Installation of LUCAS

  First GRASS must be installed on the local UNIX system. GRASS 4.1 is freely available from USACERL via anonymous FTP at
ftp://moon.cecer.army.mil/lucas/grass4.1. Information about GRASS, the GRASS User's Reference Manual and an installation guide can be found at URL http://www.cecer.army.mil/lucas/ on the World Wide Web. If LUCAS is to be compiled, the Motif Developer's Library version 1.2 or later, GNU g++ version 2.5.8 or later (or equivalent C++ compiler) must be installed on the system.

Once GRASS and LUCAS have been installed and the LUCAS mapsets have been placed in the GRASS database, the user will need to follow the following procedure:

1. Set the UNIX environment variable GISBASE to the path leading up to the GRASS directory, e.g., in the user's $HOME/.cshrc file:
   setenv GISBASE /coral/homes/lucas/gis.
2. Set the UNIX environment variable GISDBASE to the path leading up to the GRASS database, e.g., in the user's $HOME/.cshrc file
   setenv GISDBASE /coral/homes/lucas/data.
3. Set the UNIX environment variable GISRC to point to the user's GRASS resource file also in $HOME/.cshrc. This file is usually $HOME/.grassrc.
4.   Run the grass4.1 shell. Set the name of the location, mapset, and database path name.
5. From within the GRASS shell, run g.region to set the current region for the mapset. Select the ``Set from a raster map'' option and choose the map for the appropriate location:
   

6.   Exit the GRASS shell.
7. Run lucas to start the GUI.

Steps iv--vi should be repeated for each location.