MATLAB: How to create an image with a matrix and a cell array

Question

I'm currently trying to create an Image of a 2D Game Map in Matlab.

Using a 3rd party program i have created a Matrix M, that designates where which tile should be used.

As of now my Code looks like this:

I=imread('tileset1.png');
M=dlmread('Karte.txt');       
%Creating the tiles using the picture
Tileset.width.tiles=32;        %Width of my tileset1.png in tiles
Tileset.height.tiles=19;       %height of my tileset in tiles
Tile.width=12;                 %width of a tile in pixels
Tile.height=12;                %height of a tile in pixels
Nr.tiles=Tileset.width.tiles*Tileset.height.tiles;
tile=zeros(0,(Nr.tiles));
for n=1:(Nr.tiles)
    x=mod(n,Tileset.width.tiles);
    y=floor(n/Tileset.width.tiles);
    rect=[((x*Tile.width)-Tile.width),((y*Tile.height)+1),Tile.width,(Tile.height-1)];
    tile{n}=imcrop(I,rect);
end

I want to create an image using my tile cells in their designated spots using the matrix M.

Thanks in advance !

Edit : I have included Karte.txt and tileset1.png which I use in my code.

Answer 1

If I understood correctly, and assuming M is an m*n matrix of tile indices, it should simply be:

tiledimage = cell2mat(tile(M));

----

Side note: Your

tile=zeros(0,(Nr.tiles));

should be

tile = cell(1, Nr.tiles);