DCW-GMT for Debian ------------------- The gmt-dcw Debian package includes the DCW-GMT basemap of the world in NetCDF 4 format for use with GMT 5. The DCW-GMT homepage [1] describes the project and the origin of the data as follows: " The Digital Chart of the World (DCW) is a comprehensive 1:1,000,000 scale vector basemap of the world. The charts were designed to meet the needs of pilots and air crews in medium-and low-altitude en route navigation and to support military operational planning, intelligence briefings, and other needs. For basic background information about DCW, see the Wikipedia entry (http://en.wikipedia.org/wiki/Digital_Chart_of_the_World). DCW-GMT is an enhancement to DCW in a few ways: (1) it contains more state boundaries (the largest 8 countries are now represented), and (2) the data have been reformatted to save space and are distributed as a single deflated netCDF-4 file. The raw files used to build dcw-gmt.nc came from the Princeton University Digital Map and Geospatial Information Center, accessible via website http://www.princeton.edu/~geolib/gis/dcw.html; however, the DCW access seems to have disappeared. Other sites with DCW data include the GeoCommunity at http://data.geocomm.com/readme/dcw/dcw.html. " [1] http://www.soest.hawaii.edu/pwessel/dcw/index.html -- Bas Couwenberg Fri, 19 Jun 2015 01:33:15 +0200