On Thu, Jul 12, 2007 at 12:50:57PM +0200, Matteo Dall'Amico
wrote:
> Hi Markus,
> I own a MacBookPro with Intel processor and I am
running Mac OSX version
> 10.4.10.
> I have installed GRASS 6.2.1 and R 2.5.1.
> I have tried all yesterday to read the raster DTM
without success.
> This is what I get:
>
> >trent.int<-readRAST6("DTM_integer")
> Creating BIL support files ...
> Header File =
>
/Users/Matteo/Documents/DataGrass/GBovest/Permafrost/.tmp/ni
lo.ing.unitn.it/DTM_integer.hdr
> World File =
>
/Users/Matteo/Documents/DataGrass/GBovest/Permafrost/.tmp/ni
lo.ing.unitn.it/DTM_integer.wld
> Exporting Raster as integer values (bytes=2)
> Using the Current Region settings ...
> north=5158000.000000
> south=5058500.000000
> east=1729700.000000
> west=1611600.000000
> r=995
> c=1181
>
> Percent complete: 100%
> r.out.bin complete.
>
> > summary(trent.int)
> Object of class SpatialGridDataFrame
> Coordinates:
> min max
> coords.x1 1611600 1729700
> coords.x2 5058500 5158000
> Is projected: TRUE
> proj4string :
> [+proj=tmerc +lat_0=0.0000000000 +lon_0=9.0000000000
+k_0=0.9996000000
> +x_0=1500000.0000000000 +y_0=0.0000000000 +a=6378388
+rf=297 +no_defs
> +towgs84=-225.000,-65.000,9.000]
> Number of points: 2
> Grid attributes:
> cellcentre.offset cellsize cells.dim
> 1 1611650 100 1181
> 2 5058550 100 995
> Data attributes:
> DTM_integer
> Min. :-32768
> 1st Qu.: -3624
> Median : -3624
> Mean : -1991
> 3rd Qu.: 1028
> Max. : 32525
>
> > print(trent.int data[100000:100150,])
> [1] -3624 -3624 -3624 -3624 -3624 -3624 -3624
-3624 -3624 -3624
> [11] -3624 -3624 -3624 -3624 -3624 -3624 -3624
-3624 -3624 -3624
> [21] -3624 -3624 -3624 -3624 -3624 -3624 -3624
-3624 -3624 -3624
> [31] -3624 -3624 -3624 -3624 -3624 -3624 -3624
-3624 -3624 -3624
> [41] -3624 -3624 -3624 -3624 -3624 -3624 -3624
-3624 -3624 -3624
> [51] -3624 -3624 -3624 -3624 -3624 -3624 -3624
-3624 -3624 -3624
> [61] -3624 -3624 -3624 -3624 -3624 -3624 -3624
-3624 -3624 -3624
> [71] -3624 -3624 -3624 -3624 -3624 -3624 -3624
-3624 -3624 -3624
> [81] -3624 -3624 -3624 -3624 -3624 -3624 -3624
-3624 -3624 -3624
> [91] -3624 -3624 -3624 -3624 -3624 -3624 -3624
-3624 -3624 -3624
> [101] -3624 -3624 -3624 -3624 -19703 12298 22794
2058 -8951 -17911
> [111] -27895 29961 27401 -32759 -25079 -13815 15370
25354 30986 -30710
> [121] -15094 6923 -758 -7670 -17654 -22518 -20214
-30710 21258 10506
> [131] 17930 -28150 -26102 28938 23818 -247 26889
-31991 -15607 10761
> [141] -4856 -18936 28936 14088 -4857 -21241 9223
-11002 -17658 -9722
> [151] 5639
>
> As you can see, it doesn't distinguish the NODATA:
instead of -9999 it uses
> -3624.
> Also in summary there is no notice of the NODATA.
>
> I downloaded all the packages and then, from the
terminal, I installed them
> using:
>
> R CMD INSTALL name_of_package
I would update like this:
http://grass.itc.it/statsgrass/grass6_r_install.html
# you need to be connected to the Internet to use these
commands:
install.packages(c("sp","spgrass6","
;rgdal","maptools"), dependencies=TRUE)
> I really think there are problems with my spgrass6
package and MacOS
> system.
> Any idea?
Could you try a more recent GRASS?
htt
p://www.kyngchaos.com/software/unixport/grass/
Markus
> Thanks,
> Matteo
>
> On 12 Jul 2007, at 11:08, Markus Neteler wrote:
>
>>
>> hi Matteo,
>>
>> I have just made a test on a fresh installed
machine with latest R
>> and sp* packages using a synthetic DEM (still don't
have a real
>> DEM on this computer):
>>
>> GRASS 6.3.cvs (bellunoOvest):~ > r.surf.fractal
dem
>> Steps=1
>> Preliminary surface calculations.
>> Calculating surface 1 (of 1)
>> GRASS 6.3.cvs (bellunoOvest):~ > R
>>
>> R version 2.5.1 (2007-06-27)
>> ...
>>> trentino.grid<-readRAST6("dem")
>> Error: could not find function
"readRAST6"
>>> library(spgrass6)
>> Loading required package: sp
>> Loading required package: maptools
>> Loading required package: foreign
>> Loading required package: rgdal
>> Geospatial Data Abstraction Library extensions to R
successfully loaded
>>
>>> trentino.grid<-readRAST6("dem")
>> Creating BIL support files ...
>> Header File =
>>
/home/neteler/grassdata/bellunoOvest/PERMANENT/.tmp/localhos
t/dem.hdr
>> World File =
>>
/home/neteler/grassdata/bellunoOvest/PERMANENT/.tmp/localhos
t/dem.wld
>> Exporting Raster as double values(bytes=8)
>> Using the Current Region settings ...
>> north=5175700.000000
>> south=5084600.000000
>> east=1787600.000000
>> west=1706300.000000
>> r=911
>> c=813
>> 100%
>>
>>> summary(trentino.grid)
>> Object of class SpatialGridDataFrame
>> Coordinates:
>> min max
>> coords.x1 1706300 1787600
>> coords.x2 5084600 5175700
>> Is projected: TRUE
>> proj4string :
>> [+proj=tmerc +lat_0=0 +lon_0=9 +k=0.999600
+x_0=1500000 +y_0=0 +no_defs
>> +a=6378388 +rf=297 +towgs84=-225.000,-65.000,9.000
+to_meter=1]
>> Number of points: 2
>> Grid attributes:
>> cellcentre.offset cellsize cells.dim
>> 1 1706350 100 813
>> 2 5084650 100 911
>> Data attributes:
>> dem
>> Min. :-604.82
>> 1st Qu.:-289.55
>> Median : 49.31
>> Mean : 23.07
>> 3rd Qu.: 334.70
>> Max. : 669.46
>>
>>> system("r.info -r dem")
>> min=-604.821087
>> max=669.457656
>>
>>> system("r.info -t dem")
>> datatype=DCELL
>>
>> Looks all functional. I am using 6.3, though. Do
you use a 64bit machine
>> (like me)? Probably there were 64bit fixes after
GRASS 6.2.1, I don't
>> remember in this moment.
>>
>> Did you run
>> update.packages()
>> for your R installation?
>>
>> ciao
>> Markus
>>
>> --
>> View this message in context:
>> http://www.nabble.com/import-DTM-w
ith-readRAST6%28%29-tf4049321.html#a11556201
>> Sent from the Grass - Stats mailing list archive at
Nabble.com.
>>
>> _______________________________________________
>> statsgrass mailing list
>> statsgrassgrass.itc.it
>> http:
//grass.itc.it/mailman/listinfo/statsgrass
>>
>
--
Markus Neteler <neteler itc it> http://mpa.itc.it/markus/
FBK-irst - Centro per la Ricerca Scientifica e Tecnologica
MPBA - Predictive Models for Biol. & Environ. Data
Analysis
Via Sommarive, 18 - 38050 Povo (Trento), Italy
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