manipulating three dimensional cell arrays

I have a three dimensional cell array data as follows;

val(:,:,1) = 

      [3x4 double]

val(:,:,2) = 

      [3x4 double]

val(:,:,3) = 

      [4x4 double]

val(:,:,4) = 

      [5x4 double]

val(:,:,5) = 

      [5x4 double]

I need to remove sub-arrays whose rows number below 4. In this case, val(:,:,1) and val(:,:,2) need to be removed. So "data" should be;

val(:,:,1) = 
      [4x4 double]
val(:,:,2) = 
      [5x4 double]
val(:,:,3) = 
      [5x4 double]

How can I perform this editing?

Answer 1

[Stephen23]

Use cellfun and indexing. This will remove along the third dimension:

out = val(:,:,cellfun('size',val,1)>=4)