Software

The following versions of each application used in this project were downloaded and installed on the Mac OS X operating system

• R(2.9.1)

Installing this application requires you to double-click the .mpkg file in the disk image and follow the on-screen instructions. Once that is done you can open R from its install location

• Grass(6.4 RC5-3)

Note:You can select the version of Grass to match your version of OS X. Grass requires you to double-click the .pkg file and follow the on-screen instructions

• QGIS(1.1.0-3)
• Google Earth(5.0)

Google Earth requires you to drag the application icon to the Applications folder Note: Clicking on the link will begin the download process

GRASS/R Interface

This section covers how to first download and then install the necessary frameworks and packages for the GRASS/R interface.

Frameworks

• GEOS
• PROJ
• SQLite
• UnixImageIO
• GDAL

Installing these frameworks involves double-clicking the .mpkg file in the disk image and following the on-screen instructions. These frameworks were installed in the order they appear from top to bottom.

Packages

• rgdal
  • Once the zip file has been downloaded, open R Preferences
  • Go to the Startup Pane and select Add ~/Library/R... under Default Library Paths
  • Under the Packages & Data menu, open the Packages Installer
  • Select At User Level at the bottom of the window as well as install dependencies on the bottom right hand corner
  • Select Get List and choose your mirror site
  • Scroll down the page, find the package sp, and download/install it
  • Go back up to the drop down menu under Packages Repository and select Local Source Package
  • Select Install All, find the folder where you saved your downloaded file
  • Select the .tgz file and hit open
  • The package should run a script in R and will be installed once that is done
• spgrass6
  • Open R
  • Run the command:

install.packages("spgrass6", type="source", dependencies=TRUE)

• • The packaged should run a script in R and will be installed once that is done

R can now be run within OpenOSX Grass by typing R in the terminal once Grass is open.