README for csamerica_imagep_1 file.
Jun 16, 2003

This file is an update for Central and South America Global GIS
volumes released in 2001. This corrects the Image Point
database, which contains the information for Elevation,
Population, Lights at Night, NDVI, and Landcover image values.

For information on the datasets used to create this derivative
point file please visit:
http://www.agiweb.org/pubs/globalgis/datasets.html or
http://webgis.wr.usgs.gov/globalgis/datasets.htm
   -Shaded Relief link for Elevation (Gtopo30)
   -Population link
   -Lights at Night link
   -NDVI (Greenness) link
   -Landcover link

Installation:
-------------
You can only update the files if the data is installed to 
your hard drive. Copy this file to the directory:
harddrive:\csameric\data\database\mapbase\l_images

Using winzip or other zip software, uncompress the contents
of the zip file overwriting the existing files.

If you have any questions please send email.

Thanks to Nikalas Holmgren for reporting the error.

Trent Hare
USGS
thare@usgs.gov