(octave.info)Processing Data in Structures

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6.1.5 Processing Data in Structures
-----------------------------------

The simplest way to process data in a structure is within a ‘for’ loop
(Note: Looping Over Structure Elements).  A similar effect can be
achieved with the ‘structfun’ function, where a user defined function is
applied to each field of the structure.  Note: structfun.

   Alternatively, to process the data in a structure, the structure
might be converted to another type of container before being treated.

 -- : C = struct2cell (S)
     Create a new cell array from the objects stored in the struct
     object.

     If F is the number of fields in the structure, the resulting cell
     array will have a dimension vector corresponding to ‘[F size(S)]’.
     For example:

          s = struct ("name", {"Peter", "Hannah", "Robert"},
                     "age", {23, 16, 3});
          c = struct2cell (s)
             ⇒ c = {2x1x3 Cell Array}
          c(1,1,:)(:)
             ⇒
                {
                  [1,1] = Peter
                  [2,1] = Hannah
                  [3,1] = Robert
                }
          c(2,1,:)(:)
             ⇒
                {
                  [1,1] = 23
                  [2,1] = 16
                  [3,1] = 3
                }

     See also: Note: cell2struct, *note fieldnames:
     XREFfieldnames.