--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/m-toolbox/classes/@timespan/update_struct.m	Wed Nov 23 19:22:13 2011 +0100
@@ -0,0 +1,81 @@
+% UPDATE_STRUCT update the input structure to the current ltpda version
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%
+% FUNCTION:    update_struct
+%
+% DESCRIPTION: UPDATE_STRUCT update the input structure to the current
+%              ltpda version
+%
+% CALL:        obj_struct = update_struct(obj_struct, version_str);
+%
+% VERSION:     $Id: update_struct.m,v 1.13 2011/03/28 12:45:44 hewitson Exp $
+%
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+
+function obj_struct = update_struct(obj_struct, version_str)
+
+  % get only the version string without the MATLAB version and convert to double
+  ver = utils.helper.ver2num(strtok(version_str));
+
+  % update from version 1.0
+  if ver <= utils.helper.ver2num('1.0')
+    % hist
+    if ~isfield(obj_struct, 'hist')
+      if isfield(obj_struct, 'class')
+        cn = obj_struct.class;
+      else
+        cn = 'unknown class. updater';
+      end
+      ii = minfo('update_struct', cn, 'ltpda', '', ...
+                 '$Id: update_struct.m,v 1.13 2011/03/28 12:45:44 hewitson Exp $', ...
+                 {'Default'}, plist(), 0, 0);
+      obj_struct.hist = history(time().utc_epoch_milli, ii, obj_struct.plist);
+    end
+    % startT
+    if ~isfield(obj_struct, 'startT') && isfield(obj_struct, 'start')
+      obj_struct.startT = obj_struct.start;
+    elseif ~isfield(obj_struct, 'startT')
+      obj_struct.startT = time(0);
+    end
+    % endT
+    if ~isfield(obj_struct, 'endT') && isfield(obj_struct, 'end')
+      obj_struct.endT = obj_struct.end;
+    elseif ~isfield(obj_struct, 'endT')
+      obj_struct.endT = time(0);
+    end
+  end
+
+  % update from version 1.9.3
+  if ver <= utils.helper.ver2num('1.9.3')
+    % created
+    if isfield(obj_struct, 'created')
+      obj_struct = rmfield(obj_struct, 'created');
+    end
+    % creator
+    if isfield(obj_struct, 'creator')
+      obj_struct = rmfield(obj_struct, 'creator');
+    end
+  end
+
+  % update from version 2.3
+  if ver <= utils.helper.ver2num('2.3')
+    % interval
+    if isfield(obj_struct, 'interval')
+      obj_struct = rmfield(obj_struct, 'interval');
+    end
+  end
+
+  % update from version 2.4
+  if ver <= utils.helper.ver2num('2.4')
+    % timeformat
+    if isfield(obj_struct, 'timeformat')
+      obj_struct = rmfield(obj_struct, 'timeformat');
+    end
+    % timezone
+    if isfield(obj_struct, 'timezone')
+      obj_struct = rmfield(obj_struct, 'timezone');
+    end
+  end
+
+end
+