PPCA.h

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00001 /*
00002     LoopTK: Protein Loop Kinematic Toolkit
00003     Copyright (C) 2007 Stanford University
00004 
00005     This program is free software; you can redistribute it and/or modify
00006     it under the terms of the GNU General Public License as published by
00007     the Free Software Foundation; either version 2 of the License, or
00008     (at your option) any later version.
00009 
00010     This program is distributed in the hope that it will be useful,
00011     but WITHOUT ANY WARRANTY; without even the implied warranty of
00012     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
00013     GNU General Public License for more details.
00014 
00015     You should have received a copy of the GNU General Public License along
00016     with this program; if not, write to the Free Software Foundation, Inc.,
00017     51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
00018 */
00019 
00020 #ifndef PPCA_H
00021 #define PPCA_H
00022 #include "PLibraries.h"
00023 #include "gsl/gsl_math.h"
00024 #include "gsl/gsl_matrix.h"
00025 #include "gsl/gsl_vector.h"
00026 #include "gsl/gsl_eigen.h"
00027 class PPCA{
00028     public:
00029     static Vector3 getMean(Vector3 *points, int number);
00030     static void normalize( Vector3 mean, Vector3 *data, Vector3 **target, int number);
00031     static void getCovariance(gsl_matrix *covm, Vector3 *data, int number);
00032     static void getEigenvector(gsl_matrix *matrix, gsl_vector *eigenvalues, gsl_matrix *eigenvector);
00033     static void getPrincipalComponent(gsl_vector *pc, Vector3 *points, int number);
00034     static void getPrincipalComponent(gsl_vector *pc, vector<Vector3*> *points);
00035 };
00036 #endif

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