matlab进行地图仪的绘制

% 绘制地球仪，并标出我们的位置
cla reset;
load topo;

[x,y,z] = sphere(45);%45是画出来的球面的经纬分面数
s = surface(x,y,z,'FaceColor','texturemap','CData',topo);
colormap(topomap1);

% Brighten the colormap for better annotation visibility:
brighten(.6)

% Create and arrange the camera and lighting for better visibility:
campos([1.3239  -14.4250  8.4954]);
camlight;
lighting gouraud;

axis off vis3d; %axis off关闭所有的坐标轴标签、刻度、背景

% Set the x- and y-coordinates of the textarrow object:
x = [0.7698 0.5851];
y = [0.3593 0.5492];
% Create the textarrow object:
txtar =  annotation('textarrow',x,y,'String','We are here.','FontSize',14,'Color',[.9,0,0]);

% control of visual
set(gcf,'Position',[100 50 600 500]) % [x_ori,y_ori,w,h], x_ori,y_ori以左下角为起点，向右为x,向上为y