This repository contains optional netCDF files to use instead of the Digital Chart of the World DCW
The best way to make use these files is to place them in the same directory as the default dcw-gmt.nc, which is normally located at .../share/dcw.
Then, on a GMT version > 6.5.0, we use it via the +f modifier of the -E coast option. For example, -EIT+fODS will use the Italy polygons
contained in the ODS.nc file (data from opendatasoft). However,
user may select to put these files eleswhere but then the -f modifier usage must include data's full file name (whitout the .nc extension).
Currently we have available the ODS World Administrative Boundaries, NE10m and NE110m from Natural Earth that can be downloaded from GitHub releases