statistics.hpp

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/* Copyright (c) 2026 Otto Link. Distributed under the terms of the GNU General
   Public License. The full license is in the file LICENSE, distributed with
   this software. */
 
#pragma once
 
#include "highmap/array.hpp"
 
namespace hmap
{
enum NormalizationMethod : int
{
  NM_MIN_MAX,     
  NM_STANDARDIZE, 
  NM_ROBUST,      
};
 
float autocorr_length_scale(const Array &array, float max_lag_fraction = 0.4f);
 
glm::vec2 autocorr_length_scale_axial(const Array &array,
                                      float        max_lag_fraction = 0.4f);
 
Array detrend_reg(const Array &array);
 
void normalize(Array &array, NormalizationMethod method);
 
Array normalized(const Array &array, NormalizationMethod method);
 
float variance(const Array &array, float *p_mean = nullptr);
 
} // namespace hmap