Adding legends to plots in a for loop

Question

Andreas Volden 2014-9-4

0
链接

此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/153456-adding-legends-to-plots-in-a-for-loop

回答： Kelly Kearney 2014-9-4

Hi!

I have a rookie problem(see code below). I want to assign legends to every plot, three in total, within the same figure.

I manage to get the plots in said configuration, but my legends don't follow, only the last assigned legend is visible. I've tried several ways without success, and this code is the closest I've gotten. Need some inputs from you guys!

for i=1:3;
    a(i) = feedback(sys(i),1);
    step(a(i),20);
    hold on
    if i==1;
        legend('Controller ZOH', 'Location', 'NorthWest');
    end
    if i==2;
        legend('Controller Tustin', 'Location', 'NorthEast');
    end
    if i==3;
        legend('Controller Euler', 'Location', 'SouthEast');
    end
end
hold off