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Update ellipsoid_fit_data.m #1

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4 changes: 2 additions & 2 deletions ellipsoid_fit_data.m
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Original file line number Diff line number Diff line change
Expand Up @@ -7,12 +7,12 @@
D_pca_y = D_pca(:,2);
% scatter plot the data with asterisks '*'
plot(D_pca_x,D_pca_y,'*')
hold on
% Define ellipse_x and ellipse_y, x and y coordinates for the PCA ellipsoid in the first 2 dimensions as a function of theta
theta = 2*pi*[0:100]/100;

ellipse_x = 2*sqrt(eigvals(1))*cos(theta);
ellipse_y = 2*sqrt(eigvals(2))*sin(theta);
%Plot the ellipse with red dashed lines 'r--'

plot(ellipse_x,ellipse_y,'r--')
%Use axis equal to correct aspect ratio
axis equal