MATLAB: Plotting graph by using looping

Question

Hi,

I have a hard code pasted below: Can anyone help me reducing the amount of lines I have plotted by putting this into loop. I would like to plot nearly 10 curves on the same graph.

Q = 1

Q1 = 9

Q2 = 8

Q3 = 7

Q4 = 6

Q5 = 5

Q6 = 4

Q7 = 3

Q8 = 2

Q9 = 1

depth = Q^(2/3)/(3*(g)^(1/3))

depth1 = Q1^(2/3)/(3*(g)^(1/3))

depth2= Q2^(2/3)/(3*(g)^(1/3))

depth3 = Q3^(2/3)/(3*(g)^(1/3))

depth4 = Q4^(2/3)/(3*(g)^(1/3))

depth5 = Q5^(2/3)/(3*(g)^(1/3))

depth6 = Q6^(2/3)/(3*(g)^(1/3))

depth7 = Q7^(2/3)/(3*(g)^(1/3))

depth8 = Q8^(2/3)/(3*(g)^(1/3))

depth9 = Q9^(2/3)/(3*(g)^(1/3))

A = Wvaries.*depth

A1 = Wvaries.*depth1

A2 = Wvaries.*depth2

A3 = Wvaries.*depth3

A4 = Wvaries.*depth4

A5 = Wvaries.*depth5

A6 = Wvaries.*depth6

A7 = Wvaries.*depth7

A8 = Wvaries.*depth8

A9 = Wvaries.*depth9

V = Q ./ A

V1 = Q1 ./ A1

V2 = Q2 ./ A2

V3 = Q3 ./ A3

V4 = Q4 ./ A4

V5 = Q5 ./ A5

V6 = Q6 ./ A6

V7 = Q7 ./ A7

V8 = Q8 ./ A8

V9 = Q9 ./ A9

plot (Wvaries,V);

hold on

plot (Wvaries,V1);

hold on

plot (Wvaries,V2);

hold on

plot (Wvaries,V3);

hold on

plot (Wvaries,V4);

hold on

plot (Wvaries,V5);

hold on

plot (Wvaries,V6);

hold on

plot (Wvaries,V7);

hold on

plot (Wvaries,V8);

hold on

plot (Wvaries,V9);

hold on

grid on

Answer 1

I guess you are trying to do something like this

g = 1;
Wvaries = 1:10;
Q = [1 9 8 7 6 5 4 3 2 1];
depth = Q.^(2/3)./(3*(g).^(1/3));
A = Wvaries.*depth;
V = Q ./ A;
plot (Wvaries, V);

Read about arrays: https://www.mathworks.com/help/matlab/learn_matlab/matrices-and-arrays.html and array operations: https://www.mathworks.com/help/matlab/matlab_prog/array-vs-matrix-operations.html.