To draw isodose curves using the contour function in MATLAB, you can follow these steps and refer to the attached code snippets. The contour function is used to create contour plots, which are useful for visualizing 3D data in 2D by representing lines of constant values.
1. You can read the binary file into a 3D array a, and then extract a 2D slice b at z=101.
fid = fopen('out-put-ASI-Dose.bin', 'r');
a = zeros(201, 201, 201);
for i = 1:201
a(i, :, :) = fread(fid, [201 201], 'float');
end
fclose(fid);
b = a(:, :, 101);
imshow(b, []);
3. The contour function is used to plot isodose curves from the 2D data slice. You can specify the number of contour levels you want or provide specific levels by replacing contourLevels with an array of values.Additionally, you can add a color bar to understand the correspondence between the contour levels and the actual dose values.
figure;
contourLevels = 10;
contour(b, contourLevels);
colorbar;
title('Isodose Curves');
xlabel('X-axis');
ylabel('Y-axis');
Happy coding!
