i want to get contour and wind vector code

This is a contour code. I would like to add this code to indicate the flow of the wind with a wind speed of 12 and a wind direction of 270 degrees. If possible, I would like to add the code contents using quiver, can you help me?

load_data = load('hs.mat');

data = struct2cell(load_data);

minwh=0.0;

maxwh=10.0;

t_start = datenum(2016,12,01,00,00,00);

t_step = datenum(00,00,00,01,00,00);

t_end = datenum(2016,12,02,00,00,00);

travel_time = ( t_start : t_step : t_end );

[X,Y] = meshgrid(linspace(126.85,142.15,101),linspace(35.05,48.1,86));

for i=1:length(travel_time)

DN(i) = {datestr(travel_time(i),31)};

WH_SWAN = data{i};

WH_SWAN = double(flipud(WH_SWAN));

figure(i);

[c h]=contourf(X,Y,WH_SWAN);

clabel(c,h,'fontsize',15,'labelspacing',300);

title([DN(i)],'fontsize',25);

grid on; hold on; axis tight;

caxis([minwh maxwh]); bar = colorbar;

axis([126.85 142.15 35.05 48.1])

set(get(bar,'title'),'string','Hs(m)','fontsize',20);

xlabel('Longitude','fontsize',20); ylabel('Latitude','fontsize',20);

set(gcf,'color','w','position',[200 200 600 500]);

% close(figure(i));

end