ViewshedUtils Class Reference

Class that contains mostly static helper functions. More...

#include <viewshedutils.h>

Static Public Member Functions
static void	saveToCsv (std::vector< DataTriplet > data, std::string header, std::string fileName)
	Save data vector of DataTriplets as CSV file.
static void	saveToCsv (std::vector< std::string > rows, std::string header, std::string fileName)
	Save arbitrary rows as CSV file.
static std::vector< DataTriplet >	distanceElevation (std::shared_ptr< AbstractLoS > los)
	Extracts triplets of distance, elevation and target point (boolean) from provided LoS.
static std::vector< std::pair< double, double > >	rasterCoordinates (std::shared_ptr< std::vector< LoSNode > > los, LoSNode poi)
static double	earthDiameter (OGRSpatialReference crs)
	Extract Earth's diameter from ellipsoid associated with provided coordinate reference system.
static bool	validateRaster (std::shared_ptr< SingleBandRaster > r1, std::string &error)
	Validate the raster for viewshed calculation, checks if it fulfills all the requirements.
static bool	compareRasters (std::shared_ptr< SingleBandRaster > r1, std::shared_ptr< SingleBandRaster > r2, std::string &error)
	Checks if the two rasters have the same properties and that one can be used visibility calculation mask for the second raster, which should be raster of digital surface model.
static std::shared_ptr< ViewshedAlgorithms >	allAlgorithms ()
	Returns list of all implemented viewshed indices as algorithms to be used in viewshed of inverse viewshed calculation.
static std::shared_ptr< ViewshedAlgorithms >	allAlgorithms (double invisibleValue)
	Returns list of all implemented viewshed indices as algorithms to be used in viewshed of inverse viewshed calculation. Allows setting specific value to be used in some algorithms as invisible value.
static bool	doubleEqual (double a, double b, double epsilon=4 *std::numeric_limits< double >::epsilon())

Detailed Description

Class that contains mostly static helper functions.

Member Function Documentation

allAlgorithms() [1/2]

std::shared_ptr< ViewshedAlgorithms > ViewshedUtils::allAlgorithms ( )

static

Returns list of all implemented viewshed indices as algorithms to be used in viewshed of inverse viewshed calculation.

Returns

std::shared_ptr<std::vector<std::shared_ptr<AbstractViewshedAlgorithm>>>

allAlgorithms() [2/2]

std::shared_ptr< ViewshedAlgorithms > ViewshedUtils::allAlgorithms ( double invisibleValue )

static

Returns list of all implemented viewshed indices as algorithms to be used in viewshed of inverse viewshed calculation. Allows setting specific value to be used in some algorithms as invisible value.

Parameters

invisibleValue

Returns

std::shared_ptr<std::vector<std::shared_ptr<AbstractViewshedAlgorithm>>>

compareRasters()

bool ViewshedUtils::compareRasters ( std::shared_ptr< SingleBandRaster > r1, std::shared_ptr< SingleBandRaster > r2, std::string & error )

static

Checks if the two rasters have the same properties and that one can be used visibility calculation mask for the second raster, which should be raster of digital surface model.

Parameters

r1
r2
error	Returned error message.

Returns

true

false

distanceElevation()

std::vector< DataTriplet > ViewshedUtils::distanceElevation ( std::shared_ptr< AbstractLoS > los )

static

Extracts triplets of distance, elevation and target point (boolean) from provided LoS.

Parameters

los

Returns

std::vector<DataTriplet>

earthDiameter()

double ViewshedUtils::earthDiameter ( OGRSpatialReference crs )

static

Extract Earth's diameter from ellipsoid associated with provided coordinate reference system.

Parameters

crs

Returns

double

saveToCsv() [1/2]

void ViewshedUtils::saveToCsv ( std::vector< DataTriplet > data, std::string header, std::string fileName )

static

Save data vector of DataTriplets as CSV file.

Parameters

data
header	formatted header of CSV.
fileName	filename with path to store data into.

saveToCsv() [2/2]

void ViewshedUtils::saveToCsv ( std::vector< std::string > rows, std::string header, std::string fileName )

static

Save arbitrary rows as CSV file.

Parameters

rows	formatted rows of the CSV, "\n" is added automatically at the end of string.
header	formatted header of CSV.
fileName	filename with path to store data into.

validateRaster()

bool ViewshedUtils::validateRaster ( std::shared_ptr< SingleBandRaster > r1, std::string & error )

static

Validate the raster for viewshed calculation, checks if it fulfills all the requirements.

Parameters

r1
error	Returned error message.

Returns

true

false

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The documentation for this class was generated from the following files:

• /home/runner/work/cpp-viewshed-library/cpp-viewshed-library/include/viewshed/viewshedutils.h
• /home/runner/work/cpp-viewshed-library/cpp-viewshed-library/src/library/utils/viewshedutils.cpp