Plotting a parker spiral?

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Zoe Zontos
Zoe Zontos 2016-11-21
评论： Zoe Zontos 2016-11-21
Hello,
Does anyone possibly know how to plot a Parker (Archimedean) spiral in reference to heliospheric current sheets studied in space physics. If so, could anyone point me in the right direction of where to begin plotting it on Matlab?
Thank you!

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Image Analyst
Image Analyst 2016-11-21
Do you have an equation for it? Maybe you should look at quiver()? Or check out the MATLAB Plot Gallery
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Image Analyst
Image Analyst 2016-11-21
Try this:
t = 1 : 1000; % A thousand points.
u = 0.10;
r0 = 50;
% Compute radius as a function of time.
r = r0 + u * t;
omega = .060
phi0 = 3
phi = -omega*t+phi0
x = r .* cos(phi);
y = r .* sin(phi);
plot(x, y, 'LineWidth', 2);
grid on;
Zoe Zontos
Zoe Zontos 2016-11-21
Thank you so much!

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