coding equation to m file

hey everyone a friend of mine help me with an equation and it work fine just i try to change it a litle but im not able there is out put, R value and X. x axis here is R but i want to change it to X exaclt viceversa with what you are seein here

please help me with

%%% ====== input values =========

U = 12;

% R = 2; % change from R=0,1,2,3

L = [2200e-6; 2.9e-3; 3.8e-3]; % change from 0.0022 to 0.0045 in mH

frequency = 400; % in Hz, maybe 50Hz.

fi = pi/3;

Er = 8;

ksi = 0.1;

Xv = 2*pi*frequency*L; % ‘X’ is now vector ‘Xv’

r = [];

y = [];

Rv = 0:0.1:3; % ‘R’ is now vector ‘Rv’

figure

hold all

for k1 = 1:numel(Xv)

X = Xv(k1); % ‘X’ is an element of ‘Xv’ in each loop iteration

for k2 = 1:numel(Rv)

R = Rv(k2);

r(k1,k2) = R;

a = exp((R/X)*(pi/3));

k = R/X;

alfa = atan(X/R);

alfa1 = alfa*0.017;

output = -R*U*(1+a)^2*exp(-k*(fi-pi/3))/(3*X^2*(1+a^3))+Er*sin(fi-ksi-alfa1)/sqrt(R^2+X^2);

y(k1,k2) = output;

end

plot (r(k1,:), y(k1,:))

OutpLeg{k1} = sprintf('Output L = %.1f mH', L(k1)*1000);

end

hold off

legend(OutpLeg)

xlabel('R'), ylabel('output')

title('gragh R\_output')

Answer 1

[moji abb]

%%% ====== input values =========
U   = 12;
% R   = 2;            % change from  R=0,1,2,3
L   = [2200e-6; 2.9e-3; 3.8e-3];           % change from 0.0022 to 0.0045 in mH
frequency = 400;       % in Hz, maybe 50Hz.
fi  = pi/3;
Er  = 8;
ksi = 0.1;
Xv   = 2*pi*frequency*L;                % ‘X’ is now vector ‘Xv’
r = [];
y = [];
Rv = 0:0.1:3;                           % ‘R’ is now vector ‘Rv’

figure
hold all
for k1 = 1:numel(Xv)
    X = Xv(k1);                          % ‘X’ is an element of ‘Xv’ in each loop iteration
    for k2 = 1:numel(Rv)
        R = Rv(k2);
        r(k1,k2) = R;
        a = exp((R/X)*(pi/3));
        k = R/X;
        alfa = atan(X/R);
        alfa1 = alfa*0.017;
        output = -R*U*(1+a)^2*exp(-k*(fi-pi/3))/(3*X^2*(1+a^3))+Er*sin(fi-ksi-alfa1)/sqrt(R^2+X^2);
        y(k1,k2) = output;
    end
    plot (r(k1,:), y(k1,:))
    OutpLeg{k1} = sprintf('Output L = %.1f mH', L(k1)*1000);
end
hold off
legend(OutpLeg)
xlabel('R'), ylabel('output')
title('gragh R\_output')

[darova]

What is the difference?

[moji abb]

What I'm looking is to Chang plots in this code x axis is R value with difrent impedance I need same equation but vice versa x axis is impedance with difrent resistance value

[darova]

What if just switch

% plot (r(k1,:), y(k1,:))
plot (y(k1,:), r(k1,:))

And change labels

ylabel('R'), xlabel('output')

[moji abb]

thank you for respond not good enough to explain let me try again :

current plot is out put with 2 different value " l and R I JUST need to change setting for these two i point in attached file Y AXIS is output

Y AXIS IS value L " AND OUT PUT change with difrrent value of R

[darova]

Still unclear, can you please try again to explain?

[moji abb]

sure i do my best

As you see in above code , I have an equation I need to find the out put of this equation with variable value of resistance and inductance , if you run the code you will see the Y AXIS IS OUT PUT AND X AXIS IS RESISTANCE , what I cant figure out is how to replace the place of resistance and inductance in plot. x axis is “R” but I should change it to “X” in simple language is I need to change the place of “R” AND “X” in plot

[darova]

You mean letter? Label?

xlabel('X')

[moji abb]

yes X label is inductance and other parameter with 3 difrent value is resistance