Add empty cell inside a cell array considering a single array

Question

luca 2019-10-17

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https://ww2.mathworks.cn/matlabcentral/answers/485978-add-empty-cell-inside-a-cell-array-considering-a-single-array

回答： Daniya Zafar 2022-1-5

Hi I have a cell array

GGG = {{[1 2 2 1 3 4 9 9 6 1 3 3 2 1 2 4 3 ; 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85],[ 2 2 3 3 4 9 4 9 6 4 9 3 3 2 2 4 ; 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 78]},{[ 2 2 3 3 4 9 4 9 6 4 9 3 3 2 2 4 ; 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 78]}};

given an array

SP= [1 2 3 4 5 6]

I want to add in each cell of GGG a number of empty cell that is equal to the maximum value inside SP minus the actual number of cell in each cell of GGG

CONSIDERING THE FIRST CELL OF GGG, is a 1*2 cell. inside this cell I want to add 6-2=4 empty cell

CONSIDERING THE SECOND CELL OF GGG, is a 1*1 cell, inside this cell I want to add 6-1=5 empty cell

obtaining

GGG = {{[1 2 2 1 3 4 9 9 6 1 3 3 2 1 2 4 3 ; 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85],[ 2 2 3 3 4 9 4 9 6 4 9 3 3 2 2 4 ; 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 78],[],[],[],[]},{[ 2 2 3 3 4 9 4 9 6 4 9 3 3 2 2 4 ; 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 78],[],[],[],[],[]}};

May someone help me with this code?

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Answer 1

Guillaume 2019-10-17

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Surely, by now, with all the questions you've asked, you should be able to manipulate cell arrays yourself.

Anyway:

desiredlenght = max(SP);
result = cellfun(@(c) [c, cell(1, desiredlength - numel(c))], GGG, 'UniformOutput', false)

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luca 2019-10-18

Unfortunately still I'm not familiar with the use of cellfun!

In any case thanks Guillaume for all your explanation, I think I've improved my MATLAB knowledge starting from the beginning

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Answer 2

Raptrick 2019-10-17

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Hi Luca,

Does this help you?

GGG = {{[1 2 2 1 3 4 9 9 6 1 3 3 2 1 2 4 3 ; 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85],[ 2 2 3 3 4 9 4 9 6 4 9 3 3 2 2 4 ; 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 78]},{[ 2 2 3 3 4 9 4 9 6 4 9 3 3 2 2 4 ; 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 78]}};
SP= [1 2 3 4 5 6];
for i =1:length(GGG)    
   addEmptyCells = max(SP)-length(GGG{i});
   for j = 1:addEmptyCells
      GGG{i}{end+1} = []; 
   end
end