Holding stepplot and pzplot in same loop

Hi,

I am unable to hold both stepplot and pzplot in this loop despite trying different answers in the forum.

Can someone help?

syms g s z w
w1 = 4
z1 = 0.5
getAllInfo(w1,z1)

w2 = 4
z2 = 0.3
getAllInfo(w2,z2)

w3 = 2
z3 = 0.5
getAllInfo(w3,z3)

w4 = 2
z4 = 0.3
getAllInfo(w4,z4)


function getAllInfo(w,z)
    num = [w^2]
    den = [1 2*z*w w^2]
    G = tf(num, den)
    stepplot(G); 
    ax1 = axes ;
    hold(ax1,'on')
    
    figure()
    pzplot(G);
    ax2 = axes ; 
    hold(ax2,'on')
    
end

Answer 1

[Reshma Nerella]

Hi,

One solution might be creating axes outside the function and pass them as parameters to the function.

Use hold on and plot on required axes.

For instance

f1 = figure;
ax1 = axes(f1) ;
f2 = figure;
ax2 = axes(f2) ; 
hold(ax1,'on');
hold(ax2,'on');

syms g s z w
w1 = 4
z1 = 0.5
getAllInfo(w1,z1,ax1,ax2)

function getAllInfo(w,z,ax1,ax2)
    num = [w^2]
    den = [1 2*z*w w^2]
    G = tf(num, den)
    stepplot(ax1,G); 
    pzplot(ax2,G);
end

This will create all stepplots in one figure and pzplots in other one.

Hope this helps!