clear;%%read 3D data
fileID=fopen('C:\Users\23124\Desktop\坐标转换\cloud1.txt','r');%txt文件读成三维元胞数组cell形式
A =textscan(fileID,'%d %d %d');%X,Y,Z数据类型均为 1*1 cell
X=A(:,1);
Y=A(:,2);
Z=A(:,3);%将元胞数组转化为矩阵形式
x=cell2mat(X);
y=cell2mat(Y);
z=cell2mat(Z);%%show 3D data
%plot3(67,65,153,'*')plot3(x,y,z,'.',67,65,153,'*');%红色圆点
xlabel('x轴'),ylabel('y轴'),zlabel('z轴')
grid on
