function out = gsp_filter(G, fi, signal, param)
%GSP_FILTER Filter function
% Usage: coeffs = gsp_filter(G, fi, signal);
% coeffs = gsp_filter(G, fi, signal, param);
%
% Input parameters:
% G : Graph structure.
% fi : Spectral filter.
% s : Graph signal to filters
% param : Optional parameters
% Output parameters:
% c : Filtered signal
%
% This function is a shortcut to the function GSP_FILTER_ANALYSIS.
% Please use the documentation of GSP_FILTER_ANALYSIS
%
%
% Url: https://epfl-lts2.github.io/gspbox-html/doc/filters/gsp_filter.html
% Copyright (C) 2013-2016 Nathanael Perraudin, Johan Paratte, David I Shuman.
% This file is part of GSPbox version 0.7.5
%
% This program is free software: you can redistribute it and/or modify
% it under the terms of the GNU General Public License as published by
% the Free Software Foundation, either version 3 of the License, or
% (at your option) any later version.
%
% This program is distributed in the hope that it will be useful,
% but WITHOUT ANY WARRANTY; without even the implied warranty of
% MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
% GNU General Public License for more details.
%
% You should have received a copy of the GNU General Public License
% along with this program. If not, see <http://www.gnu.org/licenses/>.
% If you use this toolbox please kindly cite
% N. Perraudin, J. Paratte, D. Shuman, V. Kalofolias, P. Vandergheynst,
% and D. K. Hammond. GSPBOX: A toolbox for signal processing on graphs.
% ArXiv e-prints, Aug. 2014.
% http://arxiv.org/abs/1408.5781
if nargin<4
param = struct;
end
out = gsp_filter_analysis(G, fi, signal, param);
end