Struct Field to Matrix large dataset

I have a strucure which has a value of the field, 20000x5x100, what it means that it has a set of 100 matrices which has, 20000 rows and 5 columns. How do I convert it to a 2000000x5 matrix printing all the 100 sets in the sequence it has been saved in the structure?

Answer 1

[Dave B]

You can use reshape but you may wish to use permute first to get things in the right order:

a=cat(3,[1 2;3 4],[5 6; 7 8])

a = 
a(:,:,1) =

     1     2
     3     4


a(:,:,2) =

     5     6
     7     8

reshape(permute(a,[1 3 2]),[],2)

ans = 4×2

1 2 3 4 5 6 7 8