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Populate a table (or concatenate a cell array) with various data types

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Guillaume Migeon
Guillaume Migeon on 12 Apr 2019
Commented: A. Sawas on 16 Apr 2019
Hi there!
I am stuck with a problem. I would like to display various kind of data into a table in the App Designer. I know I have to put all the data in a cell-array, but I always have multiple errors and I can't do properly the conversions.
For instance, let's say
A = {} % The cell array that contains the data of my table
B = [1 2 3;
4 5 6]
C = {'blabla', 5;
B , struct}
My goal at the end is to obtain
A = {'B' , '' , '' ; % Name of B, I know I can get it by a little function using inputName()
1 , 2 , 3 ;
4 , 5 , 6 ;
'' , '' , '' ; % A blank row for readability
'C' , '' , '' ;
'blabla' , 5 , '' ;
'2x3 double' , '1x1 struct' , '' } % We cannot print these kind of value in one single table cell, so we just indicate their class and size
I suppose I have to use functions such as reshape(), num2cell(), and use A = [A ; {...}] to concatenate my data, and this one induces more problems such as: how to resize in order to match dimensions...
Thank you very much for your help!

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Accepted Answer

A. Sawas
A. Sawas on 13 Apr 2019
Try this function which will prety much do the job for you. You may optimize it to preallocate A as well.
function A = cell_format(varargin)
N = length(varargin);
m = max(cellfun(@(x)size(x,2),varargin));
A = cell(0,m);
for i=1:N
v = varargin{i};
[r,c] = size(v);
B = cell(r+1, m);
B{1,1} = inputname(i);
B(1,2:end) = {''};
if isnumeric(v)
B(2:end,1:c) = num2cell(v);
elseif iscell(v)
B(2:end,1:c) = v;
end
if(i>1)
A(end+1,:) = {''};
end
A = [A;B];
end
end
You will call it like this:
cell_format(B,C); % put the list of your variables in the function arguments

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