How do I make this code into a function I can't manipulate=?

How do i make this code into a function?

(This code creates a graph with randomly plotted ellipses)

rng(675382) %regenerates the same values for randn

N = 20;

for R = 1:N %for loop to repeat 10 times

t = linspace(0,2*pi); % t defined angle??? not sure

xc = randn; %defines one of axis as random

x = xc + randn*cos(t);

yc = randn;

y = yc + randn*sin(t);

plot(x,y)

patch(x,y,rand)

hold on %puts all ellipses on same graph

end

My end goal is to rotate the fucntion with a rotation matrix.

[Rik]

What exactly do you want to rotate? You can't rotate a Matlab function, and your code doesn't seem to describe a mathematical function.

Answer 1

[Monisha Nalluru]

From my understanding you wanted to get x,y matrix after performing the operations from a function

These can be done by adding return type to function

function [X,Y] = generatematrix(N)
    X=[];
    Y=[];
    for R = 1:N             %for loop to repeat N times 
        t = linspace(0,2*pi);   
        xc = randn;             
        x = xc + randn*cos(t);        
        yc = randn;
        y = yc + randn*sin(t);
        X=[X;x];
        Y=[Y;y];
        plot(x,y)
        patch(x,y,rand)
        hold on                 
    end 
end

Now you can calculate rotation matrix using X,Y

[Rik]

Why no preallocation? You know how large the resulting matrix will be, so that would improve the efficiency of your code.