How can I add a partially transparent solid angle volume (defined by azimuth and elevation angles) to highlight a region of interest in a Site Viewer window?

I would like to highlight a region of interest in the 3D window of Site Viewer that looks like a wedge emanating from a TX site with a specified angular width in azimuth and another thickness specified in elevation, and I would want to trancate the region to be within a certain range. What would be the best way to do so?

Answer 1

[Ayush]

Hi @Clinton Siedenburg

I understand that you need to highlight region of interest in the 3D window of Site Viewer that looks like a wedge emanating from a TX site with a specified angular width in azimuth and another thickness specified in elevation, and to trancate the region to be within a certain range. Here is the dummy example to demonstrate how you might create a wedge-shaped region and truncate it within a certain range:

% Generate temporary 3D spatial data for demonstration
[x, y, z] = meshgrid(-50:50, -50:50, 0:10);

% Define the coordinates of the TX site
x_tx = 0;
y_tx = 0;
z_tx = 0;

% Define the azimuthal width and elevation thickness of the wedge
azimuthal_width = 30;  % in degrees
elevation_thickness = 20;  % in meters

% Create a mask to isolate the wedge-shaped region based on azimuthal width and elevation thickness
mask = ((x - x_tx).^2 + (y - y_tx).^2) < (tand(azimuthal_width) * (z - z_tx));
mask = mask & (z < z_tx + elevation_thickness);

% Apply the mask to truncate the defined region
truncated_x = x(mask);
truncated_y = y(mask);
truncated_z = z(mask);

% Visualize the truncated region using scatter plot
% figure;
% scatter3(truncated_x(:), truncated_y(:), truncated_z(:), 'filled', 'MarkerFaceColor', 'r');
% xlabel('X');
% ylabel('Y');
% zlabel('Z');
% title('Truncated Wedge-shaped Region');

% Create a triangulation object
tri = delaunayTriangulation(truncated_x(:), truncated_y(:), truncated_z(:));

tetramesh(tri);

You can export this as a 3-D object and use it in your tx site. For more information you can refer to the link: https://www.mathworks.com/help/antenna/ref/siteviewer.html#mw_60551f20-14fb-400b-8be8-8623cf4f3d54

Thank you.