0.2 degree grid, then lowpass filter to 6
% degrees (using the |filt2| function in the Climate Data Toolbox)
% and interpolate. So we might end up with a little bit of noise,
% but let's not be pedants.
% # Matlab's |text| function doesn't allow bordered text, so below I create
% eight white text objects, each offset by some combination of 0.3 degrees
% in longitude or 0.15 degrees in latitude. The end result produces the
% appearance of outlined text. 
% 
%  % Model filename: 
%  fn = 'TPXO9_atlas_v5.nc'; 