How to create a 3D surface plot from scatter3?

Hello All,

I would like to create a 3D surface plot from the 625 data points which are taken at certain intervals. Each data points in a row represents a vector with its X,Y and Z values represented in the first, second and third column, respectively. Using scatter3 function I can visualize the results. Below is the code. But I need to represent it in the form of a continuous 3Dsurface for better visualization.

Could anyone suggest me how can I proceed?

For creating the 3D surface the colour code should follow: sqrt(x^2+y^2+z^2)

The test.txt file is also included in order to have a look.

Thanking you in advance.

test=load('test.txt');
x = test(:,1);
y = test(:,2);
z = test(:,3);
s=scatter3(x,y,z);
view(3);

[Jeffrey Clark]

@SAHOO Sudeep Kumar, please look at response to 3D Surface plot of a body for which the xyz coordinates are given - (mathworks.com)

Answer 1

[Chunru]

test=load('test.txt');
x = test(:,1);
y = test(:,2);
z = test(:,3);
s=scatter3(x,y,z);
view(3);

figure
dt = delaunayTriangulation(x, y, z);

Warning: Duplicate data points have been detected and removed.
The Triangulation indices are defined with respect to the unique set of points in delaunayTriangulation.

figure
tetramesh(dt, 'EdgeColor', 'none')