how to give title of the legends?

Question

Muhammad 2021-10-2

0
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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/1465409-how-to-give-title-of-the-legends

评论： the cyclist 2021-10-3

i have the folowing code that generate step responce of every transfer function in plot i want to give the name of each legend ho i can do

clc
clear all
%muhammad sulaman
%19-ee-65
s=tf('s')
wn=0.7;
k=1;
% z=input('enter the value of zeta::');
z=[0 0.1 0.2 0.5  0.7 0.8 0.9 1]
for ii=1:1:8
    l=z(ii)
    t=linspace(1 ,100,1)
num=k*(wn^2)
den= s^2+2*l*wn*s+wn^2
sys(ii)=num/den
end
stepplot(sys(1),sys(2),sys(3),sys(4),sys(5),sys(6),sys(7),sys(8),t)

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Muhammad 2021-10-2

在 MATLAB Online 中打开

clc
clear all
%muhammad sulaman
clc
clear all
%muhammad sulaman
%19-ee-65
s=tf('s')
wn=0.7;
k=1;
% z=input('enter the value of zeta::');
z=[0 0.1 0.2 0.5  0.7 0.8 0.9 1]
for ii=1:1:8
    l=z(ii)
    t=linspace(1 ,100,1)
num=k*(wn^2)
den= s^2+2*l*wn*s+wn^2
sys(ii)=num/den
end
stepplot(sys(1),sys(2),sys(3),sys(4),sys(5),sys(6),sys(7),sys(8),t)
legend(sys(1),sys(2),sys(3),sys(4),sys(5),sys(6),sys(7),sys(8),'zeta 0','zeta 00.1','zeta 0.2','zeta 0.5','zeta 0.7''zeta 0.8''zeta 0.9','zeta 1')

its giving the error

Error using legend>process_inputs (line 582)
Invalid argument. Type 'help legend' for more
information.
Error in legend>make_legend (line 340)
[autoupdate,orient,location,position,children,listen,strings,propargs]
= process_inputs(ha,argin); %#ok
Error in legend (line 294)
    make_legend(ha,args(arg:end),version);
Error in lab2taskno1 (line 19)
legend(sys(1),sys(2),sys(3),sys(4),sys(5),sys(6),sys(7),sys(8),'show') 
>> 