Piecing a Puzzle together in Matlab

I was given a Matlab code that contained 8 pictures files that when combined make a larger picture. I created a matrix of zeros that each picture would go in but I am stuck on how to put the pictures into the matrix.

This is what I have so far:

% start fresh
clear all
close all
clc

 %Viewing each piece of the puzzle
load('puzzle.mat')
% image(piece_1);
% image(piece_2);
% image(piece_3);
% image(piece_4); 
% image(piece_5); 
% image(piece_6); 
% image(piece_7); 
% image(piece_8); 
% colormap(gray(256))

%declaring X
X = zeros(400,600);

%putting pieces of puzzle in X in order

%Displaying X
image(X);

I just do not know how to piece the images together in the matrix of zeros. Each piece is of a different length (EX. one piece is a 100X200 matrix where another is 100X250)

Answer 1

[Jan]

You can concatenate two arrays horizontally and vertically by the cat() command:

x = rand(2, 2);
y = rand(2, 2);
h = cat(2, x, y)    % equivalently: [x, y]
v = cat(1, x, y)    % equivalently: [x; y]

So all you need is to concatenate the arrays horizontally at first, and vertically at second, perhaps:

[[piece_1, piece_2]; ...
 [piece_3, piece_4 etc];
 [etc.]]

or using the equivalent cat() commands.