Click here to see the SAS code. 
Click here to see the example.

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For this map, I started with the US county map, and used 'proc gproject'
to create a subset containing just the rectanglular area I wanted 
(bounded by long/lat that I specified).  I annotated very densely-packed
colored dots behind the map to show the elevation, and I annotated a state
outline around South Carolina.  The clovis points at the top left/right
are annotated images.  Then, most importantly are the bright colored dots
showing where the clovis points have been found -- color-coded by the
origin of the rock used to create the points.

The red dots represent clovis points made from 'chert' from the Allendale
South Carolina area.  The yellow dots represent clovis points made from 
'rhyolite' from the Albemarle (Uwharrie Mountain) area of North Carolina.

One purpose of this map is to determine whether there was trade taking place,
and whether the trade-areas overlapped, or whether distinct/separate territories.


The long/lat coordinates of the clovis points are estimated, based on maps 
provided by Al Goodyear.


Here's how I got the elevation data ...

   http://www.ngdc.noaa.gov/mgg/gdas/gd_designagrid.html
   Your Grid Id: bobsas2
   Grid Database: ETOPO2 - 2-minute global relief
   x - Windows
   Lat/Lon (left defaults - lat(up/down) = 31N -> 37N, lon (across)=84W -> 75W
   Cell size - 2-minute  
   Cell params - (4-byte floating point, tenths of meters precision)
   Format: XYZ (lon,dat,depth), No Header, Space delimited, omit empty grid cells

   Clicked 'Design-A-Grid' button.
   Clicked 'Next-->' button
   Clicked 'Compress and Retrieve' button
   Clicked 'Retrieve' button
   Clicked 'save'
   Saved bobsas2.zip to my U:
   Then, after saving it, I unzipped it, which created a directory structure...
   There's a lot of 'junk', but the file I wanted was ...

      /u/realliso/bobsas2_data/bobsas2/bobsas2.xyz
      (I renamed that to paleo.xyz in the current directory)

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