sgwt_delta : Return vector with one nonzero entry equal to 1. function r=sgwt_delta(N,j) Returns length N vector with r(j)=1, all others zero Inputs : N - length of vector j - position of "delta" impulse Outputs: r - returned vector
0001 % sgwt_delta : Return vector with one nonzero entry equal to 1. 0002 % 0003 % function r=sgwt_delta(N,j) 0004 % 0005 % Returns length N vector with r(j)=1, all others zero 0006 % 0007 % Inputs : 0008 % N - length of vector 0009 % j - position of "delta" impulse 0010 % 0011 % Outputs: 0012 % r - returned vector 0013 0014 % This file is part of the SGWT toolbox (Spectral Graph Wavelet Transform toolbox) 0015 % Copyright (C) 2010, David K. Hammond. 0016 % 0017 % The SGWT toolbox is free software: you can redistribute it and/or modify 0018 % it under the terms of the GNU General Public License as published by 0019 % the Free Software Foundation, either version 3 of the License, or 0020 % (at your option) any later version. 0021 % 0022 % The SGWT toolbox is distributed in the hope that it will be useful, 0023 % but WITHOUT ANY WARRANTY; without even the implied warranty of 0024 % MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 0025 % GNU General Public License for more details. 0026 % 0027 % You should have received a copy of the GNU General Public License 0028 % along with the SGWT toolbox. If not, see <http://www.gnu.org/licenses/>. 0029 0030 function r=sgwt_delta(N,j) 0031 r=zeros(N,1); 0032 r(j)=1; 0033