remove unnecessary assignments from dseries constructor

src/@dseries/dseries.m

@@ -50,12 +50,6 @@ methods
         switch nargin
           case 0
             % Return empty object.
-            o.data  = [];
-            o.name  = {};
-            o.tex   = {};
-            o.dates = dates();
-            o.ops   = {};
-            o.tags  = struct();
             return
           case 1
             if isdates(varargin{1})
@@ -64,24 +58,14 @@ methods
                     error('dseries:WrongInputArguments', 'Input (identified as a dates object) must be non empty!');
                   case 1
                     % Create an empty dseries object with an initial date.
-                    o.data  = [];
-                    o.name  = {};
-                    o.tex   = {};
                     o.dates = varargin{1};
-                    o.ops   = {};
-                    o.tags  = struct();
                   otherwise
                     error('dseries:WrongInputArguments', 'Input (identified as a dates object) must have a unique element!');
                 end
                 return
             elseif ischar(varargin{1})
-                [init, data, varlist, tex, ops, tags] = load_data(varargin{1});
-                o.data = data;
-                o.name = varlist;
+                [init, o.data, o.name, o.tex, o.ops, o.tags] = load_data(varargin{1});
                 o.dates = init:init+(nobs(o)-1);
-                o.tex = tex;
-                o.ops = ops;
-                o.tags = tags;
             elseif ~isoctave() && ~matlab_ver_less_than('8.2') && istable(varargin{1})
                 % It is assumed that the dates are in the first column.
                 o.name = varargin{1}.Properties.VariableNames(2:end);
@@ -89,14 +73,12 @@ methods
                 o.data = varargin{1}{:,2:end};
                 o.dates = dates(varargin{1}{1,1}{1})+(0:size(varargin{1}, 1)-1);
                 o.ops = cell(length(o.name), 1);
-                o.tags = struct();
             elseif isnumeric(varargin{1}) && isequal(ndims(varargin{1}),2)
                 o.data = varargin{1};
                 o.name = default_name(vobs(o));
                 o.tex = name2tex(o.name);
                 o.dates = dates(1,1):dates(1,1)+(nobs(o)-1);
                 o.ops = cell(length(o.name), 1);
-                o.tags = struct();
             elseif isstruct(varargin{1})
                 o = struct2dseries(varargin{1});
             end
@@ -105,26 +87,16 @@ methods
                 % Instantiate dseries object with a data file and force the initial date to
                 % be as given by the second input argument (initial period represented
                 % with a dates object).
-                [~, data, varlist, tex, ops, tags] = load_data(varargin{1});
-                o.data = data;
-                o.name = varlist;
+                [~, o.data, o.name, o.tex, o.ops, o.tags] = load_data(varargin{1});
                 o.dates = varargin{2}:varargin{2}+(nobs(o)-1);
-                o.tex = tex;
-                o.ops = ops;
-                o.tags = tags;
                 return
             end
             if isequal(nargin,2) && ischar(varargin{1}) && ischar(varargin{2}) && isdate(varargin{2})
                 % Instantiate dseries object with a data file and force the initial date to
                 % be as given by the second input argument (initial period represented with a
                 % string).
-                [~, data, varlist, tex, ops, tags] = load_data(varargin{1});
-                o.data = data;
-                o.name = varlist;
+                [~, o.data, o.name, o.tex, o.ops, o.tags] = load_data(varargin{1});
                 o.dates = dates(varargin{2}):dates(varargin{2})+(nobs(o)-1);
-                o.tex = tex;
-                o.ops = ops;
-                o.tags = tags;
                 return
             end
             a = varargin{1};