In gwr(), it's actually adapt = 0.1. It was a typo in my previous email.
And actually before you ask this question, you shall really follow what
Roger said, "READ THE HELP PAGES". Do some homework (Roger has already
answered your question in his previous email, highlights by me, see:
>>>>>>READTHEHELPPAGES!
>>>>>>
>>>>>>adaptive_proportion<-gwr.sel(...)
>>>>>>
>>>>>>/*result<-gwr(...,adapt=adaptive_proportion;...)*/
>>>>>>
>>>>>>exactlyasontheexampleomthehelppage:
>>>>>>
>>>>>>data(georgia)
>>>>>>g.adapt.gauss<-gwr.sel(PctBach~TotPop90+PctRural+PctEld
>>>>>>+PctFB+
>>>>>>PctPov+PctBlack,data=gSRDF,adapt=TRUE)
>>>>>>res.adpt<-gwr(PctBach~TotPop90+PctRural+PctEld+PctFB+
>>>>>>PctPov+
>>>>>>PctBlack,data=gSRDF,adapt=g.adapt.gauss)
>>>>>>res.adpt
)
In addition, if you are considering using R quite often, I would suggest
you try to read the codes that are provided by simply typing the name of
the function. This way, you'll learn about the parameters, how they are
used, what results are produced and how they are produced, etc. The
open-source codes will certainly tell you "more detail" (more than you
could imagine, I'd say).
Hope this helps.
Cheers,
Danlin
huangykiz дµÀ:
> Hi,
> Set In gwr.sel() or gwr()?. How to write the code about
> set"adpt"parameterto0.1? May you tell more detail.
> Thank you very much.
> Cheers,
>
> ÔÚ2010-05-1320:29:14£¬"DanlinYu"<y...@mail.montclair.edu>дµÀ£º
> >Youshallset"adpt"parameterto0.1.
> >
> >SentfrommyIphone
> >Dr.DanlinYu
> >AssistantProfessorofGIS,UrbanGeography
> >Earth&EnvironmentalStudies
> >MontclairStateUniversity
> >Montclair,NJ07043
> >Tel:973-655-4313
> >Fax:973-655-4072
> >Email:y...@mail.montclair.edu
> >
> >ÔÚMay13,2010£¬8:03AM£¬huangykiz<huangy...@163.com>дµ½£º
> >
> >>Hi,
> >>IfIwanttochangtheadaptiveSpatialKernel=10%neighborsin
> >>gwr()?Howtochangit?
> >>
> >>Thankyouverymuch.
> >>
> >>Cheers.
> >>
> >>
> >>
> >>
> >>ÔÚ2010-05-1317:43:06£¬"RogerBivand"<roger.biv...@nhh.no> дµÀ£º
> >>>OnThu,13May2010,huangykizwrote:
> >>>
> >>>>Hi,
> >>>
> >>>>IamsorryIsaythatIcannotgetthesameR^2betweeninR/spgwr
> >>>>and
> >>>>SAMinmydata.
> >>>
> >>>Establishthattheadaptiveproportionisexactlythesame.
> >>>
> >>>Youhaven'tdonethat-copyandpastefromSAMtogwr(),notusing
> >>>gwr.sel().DoitfirstforfixedGaussian,thenifyougetasensible
> >>>figurefromSAMforadaptive,dothesamethere.Iseeverydifferent
> >>>bandwidthschosenbySAMandbygwr.sel()andGWR3-gwr.sel()and
> >>>GWR3
> >>>usuallyagreefairlywellforCVfixedbandwidths,butgwr.sel()
> >>>typically
> >>>continuesitssearchalittlelongerthanGWR3.
> >>>
> >>>Idon'tknowhowSAMchoosesitsbandwidthoradaptiveproportion,
> >>>itis
> >>>closedsource,soonlyitsauthorsknow.
> >>>
> >>>IsSAMusingGreatCircledistances,ifso,youshouldset
> >>>longlat=TRUEin
> >>>gwr.sel()andgwr()?Areyourcoordinatesgeographical(decimal
> >>>degrees)
> >>>orprojected(metres)?
> >>>
> >>>Roger
> >>>
> >>>>InR/spgwr
> >>>>R^2:0.972989;
> >>>>AICc(GWRp.61,eq2.33;p.96,eq.4.21):4668.92
> >>>>Effectivenumberofparameters(model:traceS):435.7586;
> >>>>Effectivenumberofparameters(residual:2traceS-traceS'S):582.3581
> >>>>;
> >>>>Sigma(residual:2traceS-traceS'S):2.437066;
> >>>>Sigma(model:traceS):1.927127;
> >>>>Sigma(ML):1.325501;
> >>>>
> >>>>InSAM,
> >>>>CoefficientofDetermination:0.696
> >>>>Adjustedr-square(r?Adj):0.693
> >>>>Sigma:20.058
> >>>>EffectiveNumberofParameters:10.002
> >>>>AkaikeInformationCriterion(AICc):4838.299
> >>>>CorrelationCoefficient(r):0.834
> >>>>F:207.852
> >>>>
> >>>>Herearemycode:
> >>>>PET.adapt.gauss<-gwr.sel(SPECIES_RI~PET,
> >>>>data=Environmental_variables,coords=cbind(Environmental_variables
> >>>>$LONGX,
> >>>>Environmental_variables$LATY),adapt=TRUE)
> >>>>
> >>>>PET.gauss<-gwr(SPECIES_RI~PET,data=Environmental_variables,
> >>>>coords=cbind(Environmental_variables$LONGX,
> >>>>Environmental_variables$LATY),
> >>>>gweight=gwr.Gauss,adapt=PET.adapt.gauss,hatmatrix=TRUE)
> >>>>
> >>>>1-(PET.gauss$results$rss/crossprod(scale(Environmental_variables
> >>>>$SPECIES_RI,scale=FALSE)))
> >>>>
> >>>>InSAM,Iselecte"spatialWeightingFunction"=gaussian,adaptive
> >>>>SpatialKernel,andcomputeGeographicalDistancesbasedon
> >>>>longitudinal
> >>>>coordinate(X)andlatitudinalcoordinate(Y).Idonotselectmethod
> >>>>for
> >>>>AICoptimisation.
> >>>>
> >>>>SoIdonotknowwhereiswrong.
> >>>>
> >>>>Thankyouverymuchforyourgreathelps.
> >>>>
> >>>>
> >>>>
> >>>>
> >>>>
> >>>>
> >>>>ÔÚ2010-05-1300:07:23£¬"RogerBivand"< roger.biv...@nhh.no>дµÀ£º
> >>>>>OnWed,12May2010,RogerBivandwrote:
> >>>>>
> >>>>>>OnWed,12May2010,huangykizwrote:
> >>>>>>
> >>>>>>>Hi,Is"adapt=TRUE"(spgwr)notthesameas"adaptiveSpatial
> >>>>>>>Kernel"(SAM)?Theresultof"adaptiveSpatialKernel"maybe
> >>>>>>>betterthan
> >>>>>>>fixedbandwidth.IfIwanttoues"adaptiveSpatialKernel"in
> >>>>>>>spgwr,how
> >>>>>>>towritethecode?
> >>>>>>
> >>>>>>READTHEHELPPAGES!
> >>>>>>
> >>>>>>adaptive_proportion<-gwr.sel(...)
> >>>>>>
> >>>>>>result<-gwr(...,adapt=adaptive_proportion;...)
> >>>>>>
> >>>>>>exactlyasontheexampleomthehelppage:
> >>>>>>
> >>>>>>data(georgia)
> >>>>>>g.adapt.gauss<-gwr.sel(PctBach~TotPop90+PctRural+PctEld
> >>>>>>+PctFB+
> >>>>>>PctPov+PctBlack,data=gSRDF,adapt=TRUE)
> >>>>>>res.adpt<-gwr(PctBach~TotPop90+PctRural+PctEld+PctFB+
> >>>>>>PctPov+
> >>>>>>PctBlack,data=gSRDF,adapt=g.adapt.gauss)
> >>>>>>res.adpt
> >>>>>>
> >>>>>>Clear?
> >>>>>
> >>>>>IhavenowcomparedthesamedatainR/spgwrandSAMfor
> >>>>>effectivenumber
> >>>>>ofparameters,sigma,andyourquestionableR^2,andtheyagree
> >>>>>adequately
> >>>>>whenthekernelandthebandwidtharethesame.Havingthe
> >>>>>algorithm
> >>>>>choosethebandwidthdoesobscurewhatisgoingon.Youshould
> >>>>>useSAMif
> >>>>>youpreferGUIandnotneedingtoknowhowthingswork,and
> >>>>>rememberthat
> >>>>>GWRisaverydoubtfulapproachforanythingbeyondexploring
> >>>>>non-stationarity,itsoriginalmotivation.
> >>>>>
> >>>>>>
> >>>>>>>
> >>>>>>>Thanksalot.
> >>>>>>>
> >>>>>>>Cheers.
> >>>>>>>
> >>>>>>>
> >>>>>>>>Hi,
> >>>>>>>>IthinkthatIusethesamebandwidthandkernel.InSAM,I
> >>>>>>>>use"spatial
> >>>>>>>>WeightingFunction"=gaussian,adaptiveSpatialKernel,and
> >>>>>>>>compute
> >>>>>>>>GeographicalDistancesbasedonlongitudinalcoordinate(X)and
> >>>>>>>>latitudinal
> >>>>>>>>coordinate(Y).Inspgwr,gweightisgwr.GaussandadaptisTRUE.
> >>>>>>>>
> >>>>>>>>Forexample,thisismycode:
> >>>>>>>
> >>>>>>>>PET.bw<-gwr.sel(SPECIES_RI~PET,data=variables,
> >>>>>>>>coords=cbind(variables$LONGX,variables$LATY),adapt=TRUE)
> >>>>>>>
> >>>>>>>>PET.gauss<-gwr(SPECIES_RI~PET,data=variables,
> >>>>>>>>coords=cbind(variables$LONGX,variables$LATY),bandwidth=PET.bw,
> >>>>>>>>gweight=gwr.Gauss,adapt=TRUE,hatmatrix=TRUE)
> >>>>>>>
> >>>>>>>SowheredoyoupassPET.bwtothegwr()function?adapt=TRUE
> >>>>>>>willtreat
> >>>>>>>theadaptiveproportionas1,soincludealldatapoints.If
> >>>>>>>youwantto
> >>>>>>>compare,useafixedbandwidthinboth,withnoCVselection.
> >>>>>>>Thenyou
> >>>>>>>comparelikewithlike.
> >>>>>>>
> >>>>>>>Notethatyourmessagesare*not*reachingthelist,theymust
> >>>>>>>besentto:
> >>>>>>>
> >>>>>>>r-sig-geo@stat.math.ethz.ch,not
> >>>>>>>
> >>>>>>>r-sig-geo-requ...@stat.math.ethz.ch
> >>>>>>>
> >>>>>>>Youarenotthinkingcarefullyandarerushingintothingsand
> >>>>>>>drawing
> >>>>>>>wrongconclusions.
> >>>>>>>
> >>>>>>>>
> >>>>>>>>Thanksalot.
> >>>>>>>>
> >>>>>>>>Cheers.
> >>>>>>>>
> >>>>>>>>
> >>>>>>>>
> >>>>>>>>ÔÚ2010-05-1220:28:47£¬ "RogerBivand"<roger.biv...@nhh
> >>>>>>>>.no>дµÀ£º
> >>>>>>>>>OnWed,12May2010,huangykizwrote:
> >>>>>>>>>
> >>>>>>>>>>Hi,
> >>>>>>>>>>OneofSAMauthor("Jos¨¦AlexandreFelizolaDiniz
> >>>>>>>>>>Filho"<di...@icb.ufg.br>)saythattheyalsobaseonGWR3(the
> >>>>>>>>>>Fotherighambook)andthedatausedwithineachkernelmay
> >>>>>>>>>>besome
> >>>>>>>>>>slightdifferences
> >>>>>>>>>
> >>>>>>>>>Naturally,ifyouarenotusingexactlythesamekerneland
> >>>>>>>>>bandwidth,
> >>>>>>>>>youshouldnotbesurprisedbydifferencesinvalues.Please
> >>>>>>>>>makesure
> >>>>>>>>>thatthebandwidthandkernelarethesameandtryagain.
> >>>>>>>>>
> >>>>>>>>>Roger
> >>>>>>>>>
> >>>>>>>>>>Cheers
> >>>>>>>
> >>>>>>>
> >>>>>>>
> >>>>>>>
> >>>>>>>ÔÚ2010-05-1220:28:47£¬"RogerBivand"< roger.biv...@nhh.
> >>>>>>>no>дµÀ£º
> >>>>>>>>OnWed,12May2010,huangykizwrote:
> >>>>>>>>
> >>>>>>>>>Hi,
> >>>>>>>>>OneofSAMauthor("Jos¨¦AlexandreFelizolaDiniz
> >>>>>>>>>Filho"<di...@icb.ufg.br>)saythattheyalsobaseonGWR3(the
> >>>>>>>>>Fotherighambook)andthedatausedwithineachkernelmay
> >>>>>>>>>besome
> >>>>>>>>>slightdifferences
> >>>>>>>>
> >>>>>>>>Naturally,ifyouarenotusingexactlythesamekerneland
> >>>>>>>>bandwidth,you
> >>>>>>>>shouldnotbesurprisedbydifferencesinvalues.Pleasemake
> >>>>>>>>surethat
> >>>>>>>>thebandwidthandkernelarethesameandtryagain.
> >>>>>>>>
> >>>>>>>>Roger
> >>>>>>>>
> >>>>>>>>>Cheers.
> >>>>>>>>>
> >>>>>>>
> >>>>>>>
> >>>>>>>
> >>>>>>>
> >>>>>>>
> >>>>>>>ÔÚ2010-05-1215:27:58£¬"RogerBivand"< roger.biv...@nhh.
> >>>>>>>no>дµÀ£º
> >>>>>>>>OnWed,12May2010,huangykizwrote:
> >>>>>>>>
> >>>>>>>>>Hi,
> >>>>>>>>>
> >>>>>>>>>IamsorryIdonotknowhowtoinstallmodulespgwrfrom
> >>>>>>>>>sourceforge(I
> >>>>>>>>>canfinditontheweb
> >>>>>>>>>http://r-spatial.cvs.sourceforge.net/viewvc/r-spatial/spgwr/R/gwr.R?view=log
> >>>>>>>>>).
> >>>>>>>>>SoIusethecodesketchtocalculatequasi-globalR2.The
> >>>>>>>>>resultsare
> >>>>>>>>>differentbetweenSAMandspgwr(Attachedaretheresults).The
> >>>>>>>>>quasi-globalR2inRis0.4515894,butinSAMis0.696.
> >>>>>>>>>Thisismycode:
> >>>>>>>>>
> >>>>>>>>>library(spgwr)
> >>>>>>>>>Environmental_variables<-read.csv
> >>>>>>>>>("Environmental_variables100.csv",header=TRUE)
> >>>>>>>>>attach(Environmental_variables)
> >>>>>>>>>region_PET.bw<-gwr.sel(SPECIES_RI~PET,
> >>>>>>>>>data=Environmental_variables,
> >>>>>>>>>coords=cbind(Environmental_variables$LONGX,
> >>>>>>>>>Environmental_variables$LATY),adapt=TRUE)
> >>>>>>>>>region_PET.gauss<-gwr(SPECIES_RI~PET,
> >>>>>>>>>data=Environmental_variables,
> >>>>>>>>>coords=cbind(Environmental_variables$LONGX,
> >>>>>>>>>Environmental_variables$LATY),bandwidth=region_PET.bw,
> >>>>>>>>>gweight=gwr.Gauss,adapt=TRUE,hatmatrix=TRUE)
> >>>>>>>>>names(region_PET.gauss$SDF)
> >>>>>>>>>region_PET.gauss$SDF$localR2
> >>>>>>>>>1-
> >>>>>>>>>(region_PET.gauss$results$rss/crossprod(scale
> >>>>>>>>>(Environmental_variables$SPECIES_RI,
> >>>>>>>>>scale=FALSE)))
> >>>>>>>>>
> >>>>>>>>>Thankyouverymuch.
> >>>>>>>>
> >>>>>>>>SAMisclosedsource-askthemhowtheycomputeit.For
> >>>>>>>>spgwr,thecode
> >>>>>>>>isprovided,soyoucanreaditforyourself.Fortherecord,
> >>>>>>>>thecurrent
> >>>>>>>>gwr()codeinspgwrgivesthesamevalueasGWR3,whichis
> >>>>>>>>alsoclosed
> >>>>>>>>source,andwheretheEffectivenumberofparameters(model:
> >>>>>>>>traceS),
> >>>>>>>>Sigma,andResidualsumofsquaresalsoagree.IsupposeSAM
> >>>>>>>>hasa
> >>>>>>>>differentunderstandingofGWRinternalsthantheauthorsof
> >>>>>>>>theGWRbook.
> >>>>>>>>
> >>>>>>>>Onceagain:
> >>>>>>>>
> >>>>>>>>Please*do*writetotheR-sig-geolistratherthantome
> >>>>>>>>directly-
> >>>>>>>>otherscanansweryourquestionaswell,perhapsbetter,and
> >>>>>>>>inamore
> >>>>>>>>timelywaythanIcan.Inaddition,threadsinthelistcanbe
> >>>>>>>>searchedin
> >>>>>>>>thearchives,sootherscanavoidthesameproblemlater.
> >>>>>>>>
> >>>>>>>>Pleasesummarisetothelistifthisresolvestheproblem.
> >>>>>>>>
> >>>>>>>>Roger
> >>>>>>>>
> >>>>>>>>>
> >>>>>>>>>
> >>>>>>>>>
> >>>>>>>>>
> >>>>>>>>>
> >>>>>>>>>ÔÚ2010-05-1201:16:18£¬ "RogerBivand"<roger.biv...@nh
> >>>>>>>>>h.no>дµÀ£º
> >>>>>>>>>>OnWed,12May2010,huangykizwrote:
> >>>>>>>>>>
> >>>>>>>>>>>Hi,Ijustneedoneforglobal,not*each*fitpoint.In
> >>>>>>>>>>>thiscase,how
> >>>>>>>>>>>canIselectordo?WhyinothersoftwaresuchasSAM
> >>>>>>>>>>>(SpatialAnalysis
> >>>>>>>>>>>inMacroecology)justgivesoneR2?
> >>>>>>>>>>
> >>>>>>>>>>Ifyoubelievetheirs,goodluck!TheauthorsoftheGWR
> >>>>>>>>>>bookhavelocal
> >>>>>>>>>>R^2valuesinGWR3andformulaethatarewrongbytheirown
> >>>>>>>>>>admissionin
> >>>>>>>>>>privateemails.ThelocalR2nowagreeswiththeas-yet
> >>>>>>>>>>unreleasedGWR4
> >>>>>>>>>>fromtheGWRauthors.HowSAMcanbe"better",Idon'tknow.
> >>>>>>>>>>Whatyou
> >>>>>>>>>>aresuggestingisthatthemodelfittedwithfitpointsat
> >>>>>>>>>>datapoints
> >>>>>>>>>>(butnotatotherfitpoints)mighthavea"quasi-global"
> >>>>>>>>>>R^2,basedon
> >>>>>>>>>>theRSSofthepooledfit.Forthecolumbuscase,thatmight
> >>>>>>>>>>be:
> >>>>>>>>>>
> >>>>>>>>>>1-(col.gauss$results$rss/crossprod(scale(columbus$crime,
> >>>>>>>>>>scale=FALSE)))
> >>>>>>>>>>
> >>>>>>>>>>butIdon'tknowwhetherthisisinanywaycorrect.I've
> >>>>>>>>>>addeditas:
> >>>>>>>>>>
> >>>>>>>>>>Quasi-globalR2:
> >>>>>>>>>>
> >>>>>>>>>>totheprintoutputofaGWRmodelfittedwithahatmatrix,
> >>>>>>>>>>andhave
> >>>>>>>>>>committedittosourceforge,projectr-spatial,module
> >>>>>>>>>>spgwr.Arguably,
> >>>>>>>>>>itoughttobeadjustedbytheratioofdegreesoffreedom,
> >>>>>>>>>>butIdon't
> >>>>>>>>>>trusttheDFeither.Couldyoupleasecheckoutspgwrfrom
> >>>>>>>>>>sourceforge
> >>>>>>>>>>,installitfromsource,andconfirmthatthe"quasi-global
> >>>>>>>>>>R2"doesthe
> >>>>>>>>>>sameasSAM,orusethecodesketchabovetodothesame,
> >>>>>>>>>>andreport
> >>>>>>>>>>back?
> >>>>>>>>>>
> >>>>>>>>>>Roger
> >>>>>>>>>>
> >>>>>>>>>>>
> >>>>>>>>>>>Thanksalot.
> >>>>>>>>>>>
> >>>>>>>>>>>Cheers,
> >>>>>>>>>>>
> >>>>>>>>>>>
> >>>>>>>>>>>
> >>>>>>>>>>>
> >>>>>>>>>>>
> >>>>>>>>>>>ÔÚ2010-05-1123:59:44£¬ "RogerBivand"<Roger.Bivand@
> >>>>>>>>>>>nhh.no>дµÀ£º
> >>>>>>>>>>>>OnTue,11May2010,huangykizwrote:
> >>>>>>>>>>>>
> >>>>>>>>>>>>>Hi,
> >>>>>>>>>>>>>
> >>>>>>>>>>>>>Thereare49localR2intheresults.WhichonedoI
> >>>>>>>>>>>>>need?Thecode
> >>>>>>>>>>>>>"lookforlocalR2:"cannotrun.
> >>>>>>>>>>>>
> >>>>>>>>>>>>Well,howmanydoyouwant?Thereisoneforeachfit
> >>>>>>>>>>>>point,theyare
> >>>>>>>>>>>>*local*R2.PleasedotrytograspwhatGWRdoes-itfits
> >>>>>>>>>>>>onemoddel
> >>>>>>>>>>>>for*each*fitpoint.
> >>>>>>>>>>>>
> >>>>>>>>>>>>>
> >>>>>>>>>>>>>Thansalot
> >>>>>>>>>>>>>
> >>>>>>>>>>>>>Cheers.
> >>>>>>>>>>>>>
> >>>>>>>>>>>>>
> >>>>>>>>>>>>>
> >>>>>>>>>>>>>
> >>>>>>>>>>>>>
> >>>>>>>>>>>>>ÔÚ2010-05-1122:33: 59£¬"RogerBivand"<Roger.Biv
> >>>>>>>>>>>>>a...@nhh.no>дµÀ£º
> >>>>>>>>>>>>>>OnTue,11May2010,huangykizwrote:
> >>>>>>>>>>>>>>
> >>>>>>>>>>>>>>>Hi,OK.ButIneeditforcompariation.Inwhatsome
> >>>>>>>>>>>>>>>contextsto
> >>>>>>>>>>>>>>>getit?Mayyoutellmehowtogetit?
> >>>>>>>>>>>>>>
> >>>>>>>>>>>>>>library(spgwr)
> >>>>>>>>>>>>>>data(columbus)
> >>>>>>>>>>>>>>col.bw<-gwr.sel(crime~income+housing,data=columbus,
> >>>>>>>>>>>>>>coords=cbind(columbus$x,columbus$y))
> >>>>>>>>>>>>>>col.gauss<-gwr(crime~income+housing,data=columbus,
> >>>>>>>>>>>>>>coords=cbind(columbus$x,columbus$y),bandwidth=col.bw,
> >>>>>>>>>>>>>>hatmatrix=TRUE)
> >>>>>>>>>>>>>>names(col.gauss$SDF)
> >>>>>>>>>>>>>>
> >>>>>>>>>>>>>>lookforlocalR2:
> >>>>>>>>>>>>>>
> >>>>>>>>>>>>>>col.gauss$SDF$localR2
> >>>>>>>>>>>>>>
> >>>>>>>>>>>>>>Butdonotrelyonitoruseitforanythingatall!
> >>>>>>>>>>>>>>LikeallGWR,
> >>>>>>>>>>>>>>itismostunreliable!
> >>>>>>>>>>>>>>
> >>>>>>>>>>>>>>RogerBivand
> >>>>>>>>>>>>>>
> >>>>>>>>>>>>>>>
> >>>>>>>>>>>>>>>Thankyouverymuchforyourgreathelps
> >>>>>>>>>>>>>>>
> >>>>>>>>>>>>>>>Bestregards.
> >>>>>>>>>>>>>>>
> >>>>>>>>>>>>>>>
> >>>>>>>>>>>>>>>
> >>>>>>>>>>>>>>>
> >>>>>>>>>>>>>>>
> >>>>>>>>>>>>>>>ÔÚ2010-05- 1118:28:44£¬"RogerBivand"<Roger
> >>>>>>>>>>>>>>>.biv...@nhh.no> дµÀ£º
> >>>>>>>>>>>>>>>>OnTue,11May2010,huangykizwrote:
> >>>>>>>>>>>>>>>>
> >>>>>>>>>>>>>>>>>DearprofessorBivand,
> >>>>>>>>>>>>>>>>>
> >>>>>>>>>>>>>>>>>Iamastrudent.IrecentlyuseGWR(Geographically
> >>>>>>>>>>>>>>>>>weighted
> >>>>>>>>>>>>>>>>>regression)model.MayIaskyouaquestion?Thereis
> >>>>>>>>>>>>>>>>>not
> >>>>>>>>>>>>>>>>>CoefficientofDeterminationintheresultsofGWR.
> >>>>>>>>>>>>>>>>>HowcanIget
> >>>>>>>>>>>>>>>>>it?Whatistheprogramstogetit?
> >>>>>>>>>>>>>>>>
> >>>>>>>>>>>>>>>>
> >>>>>>>>>>>>>>>>PleaseaddressquestionslikethistotheR-sig-geo
> >>>>>>>>>>>>>>>>listrather
> >>>>>>>>>>>>>>>>thantomedirectlyinfuture.
> >>>>>>>>>>>>>>>>
> >>>>>>>>>>>>>>>>ThelocalR2valuesareavailableinsomecontexts
> >>>>>>>>>>>>>>>>whenrunning
> >>>>>>>>>>>>>>>>gwr(),butarenotwelldefined(neitherintheGWR
> >>>>>>>>>>>>>>>>booknorin
> >>>>>>>>>>>>>>>>implementations).Iadviseagainsttheiruse-they
> >>>>>>>>>>>>>>>>aremost
> >>>>>>>>>>>>>>>>probablymeaningless.
> >>>>>>>>>>>>>>>>
> >>>>>>>>>>>>>>>>Hopethishelps,
> >>>>>>>>>>>>>>>>
> >>>>>>>>>>>>>>>>RogerBivand
> >>>>>>>>>>>>>>>>
> >>>>>>>>>>>>>>>>
> >>>>>>>>>>>>>>>>>
> >>>>>>>>>>>>>>>>>Thankyouverymuchforyouranyhelps.
> >>>>>>>>>>>>>>>>>
> >>>>>>>>>>>>>>>>>Bestregards.
> >>>>>>>>>>>>>>>>>
> >>>>>>>>>>>>>>>>>YongHuang
> >>>>>>>>>>>>>>>>
> >>>>>>>>>>>>>>>>--
> >>>>>>>>>>>>>>>>RogerBivand
> >>>>>>>>>>>>>>>>EconomicGeographySection,DepartmentofEconomics,
> >>>>>>>>>>>>>>>>Norwegian
> >>>>>>>>>>>>>>>>Schoolof
> >>>>>>>>>>>>>>>>EconomicsandBusinessAdministration,Helleveien30,
> >>>>>>>>>>>>>>>>N-5045
> >>>>>>>>>>>>>>>>Bergen,
> >>>>>>>>>>>>>>>>Norway.voice:+4755959355;fax+4755959543
> >>>>>>>>>>>>>>>>e-mail:roger.biv...@nhh.no
> >>>>>>>>>>>>>>>>
> >>>>>>>>>>>>>>
> >>>>>>>>>>>>>>--
> >>>>>>>>>>>>>>RogerBivand
> >>>>>>>>>>>>>>EconomicGeographySection,DepartmentofEconomics,
> >>>>>>>>>>>>>>Norwegian
> >>>>>>>>>>>>>>Schoolof
> >>>>>>>>>>>>>>EconomicsandBusinessAdministration,Helleveien30,
> >>>>>>>>>>>>>>N-5045Bergen,
> >>>>>>>>>>>>>>Norway.voice:+4755959355;fax+4755959543
> >>>>>>>>>>>>>>e-mail:roger.biv...@nhh.no
> >>>>>>>>>>>>
> >>>>>>>>>>>>--
> >>>>>>>>>>>>RogerBivand
> >>>>>>>>>>>>EconomicGeographySection,DepartmentofEconomics,
> >>>>>>>>>>>>NorwegianSchool
> >>>>>>>>>>>>of
> >>>>>>>>>>>>EconomicsandBusinessAdministration,Helleveien30,
> >>>>>>>>>>>>N-5045Bergen,
> >>>>>>>>>>>>Norway.voice:+4755959355;fax+4755959543
> >>>>>>>>>>>>e-mail:roger.biv...@nhh.no
> >>>>>>>>>>
> >>>>>>>>>>--
> >>>>>>>>>>RogerBivand
> >>>>>>>>>>EconomicGeographySection,DepartmentofEconomics,
> >>>>>>>>>>NorwegianSchoolof
> >>>>>>>>>>EconomicsandBusinessAdministration,Helleveien30,N-5045
> >>>>>>>>>>Bergen,
> >>>>>>>>>>Norway.voice:+4755959355;fax+4755959543
> >>>>>>>>>>e-mail:roger.biv...@nhh.no
> >>>>>>>>
> >>>>>>>>--
> >>>>>>>>RogerBivand
> >>>>>>>>EconomicGeographySection,DepartmentofEconomics,Norwegian
> >>>>>>>>Schoolof
> >>>>>>>>EconomicsandBusinessAdministration,Helleveien30,N-5045
> >>>>>>>>Bergen,
> >>>>>>>>Norway.voice:+4755959355;fax+4755959543
> >>>>>>>>e-mail:roger.biv...@nhh.no
> >>>>>>
> >>>>>>
> >>>>>
> >>>>>--
> >>>>>RogerBivand
> >>>>>EconomicGeographySection,DepartmentofEconomics,Norwegian
> >>>>>Schoolof
> >>>>>EconomicsandBusinessAdministration,Helleveien30,N-5045
> >>>>>Bergen,
> >>>>>Norway.voice:+4755959355;fax+4755959543
> >>>>>e-mail:roger.biv...@nhh.no
> >>>
> >>>--
> >>>RogerBivand
> >>>EconomicGeographySection,DepartmentofEconomics,Norwegian
> >>>Schoolof
> >>>EconomicsandBusinessAdministration,Helleveien30,N-5045Bergen,
> >>>Norway.voice:+4755959355;fax+4755959543
> >>>e-mail:roger.biv...@nhh.no
> >>
> >>[[alternativeHTMLversiondeleted]]
> >>
> >>_______________________________________________
> >>R-sig-Geomailinglist
> >>R-sig-Geo@stat.math.ethz.ch
> >>https://stat.ethz.ch/mailman/listinfo/r-sig-geo
>
>
> ------------------------------------------------------------------------
> ÍøÒ×ΪÖÐСÆóÒµÃâ·ÑÌṩÆóÒµÓÊÏ䣨×ÔÖ÷ÓòÃû£© <http://ym.163.com/?from=od3>
--
___________________________________________
Danlin Yu, Ph.D.
Assistant Professor of GIS and Urban Geography
Department of Earth & Environmental Studies
Montclair State University
Montclair, NJ, 07043
Tel: 973-655-4313
Fax: 973-655-4072
email: y...@mail.montclair.edu
webpage: csam.montclair.edu/~yu
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