How do I get the phasor to rotate clock-wise direction?

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Kutlu Yigitturk 2021-3-1

2
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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/759429-how-do-i-get-the-phasor-to-rotate-clock-wise-direction

评论： Kutlu Yigitturk 2021-3-1

f = input(' frequency in Hz >> ')
A = input(' amplitude (>0) >> ')
theta = input(' phase in degrees >> ')
omega = 2*pi*f; % frequency rad/s
tmax = 1/f; % one period of sinusoid
time = [ ]; n=0; % initialization
figure(1)
for t=0:tmax/36:tmax % loop
    z=A*exp(j*(omega*t+theta*pi/180));
    x=real(z); y = imag(z); % projection
    time = [time t]; % sequence
    subplot(121) % subplot 1 of 2
    compass(x,y); % plot vector
    axis('square') % square axis
    subplot(122)
    plot(n*tmax/36,x,'*r') % plot x point in red ’*’
    axis('square');
    axis([0 tmax -1.1*A 1.1*A]); grid % bounds; grid
    hold on % hold current plot
    if n == 0 % execute next statement when n=0
    pause(1) % pause
    else % if n=0 not satisfied go next statement
    pause(0.1)
    end % end of conditional
    n = n+1; % increment
end % end loop
hold on % dismiss hold on

The user enters the frequency, amplitude and phase in degrees values and obtains a phasor graph. I am just getting the phasor graph rotating anti-clock-wise whit this code. What should I do to get a clock-wise rotating phasor graph?

Thank you for your help.