>Plot high-density stippling where topography is above sea level. To do this, we'll use <a href="cdtgrid_documentation.html"><tt>cdtgrid</tt></a> to create a 1-degree global grid, and <a href="island_documentation.html"><tt>island</tt></a> to determine which of those grid cells corresponds to land:</p><pre class="codeinput">[lat,lon] = cdtgrid;
mask = island(lat,lon);

figure
globestipple(lat,lon,mask,<span class="string">'density'</span>,300)
axis <span class="string">tight</span>

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