Extract data from cell array

I have a Y array (46x1 cell). I want extract four cells (3,4,5 and 9). Each cell is composed 1x728. How I can extract the data from the cells. Thanks

Answer 1

[Azzi Abdelmalek]

Look at this example

y={rand(1,3) rand(1,3) rand(1,3) rand(1,3) rand(1,3)}
y([2 3])

You can have

cell2mat(y([2 3]))

or

cell2mat(y([2 3])')

For your case:

y([3 4 5 9])

[Bruno]

Thanks for your help, I want extract data (3,4,5 and 9) from the cells and concatenate and plot. Thanks

[Azzi Abdelmalek]

The answer is above:

out=cell2mat(y([3 4 5 9]))
plot(out)

[Ted]

If each cell contains a 2D matrix and the size of matrices are different, is there an easy way to re-format the values in the cell array into a 1D mat-array?

I guess the hard way will be to reshape the matrix within each cell into a 1D array and then, do cell2mat to concatenate them together.

I am wondering whether there is an easier way to do?

[Moussa Bendjedia]

Merci Mr Azzi Abdelmalek from Moussa of Sétif