double Conversion to double from struct is not possible.

Error using ==> double
Conversion to double from struct is not possible.

clc;
clear all;

x = load('S_chest.mat');
y = load('S_abdomen.mat');

A=zeros(size(x));
A(1,1)=x(1);

for n= 2:5955
    A(n,1)=x(n);
    A(n,2)=x(n-1);
end

What's wrong with that?

Answer 1

[Andrei Bobrov]

x1 = load('S_chest.mat');
y1 = load('S_abdomen.mat');
x = x1.x;
y = y1.y;
A=zeros(size(x));
A(1,1)=x(1);

for n= 2:5955
    A(n,1)=x(n);
    A(n,2)=x(n-1);
end

or

x1 = load('S_chest.mat');
x = x1.x;
n = numel(x); 
k = 5955;
A = toeplitz([x(1:k);zeros(n - k,1)],[x(k) 0]);
A(k+1,2) = 0;