How can i write the function which input is a 3×3 matrix, named A, and the program should output corresponding picture in a txt file. The number in matrix A determines how many cubes should be located in the corresponding position.

How can I write the function which input is a 3×3 matrix, named A, and the program should output the corresponding picture in a txt file. The number in matrix A determines how many cubes should be located in the corresponding position. Here are some samples in picture

[Walter Roberson]

What are the first and last rows for?

[Walter Roberson]

So first row is "behind", last row is "in front"?

[John Drake]

Yes

[Stephen23]

@John Drake: do not close question that have answers. This is a public forum, and the volunteers who answer questions here do so on the understanding that their answer will be available for all future browsers of this forum. By deleting your question text and closing the question you unilaterally decide that their volunteer effort and time belongs only to you. This is not appreciated.

If you want private consulting then you can find plenty of services on the internet who will happily give you code and help, in return for a small fee.

Answer 1

[Stephen23]

Here is one approach using simple loops and indexing.

You will have to do some fine-tuning to get it to suit your requirements.

A = [0,0,0;0,2,1;0,1,0]; % Input 3x3 matrix.
%
M = [... % base cube
    '~~~______~';
    '~~/     /|';
    '~/     / |';
    '/_____/  |';
    '|     |  /';
    '|     | /~';
    '|_____|/~~'];
% 
Sa = size(A);
Sm = size(M);
Xm = M~='~';
Xr = cell(Sa);
Xc = cell(Sa);
% Generate indices:
for ii = 1:Sa(1) % back -> front.
    for jj = 1:Sa(2) % left -> right.
        for kk = 1:A(ii,jj) % bottom -> top.
            R = ii*3 - kk*3;
            C = jj*6 - ii*3 - kk; % try without kk.
            Xr{ii,jj} = [Xr{ii,jj};R+1-Sm(1):R];
            Xc{ii,jj} = [Xc{ii,jj};C+1-Sm(2):C];
        end
    end
end
% Normalize indices:
Xr = vertcat(Xr{:});
Xc = vertcat(Xc{:});
Xr = 1+Xr-min(Xr(:));
Xc = 1+Xc-min(Xc(:));
% Place cube at required locations:
Z = repmat(' ',max(Xr(:)),max(Xc(:)));
for nn = 1:sum(A(:))
    tmp = Z(Xr(nn,:),Xc(nn,:));
    tmp(Xm) = M(Xm); % keep char outside the cube.
    Z(Xr(nn,:),Xc(nn,:)) = tmp;
end
disp(Z)

Displays this in the command window:

       ______
      /     /|
     /     / |
    /_____/  |______
    |     |  /     /|
    |     | /     / |
    |______/_____/  |
    /     /|     |  /
   /     / |     | /
  /_____/  |_____|/
  |     |  /
  |     | /
  |_____|/

Tested with the first example input matrix:

>> A = [0,0,0;0,1,1;0,0,0]
A =
   0   0   0
   0   1   1
   0   0   0

Giving

     ____________
    /     /     /|
   /     /     / |
  /_____/_____/  |
  |     |     |  /
  |     |     | /
  |_____|_____|/

Answer 2

[KSSV]

You need to plot a cube....have a look on this file exchange function: https://in.mathworks.com/matlabcentral/fileexchange/15161-plotcube

[John Drake]

Not ploting, drawing a cubes in a txt file, that's the problem

[KSSV]

Ohhh.....yes it is mentioned a text file..why text file in specific?

[John Drake]

So after getting the input , i have to create txt file with cubes only using symbols '/', '_', '|'. I hope you got that! Please help!