TERRAVISION README - Last updated: Mar 28 2002.

                            http://www.tvgeo.com/


REQUIREMENTS:
------------

Irix 6.5 or later to run bin/TerraVision binary.
At least 10MB disk space for installation.

For further instructions on installation, and for future updates, see
the following URL:

   http://www.tvgeo.com/download.shtml


TO INSTALL:
-----------

Find a suitable location for the binaries and corresponding files.
Extract the TerraVision files to this directory, e.g.

1) Uncompress the tar file tv-dist.tar.gz
   i.e. gunzip tv-dist.tar.gz
   This should generate a file called tv-dist.tar

2) Extract the TerraVision distribution
   i.e. tar -xvf tv-dist.tar
   This should create a directory called "TerraVision"


TO START UP TERRAVISION:
------------------------

1) Update your login script (e.g. .cshrc for csh) and add a TVHOME
   environment variable that points to the TerraVision directory, e.g.

     # csh script to setup environment for TerraVision
     setenv TVHOME /homedir/TerraVision
     set path = ($path $TVHOME/bin)

2) source your login script (e.g. "source .cshrc")

3) To run the Tcl/Tk TerraVision interface type, TerraVision

   (N.B. TerraVision is a shell script that runs the binary TclTV)


For help on using TerraVision, please refer to the User Guide at:

   http://www.tvgeo.com/user_guide/


VIEWING A SAMPLE DATASET:
-------------------------

There is a sample Database file included in the distribution as
TerraVision/etc/sample_database.xml. This contains a snapshot of
all terrain datasets available at the SRI web server. To try any
of these, go to "File/Open Terrain", then enter in the the full
pathname for the sample_database.xml file in the Database text widget
and press RETURN. You should see a list of datasets. Click on one
and then click on "Open Dataset".

N.B. if the database file is out of date, you can update it with
the latest list of datasets on the SRI web server by going to the
"File/Open Terrain/Options" button and clicking on "Re-read All"


ASSISTANCE:
-----------

If you need assistance, email:

Martin Reddy at reddy@si.sri.com