utc time handling

DateTime.m

@@ -29,7 +29,15 @@
     methods
         function this = DateTime(varargin)
             if numel(varargin)==1 && isa(varargin{1},'java.util.Date')
-                    this.serialDate=-java.util.Date().getTimezoneOffset()/(60*24)+datenum(char(varargin{1}.toGMTString));
+                    df = java.text.SimpleDateFormat( 'yyyy-MM-dd HH:mm:ss' );
+                    tz = java.util.TimeZone.getTimeZone ('UTC');
+                    df.setTimeZone( tz );
+                    this.serialDate=datenum(char(df.format(varargin{1})));
+                    %this.serialDate = datenum(char(varargin{1}.toString)) - varargin{1}.getTimezoneOffset/60/24;
+                    %disp ( [ char(varargin{1}.toGMTString), '---' char(varargin{1}.toString ), '---', char(varargin{1}.toLocaleString )]);
+                    %if (varargin{1}.getTimezoneOffset)~=-120
+                    %    disp(1);
+                    %end
             else
                 this.serialDate=datenum(varargin{:});
             end
@@ -215,8 +223,8 @@ function  disp(this)
         function this = min(this,varargin)
             this.serialDate = min(this.serialDate,varargin{:});
         end
-        function out = datestr(this)
-            out = datestr(this.serialDate);
+        function out = datestr(this,varargin)
+            out = datestr(this.serialDate,varargin{:});
         end
 
 

WriteYaml.m

@@ -63,6 +63,8 @@ function WriteYaml(filename, data)
 %
 %
 function result = scan_datetime(r)
+    % datestr 30..in ISO8601 format
+    %java.text.SimpleDateFormat('yyyymmdd'T'HH:mm:ssz" );
     result = java.util.Date(datestr(r));
 end
 

extras/TimeVals2Cell.m

@@ -1,7 +1,11 @@
 function s = TimeVals2Cell(time,datavalues,header)
 % creates a typical struct with field named by header. Values are cell of
 % date and vals.
-
+% synopsis:
+%  s = TimeVals2Cell(time,datavalues,header)
+if ~iscell(header)
+    header = {header};
+end
 
 for i=1:numel(header)
     s.(header{i}) = [num2cell(DateTime(time)) num2cell(datavalues(:,i))];