How to subplot two or more multiple-plots created by different loops

Hi,

I am trying to create a subplot(2,1), but I do not know how I should use this function when I have two plots created by differents loops. Here the code without subplot:

 clear all; clc;

 n=input('The value of n is:');

 k=100;

 X1=linspace(-20,20,k);

 X2=linspace(-1,1,k);

 M=zeros(n,k);

 N=zeros(n,k);

 figure(); hold on

 for i = 1:n

    plot(X1,besselj(i,X1));

    legendInfo{i} = ['n = ' num2str(i)];

 end

 legend(legendInfo)

 title('Bessel')

 xlabel('X')

 ylabel('Y')

 hold off

 figure(); hold on

 for i = 1:n

   plot(X2,legendre(i,X2));

   legendInfo{i} = ['n = ' num2str(i)];

 end

 legend(legendInfo)

 title('Legendre')

 xlabel('X')

 ylabel('Y')

 hold off

My question is: Where I put the subplot function? I have tried and the only thing that I get is error.

Thank you very much.

Have a nice day.

Answer 1

[Aditya]

Hi Jaime,

To create subplots for multiple plots generated by different loops, follow these steps:

1. Use "subplot(2,1,1)" before the first loop to place the Bessel function plot in the first row.
2. Use "subplot(2,1,2)" before the second loop to place the Legendre function plot in the second row.
3. Don't call "figure()" before each for loop.

Here is how the updated code looks like:

clear all; clc;
n = input('The value of n is:');
k = 100;
X1 = linspace(-20,20,k);
X2 = linspace(-1,1,k);
M = zeros(n,k);
N = zeros(n,k);

figure; % Create a single figure for subplots

% First subplot for Bessel function
subplot(2,1,1); hold on;
legendInfo = cell(n,1);
for i = 1:n
    plot(X1, besselj(i, X1));
    legendInfo{i} = ['n = ' num2str(i)];
end
legend(legendInfo);
title('Bessel Function');
xlabel('X');
ylabel('Y');
hold off;

% Second subplot for Legendre function
subplot(2,1,2); hold on;
legendInfo = cell(n,1);
for i = 1:n
    plot(X2, legendre(i, X2));
    legendInfo{i} = ['n = ' num2str(i)];
end
legend(legendInfo);
title('Legendre Function');
xlabel('X');
ylabel('Y');
hold off;

For more details on the subplot function refer to the below MATLAB documentation:

• subplot - Create axes in tiled positions

I hope this helps!