GeoRasterTableFunctions.cpp File Reference

#include <cmath>
#include <vector>
#include <tbb/parallel_for.h>
#include <tbb/task_arena.h>
#include "Shared/TableFunctionsCommon.hpp"
#include "Shared/math_consts.h"

Include dependency graph for GeoRasterTableFunctions.cpp:

This graph shows which files directly or indirectly include this file:

Go to the source code of this file.

Functions
std::vector< double >	generate_1d_gaussian_kernel (const int64_t fill_radius, double sigma)

Variables
const size_t	max_inputs_per_thread = 1000000L
const size_t	max_temp_output_entries = 200000000L

Function Documentation

std::vector<double> generate_1d_gaussian_kernel	(	const int64_t	fill_radius,
		double	sigma
	)

Definition at line 390 of file GeoRasterTableFunctions.cpp.

References M_PI.

Referenced by GeoRaster< T, Z >::fill_bins_from_gaussian_neighborhood().

                                                                                       {
  const int64_t kernel_size = fill_radius * 2 + 1;
  std::vector<double> gaussian_kernel(kernel_size);
  const double expr = 1.0 / (sigma * sqrt(2.0 * M_PI));
  for (int64_t kernel_idx = -fill_radius; kernel_idx <= fill_radius; ++kernel_idx) {
    gaussian_kernel[kernel_idx + fill_radius] =
        expr * exp((kernel_idx * kernel_idx) / (-2.0 * (sigma * sigma)));
  }
  return gaussian_kernel;
}

Here is the caller graph for this function:

Variable Documentation

const size_t max_inputs_per_thread = 1000000L

Definition at line 27 of file GeoRasterTableFunctions.cpp.

Referenced by GeoRaster< T, Z >::compute(), compute_table_function_col_chunk_stats(), GeoRaster< T, Z >::GeoRaster(), get_column_mean(), get_column_metadata(), get_column_min_max(), get_column_stats(), and get_column_std_dev().

const size_t max_temp_output_entries = 200000000L

Definition at line 28 of file GeoRasterTableFunctions.cpp.

Referenced by GeoRaster< T, Z >::computeParallelImpl().