I am not getting a graph when I plot

%Two arrays, one for pump voltage, another for the constant height

vp=[4 5 6 7 8 9 10];

h=[.009 .025 .048 .078 .11 .164 .20];

% system Parameters

Dc = 0.04445; % Diameter of tank in [m]

Do = 0.0047625; % Diameter of orifice in [m]

g = 9.81; % Gravitational acceleration in [m/s^2]

Ac = .0015518; % Cross-sectional area of tank based on diameter in [m^2]

Ao = .0000178; % Cross-sectional area of orifice based on diameter in [m^2]

%Kp = 0; % Pump constant in [m^3/s/V]

Cd = 0.15; % Unitless discharge coefficient between 0 and 1

%vp = 0; % Pump voltage in [V]

%Kp calculation

X=(2*g*h);

b=sqrt(X);

Kp=((Cd*Ao*b)/(vp));

%Plot simulation Results

%% Simulate System

%sim_time = 120; % Length of simulation in [s]

%sim Sim_OpenLoop.mdl % Execute simulation

figure(1);

%ylim([1.0*10^-07 5.0*10^-07]) %set x-axis range

xlim([4 10]) % Set y-axis range

plot(vp,Kp);

Answer 1

[BOB MATHEW SYJI]

Replace Kp=((Cd*Ao*b)/(vp)); as

Kp=((Cd*Ao*b)./(vp));

[BOB MATHEW SYJI]

Since vp is a vector, we have to divide each element in it. So instead of using /vp use ./vp

[Nataly Almasri]

YAY!! that worked thank you so much!

[BOB MATHEW SYJI]

So, do you accept my answer??

[John D'Errico]

If this help you, then please accept the answer.