how to plot single curve with 2 yaxis align?

Hi everyone,

i am trying to plot only a single curve, and that every points of the curve is align to the data from Y1 and Y2, for example: (0.015, 0.05, -130) is not correctly plotted as shown in the image below (the phase difference is wrong.

i'm not sure if i am using the correct commands, appreaciate any help

X = [0.015 0.060 0.100 0.140]; %Equivalence Ratio
Y1 = [0.05 0.128 0.215 0.313] %HRR magnitude
Y2 = [-130 -118 -111 -105];    %Phase Difference

hold on
[ax,h1,h2] = plotyy(X,Y1,X,Y2,'plot');
set(h2, 'Visible','off') %turn off second plot (not needed)
set(h1,'LineStyle','--','Marker','s','Color','b',...
    'DisplayName',"q'/q_o")

Answer 1

[Cris LaPierre]

Your second plot is not appearing.

Starting in r2016a, the recommended way to plot with 2 y-axes is to use yyaxis.

 = [0.015 0.060 0.100 0.140]; %Equivalence Ratio
Y1 = [0.05 0.128 0.215 0.313]; %HRR magnitude
Y2 = [-130 -118 -111 -105];    %Phase Difference

yyaxis left
plot(X,Y1,'--bs',"DisplayName","q'/q_o")

yyaxis right
plot(X,Y2);

legend