17:36 -0400 From: Forrest Stevens <forr...@ufl.edu> To: "r-sig-geo@r-project.org" <r-sig-geo@r-project.org> Subject: Re: [R-sig-Geo] spatial networks Message-ID: <CAEBQMM=PrKEYQKL=viksg+obygd6j4-0ktke44ewx0vdt6v...@mail.gmail.com> Content-Type: text/plain; charset=ISO-8859-1 Hi Edzer, this is definitely very cool. This may make some recent work I've been doing on spatial and social network analyses of academic co-authorship easier (early code is here if you're interested: http://refnet.r-forge.r-project.org/ ). Thanks for [[elided Yahoo spam]] Sincerely, Forrest On Sun, Jun 23, 2013 at 10:20 PM, Thomas Adams <tea...@gmail.com> wrote: > Edzer, > > That's really pretty cool stuff; I think I can find some applications for > it! > > Cheers! > Tom > > > On Sun, Jun 23, 2013 at 5:57 PM, Edzer Pebesma < > edzer.pebe...@uni-muenster.de> wrote: > >> I did some simple things trying to combine sp and igraph objects to >> create spatial networks, and published this at: >> >> http://rpubs.com/edzer/spatialnetworks >> >> I'd be happy to share the markdown document with you; it seems to me >> that the rpubs don't allow you to simply download & run all the commands >> in the html. >> >> Anyway, comments & discussion welcome, as usual. >> -- >> Edzer Pebesma >> Institute for Geoinformatics (ifgi), University of M?nster >> Weseler Stra?e 253, 48151 M?nster, Germany. Phone: +49 251 >> 83 33081, Fax: +49 251 8339763 http://ifgi.uni-muenster.de >> >> _______________________________________________ >> R-sig-Geo mailing list >> R-sig-Geo@r-project.org >> https://stat.ethz.ch/mailman/listinfo/r-sig-geo >> > > [[alternative HTML version deleted]] > > > _______________________________________________ > R-sig-Geo mailing list > R-sig-Geo@r-project.org > https://stat.ethz.ch/mailman/listinfo/r-sig-geo > -- Forrest R. Stevens Ph.D. Candidate, QSE3 IGERT Fellow Department of Geography Land Use and Environmental Change Institute University of Florida www.clas.ufl.edu/users/forrest ------------------------------ Message: 2 Date: Tue, 25 Jun 2013 10:53:41 -0700 (PDT) From: JacobF <jsf...@mail.missouri.edu> To: r-sig-geo@r-project.org Subject: [R-sig-Geo] NetCDF to Brick Message-ID: <1372182821195-7583910.p...@n2.nabble.com> Content-Type: text/plain; charset=us-ascii I'm having an issue with creating a raster brick from a NetCDF. Normally this works fine but for a file I recently downloaded the time and X dimensions are getting swapped so I get a brick with dimensions 72, 7300, 525600, 110 (nrow, ncol, ncell, nlayers), when it should be 72, 110, 7920, 7300 (nrow, ncol, ncell, nlayers). I haven't seen any documentation for setting the x, y and z variables when creating a brick, only when outputting one as a NetCDF. -- View this message in context: http://r-sig-geo.2731867.n2.nabble.com/NetCDF-to-Brick-tp7583910.html Sent from the R-sig-geo mailing list archive at Nabble.com. ------------------------------ Message: 3 Date: Tue, 25 Jun 2013 14:55:26 -0400 From: Mathieu Basille <basille....@ase-research.org> To: Michela Giusti <michela.giu...@isprambiente.it> Cc: "r-sig-geo@r-project.org" <r-sig-geo@r-project.org> Subject: Re: [R-sig-Geo] Is it possible to merge togheter different ENFA results? Message-ID: <51c9e79e.1060...@ase-research.org> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Dear Michela, I'm not quite sure to understand what you really intend to do. I can see that you performed individual ENFAs for each of your study site. This is fair, although you might be interested in the OMI for that multi-niche comparison (see ?niche in package ade4, and reference [1]). But now, you want to perform a MADIFA on top of this? It does not make sense to me... Here, I'm really not sure what you want to do. Finally, a single analysis for the 3 sites at once might also make sense, and this is largely feasible with R. It will need a little bit of tweaking though. All you have to do is to combine the results after the extraction of the environmental characteristics and the vector of presence (before the PCA). Hope this helps, Mathieu Basille. [1] Doledec, S.; Chessel, D. & Gimaret Carpentier, C. (2000) Niche separation in community analysis: A new method. Ecology, 81: 2914-2927 doi 10.1890/0012-9658(2000)081[2914:NSICAA]2.0.CO;2 Le 06/25/2013 05:36 AM, Michela Giusti a ?crit : > Hello everybody , > > I have a question regarding ENFA process. > > I have 3 sites far from one another along the Mediterranean Sea. > I performed 3 different ENFA (one for each site; the species is the same > for each site). > > Now I would like to merge togheter the 3 ENFA results to have the final > result and to perform the final MADIFA on it. > > Is it possible to do that? I tryed also to do a single ENFA on the 3 sites > from the beginning of my analysis , but I had problems with the extents of > the rasters. > > Thank you very much for your help. > > Bye, > > Michela > -- ~$ whoami Mathieu Basille, PhD ~$ locate --details University of Florida \\ Fort Lauderdale Research and Education Center (+1) 954-577-6314 http://ase-research.org/basille ~$ fortune ? Le tout est de tout dire, et je manque de mots Et je manque de temps, et je manque d'audace. ? -- Paul ?luard ------------------------------ Message: 4 Date: Wed, 26 Jun 2013 09:16:39 +0000 From: Renger van Nieuwkoop <ren...@vannieuwkoop.ch> To: "R-sig-Geo@r-project.org" <R-sig-Geo@r-project.org> Subject: [R-sig-Geo] Problems with readOGR Message-ID: <5e17ccd4aace3a4c8cff411186ae81903195e...@exdag30-n1.hostallapps.net> Content-Type: text/plain Hi I tried running the following code using the shapefiles for the city of Zurich require("rgdal") # requires sp, will use proj.4 if installed require("maptools") zh = readOGR(".",layer="Zurich") and got following error: OGR data source with driver: ESRI Shapefile Source: ".", layer: "Zurich" with 34 features and 6 fields Feature type: wkbPolygon with 2 dimensions Fehler in CRS(p4s) : lat_0 = 0 or 90 or alpha = 90 ogrInfo gives me this: ogrInfo(".","Zurich") Source: ".", layer: "Zurich" Driver: ESRI Shapefile number of rows 34 Feature type: wkbPolygon with 2 dimensions Extent: (676227 241585) - (689671 254305.7) CRS: +proj=omerc +lat_0=46.95240555555556 +lonc=7.439583333333333 +alpha=90 +k=1 +x_0=-9419820.590700001 +y_0=200000 +ellps=bessel +units=m +no_defs LDID: 87 Number of fields: 6 name type length typeName 1 GMDEQNR 0 7 Integer 2 NR 0 9 Integer 3 NAME 4 45 String 4 GMDE 0 9 Integer 5 FLAECHE_HA 0 9 Integer 6 Quartier 0 4 Integer I can see that lat_0 is not equal to zero, but don't know how to resolve this issue. Thanks in advance for help Renger _________________________________________ Renger van Nieuwkoop Centre for Energy Policy and Economics, ETH Zürichbergstrasse 18 (ZUE) CH - 8032 Zürich +41 44 632 02 63 mailto: reng...@etzh.ch<mailto:reng...@etzh.ch> blog.modelworks.ch [[alternative HTML version deleted]] ------------------------------ _______________________________________________ R-sig-Geo mailing list R-sig-Geo@r-project.org https://stat.ethz.ch/mailman/listinfo/r-sig-geo End of R-sig-Geo Digest, Vol 118, Issue 25 ****************************************** [[alternative HTML version deleted]]
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