GRASS Short Course 2003/Install notes session 6

1. R-stats installed, and
2. PostgreSQL
3. unixODBC interface (see below)

• become 'root' user
• if needed, set HTTP Proxy, for example:

   export http_proxy="http://proxywww.itc.it:80"

• Now start 'R'. To install the required standard libraries, run inside R (with internet connection established):

            options(CRAN ="http://cran.us.r-project.org")
            install.packages("GRASS")
            install.packages("akima")
            install.packages("sgeostat")
            install.packages("spatial")
            install.packages("grid")
            install.packages("lattice")
            install.packages("modreg")
  

• To verify the successfull installation of the GRASS/R interface, run a simple example:

            library(GRASS)
            example(contour.G)
            q() 
  

• Rdbi: Then we need the new Rdbi interface to connect R and PostgreSQL. Since 10/2003 there is a new Rdbi/PostgreSQL interface for R-stats, available from the 'BioConductor' project (but not the old SourceForge version!):
  • Rdbi (Rdbi 1.0.1 is buggy!)
    (better: get our updated version) and
  • RdbiPgSQL (RdbiPgSQL 1.0.1 also buggy)
    (better: get our updated version).
  Hopefully soon the BioConductor version contains our fixes (should be Rdbi 1.0.2 or later)...

  Interface installation (shell terminal):

  R CMD INSTALL Rdbi_1.0.1b.tar.gz
  R CMD INSTALL RdbiPgSQL_1.0.1b.tar.gz
  

  Note: The RODBC interface in an alternative, but the data transfer is rather slow.