plot a spiral in matlab

To plot a spiral in MATLAB, there are several methods. One way is to use the polar plot function. Here is an example:

main.m
% Define the spiral parameters
a = 0.5; % coefficient that controls the size of the spiral
b = 0.2; % coefficient that controls the tightness of the spiral

% Define the angle range
theta = linspace(0, 10*pi, 1000);

% Calculate the spiral coordinates
r = a*exp(b*theta);
x = r.*cos(theta);
y = r.*sin(theta);

% Plot the spiral
polarplot(theta, r);
350 chars
15 lines

In this example, we first define the coefficients a and b that control the size and tightness of the spiral. Then, we define the angle range theta and calculate the polar coordinates r, x, and y of the spiral. Finally, we use the polarplot function to plot the spiral.

Note that we used the polarplot function instead of the regular plot function because the spiral is defined in polar coordinates. However, if you prefer to plot the spiral in Cartesian coordinates, you can simply use the regular plot function:

main.m
plot(x, y);
12 chars
2 lines

This will yield a similar spiral plot in Cartesian coordinates.