Hot to rotate pdegplot about Z, X, or Y axis?

Hi, i imported stl model by using pdegplot comand, and want to ask is it possible to rotate it about z, x, or y axises? https://www.mathworks.com/help/pde/ug/stl-file-import.html here is example of stl file importing

Answer 1

[Shantanu Dixit]

Hi Baisseyev,

If I understood your query correctly, you want to rotate the visualization of your STL model. You can achieve this using the 'view': https://in.mathworks.com/help/matlab/ref/view.html function in MATLAB, which allows to change the azimuth (horizontal rotation) and elevation (vertical rotation) angles without altering the actual model. Below is an example that displays a particular model from three different perspectives:

model = createpde();
importGeometry(model, 'MotherboardFragment1.stl');

figure;

% First subplot: Default top-down view
subplot(1,3,1);
pdegplot(model);
title('Top-Down View');
axis equal;
view([0, 90]); % Top-down view

% Second subplot: Rotated view (45° Azimuth, 30° Elevation)
subplot(1,3,2);
pdegplot(model);
title('Angled View (Az=45, El=30)');
axis equal;
view([45, 30]); % Custom rotation

% Third subplot: Side view (90° Azimuth, 0° Elevation)
subplot(1,3,3);
pdegplot(model);
title('Side View');
axis equal;
view([90, 0]); % Side view

If the actual geometry needs to be rotated rather than just changing the viewpoint, you can apply a rotation matrix to transform the model’s coordinates and use the rotated nodes to plot the figure using functions like 'trisurf': https://in.mathworks.com/help/matlab/ref/trisurf.html

Hope this helps!