Added dynSeries::lead method.
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function us = lead(ts,p) % --*-- Unitary tests --*--
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%@info:
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%! @deftypefn {Function File} {@var{us} =} lead (@var{ts})
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%! @anchor{lag}
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%! @sp 1
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%! Computes leaded time series.
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%! @sp 2
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%! @strong{Inputs}
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%! @sp 1
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%! @table @var
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%! @item ts
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%! Dynare time series object, instantiated by @ref{dynSeries}
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%! @end table
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%! @sp 2
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%! @strong{Outputs}
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%! @sp 1
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%! @table @var
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%! @item us
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%! Dynare time series object with transformed data field.
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%! @end table
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%! @end deftypefn
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%@eod:
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% Copyright (C) 2013 Dynare Team
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%
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% This file is part of Dynare.
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%
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% Dynare is free software: you can redistribute it and/or modify
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% it under the terms of the GNU General Public License as published by
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% the Free Software Foundation, either version 3 of the License, or
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% (at your option) any later version.
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%
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% Dynare is distributed in the hope that it will be useful,
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% but WITHOUT ANY WARRANTY; without even the implied warranty of
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% MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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% GNU General Public License for more details.
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%
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% You should have received a copy of the GNU General Public License
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% along with Dynare. If not, see <http://www.gnu.org/licenses/>.
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% Set default number of leads
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if nargin<2
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p = 1;
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end
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if p<=0
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error('dynSeries::lead: Second input argument must be strictly positive! Use lag method instead.')
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end
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% Copy of ts dynSeries object
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us = ts;
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% Update data member
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us.data = [ ts.data(p+1:end,:); NaN(p,ts.vobs);];
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for i=1:ts.vobs
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us.name(i) = {[ 'lead(' ts.name{i} ',' int2str(p) ')']};
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us.tex(i) = {[ ts.tex{i} '_{+' int2str(p) '}']};
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end
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%@test:1
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%$ t = zeros(4,1);
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%$
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%$ try
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%$ data = transpose(0:1:50);
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%$ ts = dynSeries(data,'1950Q1');
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%$ a = ts.lead;
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%$ b = ts.lead.lead;
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%$ c = lead(ts,2);
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%$ t(1) = 1;
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%$ catch
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%$ t = 0;
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%$ end
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%$
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%$ if length(t)>1
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%$ DATA = [transpose(1:50); NaN(1,ts.vobs)];
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%$ t(2) = dyn_assert(a.data,DATA,1e-15);
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%$ DATA = [transpose(2:50); NaN(2,ts.vobs)];
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%$ t(3) = dyn_assert(b.data,DATA,1e-15);
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%$ t(4) = dyn_assert(b.data,c.data,1e-15);
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%$ end
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%$
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%$ T = all(t);
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%@eof:1
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@ -75,14 +75,14 @@ switch S(1).type
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if length(S)>1 && isequal(S(2).type,'()') && isempty(S(2).subs)
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S = shiftS(S);
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end
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case 'lag'
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case {'lag','lead'}
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if length(S)>1 && isequal(S(2).type,'()')
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if isempty(S(2).subs)
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B = feval(S(1).subs,A);
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S = shiftS(S);
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else
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if length(S(2).subs{1})>1
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error('dynSeries::subsref: lag method admits no more than one argument (default value is one)!')
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error(['dynSeries::subsref: ' S(1).subs{1} ' method admits no more than one argument (default value is one)!'])
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end
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B = feval(S(1).subs,A,S(2).subs{1})
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S = shiftS(S);
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