editing inside cells array

     I have this cells array which is came from a mat lab code that generates dewey IDs:

   POT1 = 

          'a0'      []      []      []
          'a0'    'c0'      []      []
          'a0'    'b0'      []      []
          'a0'    'c1'      []      []
          'a0'    'd0'      []      []
          'a0'    'c0'    'd1'      []
          'a0'    'b0'    'd2'      []
          'a0'    'd0'    'd3'      []
          'a0'    'd0'    'c2'      []
          'a0'    'd0'    'b1'      []
          'a0'    'd0'    'd4'      []
          'a0'    'c1'    'c3'      []
          'a0'    'c1'    'b2'      []
          'a0'    'c1'    'c3'    'd5'
          'a0'    'c1'    'b2'    'd6'
          'a0'    'd0'    'b1'    'd7'
          'a0'    'd0'    'c2'    'd8'

note that column 1 is parent of column 2 and column 2 is paret of column 3..etc

so I want to build a code that gives the full name of each cell as follow:

POT1 = 
  a0      []       []          []
  a0    a0.c0      []          []
  a0    a0.b0      []          []
  a0    a0.c1      []          []
  a0    a0.d0      []          []
  a0    a0.c0    a0.c0.d1      []
  a0    a0.b0    a0.b0.d2      []
  a0    a0.d0    a0.d0.d3      []
  a0    a0.d0    a0.d0.c2      []
  a0    a0.d0    a0.d0.b1      []
  .
  .
  .
  .     

 The code which I build is not complete and gives me :" Index exceeds matrix dimensions" error :

for i=1:length(POT1)
      for j=3:size(POT1,2)
          if ~isempty(POT1{i,j})
          POT1{i,j}=[POT1{i,j-2} POT1{i,j-1} POT1{i,j}];
          end
      end
  end
  POT1

Answer 1

[Grzegorz Knor]

You can try this code:

for i=1:size(POT1,1)
    for j=2:size(POT1,2)
        if ~isempty(POT1{i,j})
            POT1{i,j}=strcat(POT1{i,j-1}, '.', POT1{i,j});
        end
    end
end