%%绘图

suptitle(\'公路\')  %总标题
subplot(2,2,1);plot(x,y11,\'r-\')
hold on
plot(x,y21,\'b-\')
xlabel(\'方向\')
ylabel(\'能量\')
legend(\'草地\',\'公路\')
set(legend,\'edgecolor\',\'none\')
legend(\'boxoff\')  %legend无边框

%---
subplot(2,2,2); plot(x,y12,\'r-\')
hold on
plot(x,y22,\'b-\')
xlabel(\'方向\')
ylabel(\'相关性\')
legend(\'草地\',\'公路\')
set(legend,\'edgecolor\',\'none\')
%---
subplot(2,2,3);plot(x,y13,\'r-\')
hold on
plot(x,y23,\'b-\')
xlabel(\'方向\')
ylabel(\'对比度\')
legend(\'草地\',\'公路\')
set(legend,\'edgecolor\',\'none\')
%---
subplot(2,2,4);plot(x,y14,\'r-\')
hold on
plot(x,y24,\'b-\')
xlabel(\'方向\')
ylabel(\'熵\')
legend(\'草地\',\'公路\')
set(legend,\'edgecolor\',\'none\')