 |pathcrossingsps71| finds the intersection point(s) of two 
% distinct datasets. 
%
%% Syntax 
% 
%  [lati,loni] = pathcrossingps71(lat1,lon1,lat2,lon2)
%  [lati,loni] = pathcrossingps71(lat1,lon1,lat2,lon2,ClipOption)
% 
%% Description 
% 
% |[lati,loni] = pathcrossingps71(lat1,lon1,lat2,lon2)| returns lat/lon pair(s) 
% for intersection of paths given by lat1,lon1 and lat2,lon2.  
% 
% |[lati,loni] = pathcrossingps71(lat1,lon1,lat2,lon2,ClipOption)| allows
% turning off of automatic data clipping for lar