plotting x,y,z vertices as mesh

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steamrice 2020-3-10

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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/510009-plotting-x-y-z-vertices-as-mesh

评论： steamrice 2020-3-11

Hello there,

I have a .xls file that contains x,y,z vertics. The sequence goes something like this: x0,y0,z0,x1,y2,z2,..........x1000,y1000,z1000 (1000data points for each x,y,z)

I am wondering is it possbile to plot all the data using mesh? I plotted only x0,y0,z0 using one of the solutions I reading using trimesh, but there is line between instead of dots. https://www.mathworks.com/matlabcentral/answers/220-3d-plot-from-imported-excel-data

That's what I have so far:

clc;clear;close all;
test = xlsread('data.xls');
x=test(:,2);
y=test(:,3);
z=test(:,4);
x = rand(100,1);                  % Sample x data
y = rand(100,1);                  % Sample y data
z = exp(-(x-0.5).^2-(y-0.5).^2);  % Sample z data (a 2-D Gaussian)
tri = delaunay(x,y);              % Create a 2-D triangular mesh
trimesh(tri,x,y,z);               % Plot the mesh in 3-D

Any suggestions and helps please?

Thanks in advance

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Walter Roberson 2020-3-10

That approach should work, provided that you remove those 'Sample' lines.

Can you attach your data.xls for testing?

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回答（1 个）

KSSV 2020-3-10

2
链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/510009-plotting-x-y-z-vertices-as-mesh#answer_419375

在 MATLAB Online 中打开

clc;clear;close all;
test = xlsread('data.xls');
x=test(:,2);
y=test(:,3);
z=test(:,4);
tri = delaunay(x,y);              % Create a 2-D triangular mesh
figure
trimesh(tri,x,y,z);               % Plot the mesh in 3-D
figure
triplot(tri,x,y);               
figure
trisurf(tri,x,y,z);               % Plot the surface in 3-D
shading interp 