Trim array by Guilherme Coco Beltramini

Remove columns and rows that are empty or that contain only NaN's in the input arrays (trim, array, nan)

trim_array(action,varargin)

Recursive version of isempty() for cells and structures by Kevin Bartlett

Returns true for cell arrays/structures that are not empty, but have only empty cells/fields. (empty, isempty, cell)

isemptyr(X)

UNEMPTY by Andreas

Sets empty fields in a structure to a defined value. (structures, cell arrays, utilities)

unempty(S,field,value)