Wind barb plotter

Plots wind barbs (in knots) using Matlab's mapping toolbox.

%WINDBARBM Project wind barbs onto map axes
%
% WINDBARBM(lat,lon,u,v) projects two dimensional wind barbs onto the
% current map axes. The vector components (u,v) are in units of knots and
% are specified at the points (lat,lon). It handles winds up to 130 knots.
% Winds exceeding 130 knots will appear as 130 knots.
%
% WINDBARBM(lat,lon,u,v,s) uses the input s to scale the vectors after
% they have been automatically scaled to fit within the grid. If omitted,
% s = 0.9 is assumed.
%
% WINDBARBM(lat,lon,u,v,'PropertyName',PropertyValue,...) and
% WINDBARBM(lat,lon,u,v,s,'PropertyName',PropertyValue,...) uses the
% windbarbm object properties specified to display the windbarb objects.
% The properties supported by windbarbm are the same as the properties
% supported by linem.
%
%
% MFILE: windbarbm.m
% MATLAB: 7.8.0 (R2009a)
% VERSION: 1.3 (28 November 2011)
% AUTHOR: Nick Siler
% CONTACT: [e-mail]