vlt.data.isfullfield

  ISFULLFIELD - is there a field (or field and subfield) of a structure with a given name?

  [B, VALUE] = vlt.data.isfullfield(A, FIELD)

  Examines the structure A to see if A.FIELD can be evaluated. If so, B is 1 and the VALUE is
  returned in VALUE. Otherwise, B is 0. If B is 0, then VALUE is empty.

  See also: vlt.data.fieldsearch 

  Example:
      A = struct('a',struct('sub1',1,'sub2',2),'b',5);
      [b,value] = vlt.data.isfullfield(A, 'a.sub1') % returns b==1 and value==1
      [b2,value2] = vlt.data.isfullfield(A, 'a.sub3') % returns b==0 and value==[]