convert each matrix of cells

I have 6 images. In each, I have identified a number of different special points on which to extract the attributes. (Because of the different cell)

In the first image I have 15 matrices, 3 x 3. And so there are the number of special points in each matrix image.

First, I want to transform the individual matrices of each cell into vectors. Then paste them into their own rows.

I know a simple matrix can be transformed into a vector with (:). But I can't work with that many cells.

[Stephen23]

Original question, with discussion and more information:

https://www.mathworks.com/matlabcentral/answers/498284-padcat-on-cells-with-nested-cells

Answer 1

[Image Analyst]

Try this:

s = load('gmag.mat')
Gmag = s.Gmag
% Get the size of Gmag.
[rows, columns] = size(Gmag)
% Loop over each cell of the Gmag cell array.
for col = 1 : columns
	for row = 1 : rows
		thisMatrix = Gmag{row, col}
		% Now do something with thisMatrix.
		% Careful!  Many of them are empty!
	end
end