plot complex eigenvalues over time

4 次查看（过去 30 天）
Douglas Bowman2022-1-5

Given an 1584 x 8 matrix of 8 complex eigenvalues varying over 1584 time steps, I'd like to plot them together in maybe a 3-d plot? This will allow me to see how all eigenvalues change with time, all on one plot.
Doug

回答（1 个）

Chunru 2022-1-6

n = 20;
x = (3+randn(n,8)) + 1i*(2+randn(n, 8)); % generate some data 20x8 instead of 1584 x 8
cmap = jet(n);
% use different color for different time
figure
hold on
for i=1:n
plot3(real(x(i,:)), imag(x(i, :)), i*ones(1,8), 'o','Color', cmap(i,:));
end
box on
grid on
xlabel('Real'); ylabel('Imag'); zlabel('Time')
view(3)
figure
% Use color to reprenset eigen values
m = 8
m = 8
cmap = jet(m);
% use different color for different time
figure
hold on
for j=1:m
plot3(real(x(:,j)), imag(x(:, j)), (1:n), 'o','Color', cmap(j,:));
end
box on
grid on
xlabel('Real'); ylabel('Imag'); zlabel('Time')
view(3)
Chunru 2022-1-8
See above.

R2021a

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!

Translated by