Misc ancillary dataset files
 
 ciaworld000.dat [64MB] (lons 0..360)
 ciaworld180.dat [64MB] (lons -180..180) 
   ASCII file containing list of (lat,lon,pen,Code) values
   that describe world coastlines and rives.  The data
   convention is the conceptal plotting of a pen with the pen
   "down" from the previous point to the current point when
   pen=2, and moving the pen with the pen up when pen=3.

   Code  General Type
     1    Coasts          
     2    Add Major island
     3    Intermed islands
     4    Minor islands   
     5    Double-line Rivers 
     6    Intermit major lake
     7    Intermit minor lake
     8    Reefs           
     9    Major Salt pans 
    10    Minor Salt pans 
    11    Lessor Canals   
    13    Major Ice Shelve
    14    Minor Ice Shelve
    15    Glaciers               

 The coast and river outline is from the 1987 CIA world database
  https://www.evl.uic.edu/pape/data/WDB/
 A Matlab script to plot the data is given in plot_ciaworld.m


WorldLandBitMapBE.dat [81MB] (big endian 32 bit integer format)
WorldLandBitMapLE.dat [81MB] (little endian 32 bit integer format)
 Binary bitmap file with a 0.01 deg x 0.01 deg map of land (=0)
 and water (=1). File was created from CIA world coastline database
 by plotting coastlines into 0.01 deg x 0.01 deg binary array.
 Adobe Photoshop was then used to "fill" enclosed land areas. The
 bit map was then written as 32 bit integers in row major order.
 A Matlab script to plot the data is given in plot_WorldLandBitMap.m

WorldLandDistMap.dat [648MB] (unsigned 8 bit bytes)
 Byte map of the world containing the distance (in km truncated to
 255 km) of a given water location. Land is 0. This map is derived
 from the WorldLandBitMapLE.dat map using an exhaustive search of
 the nearest pixel containing land. The map is at 0.01 deg x 0.01 deg
 resolution.
 A Matlab script to plot the data is given in plot_WordlLandDistMap.m