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. 
mathworks.com › matlabcentral › answers › 422733-how-can-i-write-the-function-which-input-is-a-3x3-matrix-named-a-and-the-program-should-output-cor
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 from Stephen23 on mathworks.com
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