BrayCurtisDistance.h

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00001 /*
00002  * This program is free software; you can redistribute it and/or modify
00003  * it under the terms of the GNU General Public License as published by
00004  * the Free Software Foundation; either version 3 of the License, or
00005  * (at your option) any later version.
00006  *
00007  * Written (W) 2008-2009 Christian Gehl
00008  * Copyright (C) 2008-2009 Fraunhofer Institute FIRST
00009  */
00010 
00011 #ifndef _BRAYCURTISDISTANCE_H___
00012 #define _BRAYCURTISDISTANCE_H___
00013 
00014 #include "lib/common.h"
00015 #include "distance/SimpleDistance.h"
00016 #include "features/SimpleFeatures.h"
00017 
00029 class CBrayCurtisDistance: public CSimpleDistance<float64_t>
00030 {
00031     public:
00033         CBrayCurtisDistance();
00034 
00040         CBrayCurtisDistance(CSimpleFeatures<float64_t>* l, CSimpleFeatures<float64_t>* r);
00041         virtual ~CBrayCurtisDistance();
00042 
00049         virtual bool init(CFeatures* l, CFeatures* r);
00050 
00052         virtual void cleanup();
00053 
00059         virtual bool load_init(FILE* src);
00060 
00066         virtual bool save_init(FILE* dest);
00067 
00072         virtual EDistanceType get_distance_type() { return D_BRAYCURTIS; }
00073 
00078         virtual const char* get_name() const { return "Bray-Curtis distance"; }
00079 
00080     protected:
00084         virtual float64_t compute(int32_t idx_a, int32_t idx_b);
00085 };
00086 
00087 #endif /* _BRAYCURTISDISTANCE_H___ */

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