[R-sig-Geo] Use estimateAnisotropy by intamap package

Edzer Pebesma edzer.pebesma at uni-muenster.de
Sun Apr 18 13:28:58 CEST 2010


An example, building on example(estimateAnisotropy), is:

library(intamap)
data(sic2004)
coordinates(sic.val)=~x+y
estimateAnisotropy(sic.val,formulaString=joker~1)

I'd agree that "formula" would have been a better name for the third
parameter than "formulaString", as a string is not allowed here (this
matches the docs, btw). For your convenience,

estimateAnisotropy(sic.val,formula=joker~1)

also works, by R's partial matching of argument names.
--
Edzer

Yong Li wrote:
> Dear All,
> 
> I tried to inspect the geometric anisotropy by using the function of estimateAnisotropy with parameter "formulaString" in intamap, but never worked.
> Any help will be highly appreciated. 
> 
> Cheers,
> 
> Yong
> 
> 
> -----Original Message-----
> From: r-sig-geo-bounces at stat.math.ethz.ch 代表 r-sig-geo-request at stat.math.ethz.ch
> Sent: 2010-4-18 (星期日) 20:00
> To: r-sig-geo at stat.math.ethz.ch
> Subject: R-sig-Geo Digest, Vol 80, Issue 18
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> Today's Topics:
> 
>    1. Variogram models in gstat (Sidney Bernal)
>    2. Re: Variogram models in gstat (Edzer Pebesma)
>    3. Re: sp, area and SpatialPolygons (Roger Bivand)
>    4. Re: Help needed with spplot (Thomas Adams)
>    5. Re: sp, area and SpatialPolygons (Patrick Giraudoux)
> 
> 
> ----------------------------------------------------------------------
> 
> Message: 1
> Date: Sat, 17 Apr 2010 10:37:15 -0500
> From: Sidney Bernal <sidney86_115 at hotmail.com>
> To: <r-sig-geo at stat.math.ethz.ch>, Sidney Bernal
> 	<sidney86_115 at hotmail.com>
> Subject: [R-sig-Geo] Variogram models in gstat
> Message-ID: <SNT117-W61894D6D8AA733D868DD48A70D0 at phx.gbl>
> Content-Type: text/plain
> 
> 
> 
> 
> Good Morning
> 
> Today I make a geostatistics course, so I'm using R 2.10.1 and I am writing to ask the please of the mathematical formulas of the 19 models of covariogram variogram programmed in the gstat package.
> 
>    short                                      long
> 1    Nug                              Nug (nugget)
> 2    Exp                         Exp (exponential)
> 3    Sph                           Sph (spherical)
> 4    Gau                            Gau (gaussian)
> 5    Exc               Exclass (Exponential class)
> 6    Mat                              Mat (Matern)
> 7    Ste Mat (Matern, M. Stein's parameterization)
> 8    Cir                            Cir (circular)
> 9    Lin                              Lin (linear)
> 10   Bes                              Bes (bessel)
> 11   Pen                      Pen (pentaspherical)
> 12   Per                            Per (periodic)
> 13   Hol                                Hol (hole)
> 14   Log                         Log (logarithmic)
> 15   Pow                               Pow (power)
> 16   Spl                              Spl (spline)
> 17   Leg                            Leg (Legendre)
> 18   Err                   Err (Measurement error)
> 19   Int                           Int (Intercept)
> 
> Awaiting your prompt response.
> 
> Sidney Bernal
> sidney86_115 at hotmail.com
> 
> 
> 
> Sidney Bernal
> 
>  		 	   		  
> _________________________________________________________________
> 
> 
> e=wlmailtagline
> 	[[alternative HTML version deleted]]
> 
> 
> 
> ------------------------------
> 
> Message: 2
> Date: Sat, 17 Apr 2010 18:47:43 +0200
> From: Edzer Pebesma <edzer.pebesma at uni-muenster.de>
> To: Sidney Bernal <sidney86_115 at hotmail.com>
> Cc: r-sig-geo at stat.math.ethz.ch
> Subject: Re: [R-sig-Geo] Variogram models in gstat
> Message-ID: <4BC9E62F.1090607 at uni-muenster.de>
> Content-Type: text/plain; charset=ISO-8859-1
> 
> Most of them can be found on page 38 of http://www.gstat.org/gstat.pdf
> 
> The Mat / Ste models are e.g. described in M. Stein, "Interpolation of
> Spatial Data: Some Theory for Kriging", Springer.
> 
> Let me know if there are further descriptions missing.
> --
> Edzer
> 
> Sidney Bernal wrote:
>>  
>> Good Morning
>>
>> Today I make a geostatistics course, so I'm using R 2.10.1 and I am writing to ask the please of the mathematical formulas of the 19 models of covariogram variogram programmed in the gstat package.
>>  
>>    short                                      long
>> 1    Nug                              Nug (nugget)
>> 2    Exp                         Exp (exponential)
>> 3    Sph                           Sph (spherical)
>> 4    Gau                            Gau (gaussian)
>> 5    Exc               Exclass (Exponential class)
>> 6    Mat                              Mat (Matern)
>> 7    Ste Mat (Matern, M. Stein's parameterization)
>> 8    Cir                            Cir (circular)
>> 9    Lin                              Lin (linear)
>> 10   Bes                              Bes (bessel)
>> 11   Pen                      Pen (pentaspherical)
>> 12   Per                            Per (periodic)
>> 13   Hol                                Hol (hole)
>> 14   Log                         Log (logarithmic)
>> 15   Pow                               Pow (power)
>> 16   Spl                              Spl (spline)
>> 17   Leg                            Leg (Legendre)
>> 18   Err                   Err (Measurement error)
>> 19   Int                           Int (Intercept)
>>  
>> Awaiting your prompt response.
>>  
>> Sidney Bernal
>> sidney86_115 at hotmail.com
>>
>>  
>>  
>> Sidney Bernal
>>
>>  		 	   		  
>> _________________________________________________________________
>>
>>
>> e=wlmailtagline
>> 	[[alternative HTML version deleted]]
>>
>> _______________________________________________
>> R-sig-Geo mailing list
>> R-sig-Geo at stat.math.ethz.ch
>> https://stat.ethz.ch/mailman/listinfo/r-sig-geo
> 
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-- 
Edzer Pebesma
Institute for Geoinformatics (ifgi), University of Münster
Weseler Stra?e 253, 48151 Münster, Germany. Phone: +49 251
8333081, Fax: +49 251 8339763  http://ifgi.uni-muenster.de
http://www.52north.org/geostatistics      e.pebesma at wwu.de



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