matlab 画三维坐标图

编写mymesh()函数:
function mymesh()
temdat=load('D:\test.txt');
if temdat== -1
('Error opening the file');
end
figure;
h=plot3(temdat(:,1),temdat(:,2),temdat(:,3));
set(h,'linestyle','none')
hold on;
grid on;
[x,y]=meshgrid(linspace(-150,150,500),linspace(-150,150,500));
z = griddata(temdat(:,1),temdat(:,2),temdat(:,4),x,y);
meshc(x,y,z);
axis([0,180,0,180]);
坐标放在D:\test.txt里（你也可以改成其他的）,格式如下：
45 32 56
78 45 21
46 79 55
46 75 22
14 69 75
……