Not certain exactly what you want to do, but see if this gets you started:
v = linspace(0.01, 0.1, 10); % Velocity
a = linspace(-90, 90, 10); % Angle (degrees)
x = v.*cosd(a); % Create ‘x’ Coordinate
y = v.*sind(a); % Create ‘y’ Coordinate
dx = gradient(x); % Create x-Direction Vector
dy = gradient(y); % Create y-Direction Vector
figure(1)
quiver(x, y, dx, dy)
grid
I used degrees for the angles, and so sind and cosd. If you use radian measure, use sin and cos.
