[R-sig-Geo] Kriging on "srtm" data

[epifanio]

Hi,
i've tryed to delete the  "\" backslash,
now i've a different error, at the same line :

 > grd <- GridTopology(cellcentre.offset=c(G$west+(G$ewres/2), G$south 
+(G$nsres/2)), cellsize=c(G$ewres, G$nsres), cells.dim=c(G$cols, G 
$rows));
Errore in validObject(.Object) : invalid class "GridTopology" object:  
cellsize has incorrect dimension



this is my setting :

 > sessionInfo()
R version 2.4.1 (2006-12-18)
i386-apple-darwin8.8.1
locale:
C
attached base packages:
[1] "stats"     "graphics"  "grDevices" "utils"     "datasets"   
"methods"
[7] "base"
other attached packages:
    gstat  spatial spgrass6    rgdal maptools  foreign       sp
"0.9-35" "7.2-31"  "0.3-4"  "0.5-5"  "0.6-6" "0.8-18"  "0.9-4"
 >

  g.region eboli90 -p
projection: 1 (UTM)
zone:       33
datum:      wgs84
ellipsoid:  wgs84
north:      4506030
south:      4493970
west:       499590
east:       514350
nsres:      90
ewres:      90
rows:       134
cols:       164
cells:      21976

thanks for any help!

regards,
Massimo




Il giorno 20/gen/07, alle ore 12:00, r-sig-geo- 
request at stat.math.ethz.ch ha scritto:

> On Fri, 19 Jan 2007, epifanio wrote:
>
>>          hi i've some problem to do a tutorial on the kriging
>> interpolation
>>          i found instruction on how to interpolate the srtm data to
>> increase the resolution :
>>
>> 	http://grass.itc.it/newsletter/GRASS_OSGeo_News_vol4.pdf
>>
>> 	at page 20 ...  at the line :
>>
>>         grd <- GridTopology(cellcentre.offset=c(G\$west+(G\$ewres/2),
>>         G\$south+(G\$nsres/2)),cellsize=c(G\$ewres, G\
>> $nsres),cells.dim=c(G\$cols, G\$rows));
>>
>
> Perhaps the LaTeX \$ markup which got though into the published  
> version is
> the problem? Try removing the backslashes?
>
>> cars$speed
>  [1]  4  4  7  7  8  9 10 10 10 11 11 12 12 12 12 13 13 13 13 14 14  
> 14 14
> 15 15
> [26] 15 16 16 17 17 17 18 18 18 18 19 19 19 20 20 20 20 20 22 23 24  
> 24 24
> 24 25
>> cars\$speed
> Error: syntax error in "cars\"
>
> Roger
>
>>
>>        i have a sintax error in grid function.
>>
>> i'm missing or wrong something?
>>
>> thanks for any suggestion :-)
>>
>> Massimo.
>>