src/@dates/ndat.m

 function s = ndat(o)
 
-% Given a one element dates object, returns a string with the formatted date.
+% Returns the number of element in a dates object.
 %
 % INPUTS
 % - o  [dates]
 %
 % OUTPUTS
 % - s  [integer]
+%
+% REMARKS
+% This method is deprecated, use length() instead
 
-% Copyright © 2015-2022 Dynare Team
+% Copyright © 2015-2024 Dynare Team
 %
 % This code is free software: you can redistribute it and/or modify
 % it under the terms of the GNU General Public License as published by

src/@dseries/plot.m

 function h = plot(o, varargin)
 
 % Overloads Matlab/Octave's plot function for dseries objects.
+%
+% INPUTS:
+% - o            [dseries]   object containing n time series to be plotted in the same figure.
+% - varargin     [cell]      optionally a second dseries object, and some options to be passed to the plot command.
+%
+% OUTPUTS:
+% - h            [handle]    plot handle.
+%
+% REMARKS:
+% [1] If  n > 1 , additional arguments cannot be passed to the plot function for customization. However, the plot can be modified afterward using the plot handle.
+% [2] If two dseries objects are provided, it is assumed that both contain only one observation (i.e.,  n = 1 ). The function will then plot the second variable against the first.
 
-% Copyright © 2013-2017 Dynare Team
+
+% Copyright © 2013-2025 Dynare Team
 %
 % This file is part of Dynare.
 %
@@ -55,23 +67,9 @@ switch ndseries
         hh = plot(o.data);
     end
     axis tight;
-    id = get(gca,'XTick');
-    if isequal(id(1),0)
-        dates = strings([o.dates(1)-1,o.dates(id(2:end))]);
-        skip_relabeling=0;
-    else
-        ID = id(find(isint(id)));
-        if any(ID<o.dates(1).double) || any(ID>o.dates(end).double)
-            skip_relabeling=1; %hold on was used so that axis tight did not restrict current xlim to dseries used.
-        else
-            set(gca,'XTick',ID);
-            dates = strings(o.dates(ID));
-            skip_relabeling=0;
-        end
-    end
-    if ~skip_relabeling
-        set(gca,'XTickLabel',dates);
-    end
+    id = get(gca, 'XTick');
+    Dates = strings(o.dates(id));
+    set(gca,'XTickLabel', Dates);
   case 2
     [o0, o1] = align(o, varargin{1});
     if isequal(nvariables,1)
@@ -89,4 +87,4 @@ end
 
 if nargout
     h = hh;
-end
\ No newline at end of file
+end