function LEM_show_path(airways,path,s, linewidth)
% LEM_show_path - display a flight path (of lane vertexes)
% On input:
%     airways (airways struct): airways info
%     path (1xn vector): list of lane vertex indexes
%     s (string): color of path (e.g., 'k')
%     linewidth (float): line width
% On output:
%     <displays a figure with no clf>
% Call:
%     LEM_show_path(airways1,path,'b', 3);
% Author:
%     T. Henderson
%     UU
%     Fall 2020
%

lanes = LEM_vertexes2lanes(airways,path);
num_lanes = length(lanes);
alanes = airways.lanes;
hold on

for k = 1:num_lanes
    index = lanes(k);
    plot3([alanes(index,1),alanes(index,4)],...
        [alanes(index,2),alanes(index,5)],...
        [alanes(index,3),alanes(index,6)],s, 'linewidth', linewidth);
end