how to convert cell array to a matrix?

I have a 5X4 matrix whose each element is a cell array. how to convert it to a simple matrix of elements.

[Bhowmik.U]

try if this works

X=cell{5,4} %your cell Y=cell2mat(X) % your desired matrix

[Stephen23]

@Zara Khan: what size would you expect the output to be? Would padding be acceptable to you? If so, with what value?

[KSSV]

Attach data instead of image snippet..have a look on Cell2mat

[Zara Khan]

I want to access this matrix as row by row

[Zara Khan]

Bhowmik U: No its not working as we cant use cell for cell arrays.

Answer 1

[Jos (10584)]

A = {[1 2 3],[4 5],6 ; [11 12],13,[] ; 21, [22 23], [24 25]}   % data
B = arrayfun(@(k) cat(2,A{k,:}),1:size(A,1),'un',0)   % make row vectors
C = padcat(B{:})   % pad vectors with NaNs

My function PADCAT can be downloaded here: https://uk.mathworks.com/matlabcentral/fileexchange/22909-padcat-varargin

[Zara Khan]

its nice. But how to use this codes when I dont have some predefined values. Like I have a code:

d{i,j}=diff(A{i,j});

Now I want to make this d as simple matrix instead of cell arrays. How I will use your above codes in this case?

[Jos (10584)]

use d instead of A to create B ... I am no sure if I understand your problem though ...

[Zara Khan]

How this will be when I am retrieving data from a loop ? If I use d instead of A then still I am using some predefined values.

[Jos (10584)]

At some point you will have a cell array with values, won't you? Then you can transform it as above.

[Zara Khan]

yes that can be done using the above code. But what about when I am storing values from loops?

[Jos (10584)]

This is all rather vague ... Can you show us some code, showing where you get stuck?