Fixed set_datetick() axis truncation problem

Users must now specify ‘keepticks’or ‘keeplimits’ options if desired.

Author: piermorel

.gitignore

@@ -2,3 +2,4 @@
 gramm_test.m
 gramm cheat sheet.numbers
 .DS_Store
+paper/figure.ai

@gramm/draw.m

@@ -1176,7 +1176,8 @@
         %Do the datetick
         if ~isempty(obj.datetick_params)
             for dtk=1:length(obj.datetick_params)
-                datetick(ca,obj.datetick_params{dtk}{:},'keepticks');
+                %Previously used 'keepticks' by default  which could cause a truncation of the axes
+                datetick(ca,obj.datetick_params{dtk}{:});
             end
         end
 

@gramm/set_datetick.m

@@ -2,7 +2,9 @@
 %set_datetick Specify that the x axis has dates
 %
 % This function can receive the same optional arguments as the
-% datetick() function of matlab
+% datetick() function of matlab. In gramm versions before March 2018 the
+% behavior was to force the 'keepticks' options. Now the options
+% 'keepticks' or 'keeplimits' must be specified.
 
 %This way we can handle multiple calls to set_datetick
 for obj_ind=1:numel(obj)