以五个点为例,x为纬度,y为经度
x=[39.929986 37.890277 43.898338 31.249162 22.546054];
y=[116.395645 112.550864 125.313642 121.487899 114.025974];
X=x'
Y=y'
C=[X Y]
for i=1:5
for j=1:5
D(i,j)=distance(C(i,1),C(i,2),C(j,1),C(j,2));
end
end