R statistics: Difference between revisions
Jump to navigation
Jump to search
(order from chaos) |
(→See also: RPy) |
||
| Line 47: | Line 47: | ||
* [http://r-spatial.sourceforge.net/ Spatial data in R] (<code>sp</code>) is a '''''R''''' library that provides classes and methods for spatial data (points, lines, polygons, grids), and to new or existing spatial statistics '''''R''''' packages that use sp, depend on sp, or will become dependent on <code>sp</code>, such as <code>maptools</code>, <code>rgdal</code>, <code>splancs</code>, '''<code>spgrass6</code>''', <code>gstat</code>, <code>spgwr</code> and many others. | * [http://r-spatial.sourceforge.net/ Spatial data in R] (<code>sp</code>) is a '''''R''''' library that provides classes and methods for spatial data (points, lines, polygons, grids), and to new or existing spatial statistics '''''R''''' packages that use sp, depend on sp, or will become dependent on <code>sp</code>, such as <code>maptools</code>, <code>rgdal</code>, <code>splancs</code>, '''<code>spgrass6</code>''', <code>gstat</code>, <code>spgwr</code> and many others. | ||
* [http://rpy.sourceforge.net/ RPy] - Python interface to the R Programming Language | |||
=== Articles === | === Articles === | ||
Revision as of 02:02, 9 December 2007
Q: How do I enjoy high quality statistic analysis in GRASS?
A: Well, GRASS has got an interface to the most powerful statistics analysis package around: R (http://www.r-project.org)
First of all you need to add R to your system, the R version must be >= 1.9.1:
- Debian GNU/Linux user, see: http://cran.r-project.org/bin/linux/debian/README
- Ubuntu Linux see: http://cran.r-project.org/bin/linux/ubuntu/README
- RedHat, Suse, Mandrake and similar distros: take the latest R RPM and install it
Once you have R in your system, take a look at http://grass.itc.it/statsgrass/grass_r_install.html.
Quick start
For the impatient just start it:
> R
#and install packages directly from the net
pkgs <- c('akima', 'spgrass6', 'RODBC', 'VR')
install.packages(pkgs, dependencies=TRUE, type='source')
Notes
- All the necessary functions for the GRASS 6 interface are now in packages on CRAN, so that on Linux/Unix (or Mac OSX) installing rgdal from source with PROJ4 and GDAL installed, or Windows installing from binary, the required packages are: sp; maptools (now includes spmaptools); rgdal (now includes spGDAL, spproj); spgrass6 - now all on CRAN.
See also
- Using GRASS and R: http://grass.itc.it/statsgrass/grass_r_interface.html
- Connecting R to RDBMS: http://grass.itc.it/statsgrass/r_and_dbms.html
- R-Statistics homepage http://www.r-project.org
- R Spatial Projects http://sal.uiuc.edu/csiss/Rgeo//
- Neural Networks with GRASS and R (posted by Markus Neteler on the grass-user mailing list) http://www.uam.es/proyectosinv/Mclim/pdf/MBenito_EcoMod.pdf
- Using R and GRASS with cygwin: It is possible to use Rterm inside the GRASS shell in cygwin, just as in Unix/Linux or OSX. You should not, however, start Rterm from a cygwin xterm, because Rterm is not expecting to be run in an xterm under Windows, and loses its input. If you use the regular cygwin bash shell, but need to start display windows, start X from within GRASS with startx &, and then start Rterm in the same cygwin shell, not in the xterm.
- Spatial data in R (
sp) is a R library that provides classes and methods for spatial data (points, lines, polygons, grids), and to new or existing spatial statistics R packages that use sp, depend on sp, or will become dependent onsp, such asmaptools,rgdal,splancs,spgrass6,gstat,spgwrand many others.
- RPy - Python interface to the R Programming Language
Articles
- GRASS News vol.3, June 2005 (R. Bivand. Interfacing GRASS 6 and R. GRASS Newsletter, 3:11-16, June 2005. ISSN 1614-8746).
- OSGeo Journal vol. 1 May 2007 (R. Bivand. Using the R— GRASS interface. OSGeo Journal, 1:31-33, May 2007. ISSN 1614-8746).