%%
% Map of the number density of best track genesis points, defined as the
% first point of each track where wind speeds exceed _startv_ , filtered (if
% desired) to include only those events whose winds speeds exceed some
% threshold, _peakv_ as set in the _params.m_ file. The track density is in
% number per year per 1-degree latitude square. The resolution at which the
% density is calculated and other features of the map can be specified in
% the _params.m_ file. 
%
% The best tracks are filtered the same way as the synthetic tracks are,
% and *_gendensitymt.m_ must be run before this script can be applied* .
%
% This version of the script uses MATLAB's mapping toolbox. Various map
% properties can be set in _params.m_ .