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

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

[Guillaume]

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);

[Gino]

Thank you for the fast reply !

Thanks for the side note, I missed that.

Using cell2mat(tile(M)) returns this error

Error using cat
Dimensions of matrices being concatenated are not consistent.

Error in cell2mat (line 84)
            m{n} = cat(1,c{:,n});

Error in Map (line 28)
tiledimage=cell2mat(tile(M));

I have also tried cell2mat(tile{M}) but that results in

Error using cell2mat
Too many input arguments.

Error in Map (line 28)
tiledimage=cell2mat(tile{M});

[Guillaume]

That's because some of your images in tile are 12*12 and others are 12*13. There's either a bug in your tile separation code or you got caught by the absurd concept of spatial coordinates implemented by matlab (see the Tips section of imcrop).

Anyway, this is guaranteed to work and is much simpler:

tile = mat2cell(I, ones(1, Tileset.height.tiles) * Tile.height, ones(1, Tileset.width.tiles) * Tile.width, size(I, 3))';
tile = tile(:);

[Gino]

That is really strange. The code works perfectly though, thank you !