Summing results at the end of a loop
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I have a piece of code I want to execute 3 times, changing a set of two variables to different values each time, and then add the results of the three at the end to give the final y-value and plot it.
This is the full code right now.
%Constants
L = 79.14.*(10.^-3);
N = 58;
I = 0.7;
mu = 4.*pi*(10.^-7);
% Range and steps of x-values to plot:
x = linspace(0, 90.*(10.^-3), 100);
%Variables;
w = 7.5.*(10.^-3);
u = (8.883).*(10.^-3);
%Calculation;
a = (mu.*I.*N)/(2.*L.*(u-w));
b = sqrt((u.^2)+(x.^2));
c = sqrt((u.^2)+((x-L).^2));
d = sqrt((w.^2)+(x.^2));
e = sqrt((w.^2)+((x-L).^2));
f = (b+u)./(d+w);
g = x.*log(f);
h = (c+u)./(e+w);
i = (x-L).*log(h);
j = (mu.*I.*N)/(2.*L.*(u-w));
y = j.*(g-i);
%Plotting;
figure;
plot(x, y);
xlabel('Position Along the Center Axis (m)');
ylabel('Magnetic Field (T)');
title('Magnetic Field Along the Central Axis of the Solenoid');
What I want to do is repeat the code for 3 sets of values of u and w, add the three results at the end to give the final value of y, and then plot it against x.
I thought about using for loops but I can't figure out how to sum the values at the end.
1 Comment
VBBV
on 17 May 2024
%Constants
L = 79.14.*(10.^-3);
N = 58;
I = 0.7;
mu = 4.*pi*(10.^-7);
% Range and steps of x-values to plot:
x = linspace(0, 90.*(10.^-3), 100);
%Variables;
w = [7.5.*(1e-3); rand(1)*7.5.*(1e-3); rand(1)*7.5.*(1e-3)];
u = [(8.883).*(1e-3);rand(1)*(8.883).*(1e-3);rand*(8.883).*(1e-3)];
x = linspace(0, 90*1e-3, 100);
for k = 1:numel(w)
%Calculation;
a = (mu.*I.*N)/(2.*L.*(u(k)-w(k)));
b = sqrt((u(k)^2)+(x.^2));
c = sqrt((u(k)^2)+((x-L).^2));
d = sqrt((w(k)^2)+(x.^2));
e = sqrt((w(k)^2)+((x-L).^2));
f = (b+u(k))./(d+w(k));
g = x.*log(f);
h = (c+u(k))./(e+w(k));
i = (x-L).*log(h);
j = (mu.*I.*N)/(2.*L.*(u(k)-w(k)));
y(k,:) = j.*(g-i);
end
y = sum(y,1)
%Plotting;
figure;
plot(x, y);
xlabel('Position Along the Center Axis (m)');
ylabel('Magnetic Field (T)');
title('Magnetic Field Along the Central Axis of the Solenoid');
Answers (1)
Torsten
on 16 May 2024
Edited: Torsten
on 16 May 2024
x = linspace(0, 90.*(10.^-3), 100);
w = [7.5.*(10.^-3),7.5.*(10.^-3),7.5.*(10.^-3)];
u = [(8.883).*(10.^-3),(8.883).*(10.^-3),(8.883).*(10.^-3)];
y = zeros(numel(w),numel(x));
for i = 1:numel(w)
y(i,:) = fun(x,w(i),u(i));
end
sum_y = sum(y,1);
%Plotting;
figure;
plot(x, sum_y);
xlabel('Position Along the Center Axis (m)');
ylabel('Magnetic Field (T)');
title('Magnetic Field Along the Central Axis of the Solenoid');
function y = fun(x,w,u)
%Constants
L = 79.14.*(10.^-3);
N = 58;
I = 0.7;
mu = 4.*pi*(10.^-7);
% Range and steps of x-values to plot:
%x = linspace(0, 90.*(10.^-3), 100);
%Variables;
%w = 7.5.*(10.^-3);
%u = (8.883).*(10.^-3);
%Calculation;
a = (mu.*I.*N)/(2.*L.*(u-w));
b = sqrt((u.^2)+(x.^2));
c = sqrt((u.^2)+((x-L).^2));
d = sqrt((w.^2)+(x.^2));
e = sqrt((w.^2)+((x-L).^2));
f = (b+u)./(d+w);
g = x.*log(f);
h = (c+u)./(e+w);
i = (x-L).*log(h);
j = (mu.*I.*N)/(2.*L.*(u-w));
y = j.*(g-i);
end
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