Start with the docs for 'raster' http://cran.r-project.org/web/packages/raster/
specifically pg7 http://cran.r-project.org/web/packages/raster/vignettes/Raster.pdf pg 200 http://cran.r-project.org/web/packages/raster/raster.pdf In R you'll need to install first: install.packages(c('rgdal','raster')) library(raster) Then you can use the commands in the docs. Then if you need help try the R-sig-geo mailing list https://stat.ethz.ch/mailman/listinfo/r-sig-geo On 02/19/2014 02:36 PM, Rob Bowen wrote: > Hi Alex, > > Thanks for the quick response. I am a newbie and will need to get up to > speed on even the basic steps in these programs. > > Rob > > > On Wed, Feb 19, 2014 at 2:26 PM, Alex Mandel > <[email protected]>wrote: > >> More information: >> http://cran.r-project.org/web/packages/raster/vignettes/rasterfile.pdf >> So yes easiest option is to open with R and use the raster package/rgdal >> to save it out to another format that GRASS can read. >> >> >> Maybe we should ask gdal to add the format, seems easy enough and I know >> the author of raster would be fine with it. Anyone on the gdal list want >> to forward the idea. >> >> Thanks, >> Alex >> >> >> On 02/19/2014 06:43 AM, Rainer M Krug wrote: >>> Antonello Lobianco <[email protected]> writes: >>> >>>> I received some data in .grd + .gri format, where the first one is a >> small >>>> text file and the second one (having the same name) is a medium/large >>>> binary file. >>> >>> I don't think you can. This is, as far as I remember, an internal format >>> of the raster package in R to save raster data. >>> You effectively have two options: >>> >>> 1) use R and the raster package to load the data and to save it in a >>> different format >>> >>> 2) ask the person to do it for you >>> >>> Hope this helps, >>> >>> Rainer >>> >>>> >>>> I am unable to open them in grass/qgis (I may have not tried all the >>>> options.. but almost all!). >>>> >>>> Any hint ? Which grid format is it ? Am I missing some library ? I >> tried to >>>> use google but unfortunately "r" word is too small, and it ends to refer >>>> always to the r.* commands in grass... >>>> >>>> This is the content of the .grd file: >>>> >>>> [general] >>>> creator=R package 'raster' >>>> created= 2013-12-14 15:44:30 >>>> [georeference] >>>> nrows= 134 >>>> ncols= 143 >>>> xmin= 56000 >>>> ymin= 1613000 >>>> xmax= 1200000 >>>> ymax= 2685000 >>>> projection= NA >>>> [data] >>>> datatype= FLT8S >>>> byteorder= little >>>> nbands= 5 >>>> bandorder= BIL >>>> minvalue= 0:0:0:0:0 >>>> maxvalue= 0.945:1:1:1:1 >>>> nodatavalue= -1.7e+308 >>>> [legend] >>>> legendtype= >>>> values= >>>> color= >>>> [description] >>>> layername= Value:Twin:Psum:pH:CN >>>> history= >>>> >>>> Thank you, >>>> >>>> Antonello >>> >>> >>> >>> _______________________________________________ >>> grass-user mailing list >>> [email protected] >>> http://lists.osgeo.org/mailman/listinfo/grass-user >>> >> >> _______________________________________________ >> grass-user mailing list >> [email protected] >> http://lists.osgeo.org/mailman/listinfo/grass-user >> > > > _______________________________________________ grass-user mailing list [email protected] http://lists.osgeo.org/mailman/listinfo/grass-user
