Mapping

Coastlines and Bathymetry
M_Map includes two fairly simple databases for coastlines and global
elevation data. Highly-detailed databases are not included in this release
because they are a) extremely large and b) extremely time-consuming to
process (loops are inherently involved).
Coastline options
M_Map includes a 1/4 degree resolution coastline database. This is suitable
for maps covering large portions of the globe, but is noticeably coarse for
many large-scale applications
The M_Map database is accessed using the m_coast function. Coastlines can
be drawn as simple lines, using:
m_coast('line', ...optional line arguments );
or
m_coast( optional line arguments );
where the optional arguments are all the standard arguments for specifying
line style, width, color, etc