reporting: change xTickLabels default to be first date, last date, and, if passed, the first date of the shade region. Accordingly, change the default of the tick rotation to be 0.

doc/dynare.texi

@@ -10836,6 +10836,7 @@ The names of the series contained in the @code{dseries} provided to
 the @ref{data} option. If empty, use all series provided to
 @ref{data} option. Default: @code{empty}
 
+@anchor{shade}
 @item shade, @code{dates}
 The date range showing the portion of the graph that should be
 shaded. Default: @code{none}
@@ -10876,18 +10877,21 @@ The boundary on the x-axis to display in the graph. Default: all
 @item xTicks, @code{NUMERICAL_VECTOR}
 Used only in conjunction with @ref{xTickLabels}, this option denotes
 the numerical position of the label along the x-axis. The positions
-begin at @math{1}. Default: set by Matlab/Octave.
+begin at @math{1}. Default: the indices associated with the first and
+last dates of the @code{dseries} and, if passed, the index associated
+with the first date of the @ref{shade} option.
 
 @anchor{xTickLabels}
 @item xTickLabels, @code{CELL_ARRAY_STRINGS}
 The labels to be mapped to the ticks provided by
-@ref{xTicks}. Default: the dates of the @code{dseries}
+@ref{xTicks}. Default: the first and last dates of the @code{dseries}
+and, if passed, the date first date of the @ref{shade} option.
 
 @item xTickLabelAnchor, @code{STRING}
 Where to anchor the x tick label. Default: @code{`south'}
 
 @item xTickLabelRotation, @code{DOUBLE}
-The amount to rotate the x tick labels by. Default: @code{45}
+The amount to rotate the x tick labels by. Default: @code{0}
 
 @item yAxisTight, @code{BOOLEAN}
 Use a tight y axis. If false, uses pgfplots @code{enlarge y limits} to

matlab/reports/@graph/graph.m

@@ -66,7 +66,7 @@ o.showZeroline = false;
 o.graphSize = [];
 o.xTicks = [];
 o.xTickLabels = {};
-o.xTickLabelRotation = 45;
+o.xTickLabelRotation = 0;
 o.xTickLabelAnchor = 'east';
 
 o.width = 6;

matlab/reports/@graph/writeGraphFile.m

@@ -56,12 +56,19 @@ if isempty(o.xrange)
 else
     dd = o.xrange;
 end
+stringsdd = strings(dd);
 
 fprintf(fid, '\\begin{axis}[%%\n');
 % set tick labels
 if isempty(o.xTickLabels)
-    x = 1:1:dd.ndat;
-    xTickLabels = strings(dd);
+    if ~isempty(o.shade)
+        x1 = find(strcmpi(date2string(o.shade(1)), stringsdd));
+        x = [1 x1 dd.ndat];
+        xTickLabels = [stringsdd(1) stringsdd(x1) stringsdd(end)];
+    else
+        x = [1 dd.ndat];
+        xTickLabels = [stringsdd(1) stringsdd(end)];
+    end
     fprintf(fid, 'xminorticks=true,\nyminorticks=true,\n');
 else
     fprintf(fid,'minor xtick,\n');
@@ -69,11 +76,12 @@ else
     xTickLabels = o.xTickLabels;
 end
 fprintf(fid, 'xticklabels={');
-for i = 1:length(x)
+xlen = length(x);
+for i = 1:xlen
     fprintf(fid,'%s,',lower(xTickLabels{i}));
 end
 fprintf(fid, '},\nxtick={');
-for i = 1:length(x)
+for i = 1:xlen
     fprintf(fid, '%d',x(i));
     if i ~= length(x)
         fprintf(fid,',');
@@ -159,9 +167,8 @@ for i=1:ne
 end
 
 if ~isempty(o.shade)
-    xTickLabels = strings(dd);
-    x1 = find(strcmpi(date2string(o.shade(1)), xTickLabels));
-    x2 = find(strcmpi(date2string(o.shade(end)), xTickLabels));
+    x1 = find(strcmpi(date2string(o.shade(1)), stringsdd));
+    x2 = find(strcmpi(date2string(o.shade(end)), stringsdd));
     assert(~isempty(x1) && ~isempty(x2), ['@graph.writeGraphFile: either ' ...
                         date2string(o.shade(1)) ' or ' date2string(o.shade(end)) ' is not in the date ' ...
                         'range of data selected.']);

tests/reporting/runDynareReport.m

@@ -239,8 +239,6 @@ rep = rep.addGraph('title', 'Equilibrium World Real Food Price', ...
                    'xrange', prange, ...
                    'shade', srange, ...
                    'showLegend', true, ...
-                   'xTicks', [1,5,10,15,find(srange(1)==prange),length(prange)], ...
-                   'xTickLabels',{startpoint{:},'2008Q1','2009Q2','2010Q3',shaded{:}, endpoint{:}},...
                    'xTickLabelRotation', 0);
 rep = rep.addSeries('data', db_q{'LRPFOOD_BAR_WORLD'}, ...
                     'graphLineColor', 'blue', ...