ChiScoreLog.h

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/**
 * \file IMP/saxs/ChiScoreLog.h \brief scoring with log intensity
 *
 * Copyright 2007-2013 IMP Inventors. All rights reserved.
 *
 */

#ifndef IMPSAXS_CHI_SCORE_LOG_H
#define IMPSAXS_CHI_SCORE_LOG_H

#include <IMP/base/warning_macros.h>

#include <IMP/saxs/saxs_config.h>
#include "Profile.h"

IMPSAXS_BEGIN_NAMESPACE

/**
   chi scoring on log intensities
*/
class IMPSAXSEXPORT ChiScoreLog {
 public:
  Float compute_score(const Profile* exp_profile,
                      const Profile* model_profile,
                      bool use_offset = false) const;

  Float compute_score(const Profile* exp_profile,
                      const Profile* model_profile,
                      Float min_q, Float max_q) const;

  Float compute_scale_factor(const Profile* exp_profile,
                             const Profile* model_profile,
                             Float offset = 0.0) const;

  Float compute_offset(const Profile* exp_profile,
                       const Profile* model_profile) const {
    // not implemented as no straightforward solution to the equations
    IMP_UNUSED(exp_profile);
    IMP_UNUSED(model_profile);
    return 0.0;
  }

};

IMPSAXS_END_NAMESPACE

#endif /* IMPSAXS_CHI_SCORE_LOG_H */