%%
% This graph displays either the annual exceedence frequency or the
% frequency density per velocity bin according to the parameter _histf_ as
% set in the _params.m_ file. The velocity used depends on the value of
% _htype_ in the _params_ file and the type of event set. The default value
% of 2 gives the maximum winds of each event within the specified distance
% of the point of interest, for a circular filter, or at the point that
% events cross over line segments for poly filters. (The "maximum winds" in
% this case are the maximum winds anywhere in the storm at the point it
% crosses one of the line segments in poly.) The value 1 gives the lifetime
% maximum wind for all events in the set, and the value of 3 gives the
% maximum wind at the point of interest when a circular filter is used.
% (For poly filters, choice 3 is the same as choice 2). Under the entry
% _Histograms and return period plots_ in the _params_ file, other aspects of
% the graph and data can be set including the range of best-track years to
% use, the range of wind speeds to consider, and the width of the wind
% speed bins.