TeCoverageInterpolatorNN< T > Class Template Reference

Provides a Nearest Neighbour interpolation method for coverages. More...

#include <TeCoverageInterpolatorNN.h>

Inheritance diagram for TeCoverageInterpolatorNN< T >:

List of all members.

Public Member Functions
virtual void	setDecoder (TeCoverageDecoder< T > *decoder)
	Set the decoder.
virtual void	evaluate (const TeCoord2D &position, std::vector< double > &value)
	Retrieve the coverage value at an arbitrary location.
virtual void	evaluate (TeRaster &raster, const int rasterBand, const int coverageDimension, const TeBox &box=TeBox())
	Fill a region of a raster with interpolated coverage data.
Protected Member Functions
virtual TeGeomValuePair< T >	nearestNeighbour (const TeCoord2D &position, double radius=0)
	Find nearest generic geometry-value pair.
double	distanceToGeom (const TeCoord2D &position, TePoint point)
	Evaluate distance from a position to a point.
double	distanceToGeom (const TeCoord2D &position, TeLine2D line)
	Evaluate distance from a position to a line.
double	distanceToGeom (const TeCoord2D &position, TePolygon poly)
	Evaluate distance from a position to a polygon.
Protected Attributes
double	initialNeighbourhoodRadius_
	The initial radius used for interpolation.

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Detailed Description

template<class T>
class TeCoverageInterpolatorNN< T >

Provides a Nearest Neighbour interpolation method for coverages.

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Member Function Documentation

template<class T >

double TeCoverageInterpolatorNN< T >::distanceToGeom	(	const TeCoord2D &	position,
		TePoint	point
	)		[inline, protected]

Evaluate distance from a position to a point.

template<class T >

double TeCoverageInterpolatorNN< T >::distanceToGeom	(	const TeCoord2D &	position,
		TePolygon	poly
	)		[inline, protected]

Evaluate distance from a position to a polygon.

template<class T >

double TeCoverageInterpolatorNN< T >::distanceToGeom	(	const TeCoord2D &	position,
		TeLine2D	line
	)		[inline, protected]

Evaluate distance from a position to a line.

template<class T >

virtual void TeCoverageInterpolatorNN< T >::evaluate	(	const TeCoord2D &	position,
		std::vector< double > &	value
	)		[inline, virtual]

Retrieve the coverage value at an arbitrary location.

Retrieve the coverage value at an arbitrary location, using the

coverage decoder to access the coverage data.

This implementation looks for the generic geometry that is the

nearest neighbour of the position passed as parameter and returns the value associated to it.

Parameters:

position	the arbitrary location to be evaluated
the	value vector, to be filled by this method

Implements TeCoverageInterpolator< T >.

template<class T >

virtual void TeCoverageInterpolatorNN< T >::evaluate	(	TeRaster &	raster,
		const int	rasterBand,
		const int	coverageDimension,
		const TeBox &	box = TeBox()
	)		[inline, virtual]

Fill a region of a raster with interpolated coverage data.

Fill the pixels of a squared region of a raster with coverage

data. The value of each pixel coordinate is retrieved from the coverage, using an interpolation method (nearest neighbour).

Parameters:

raster	the raster to be filled with coverage data
rasterBand	the raster band to be filled
coverageDimension	the coverage dimension to be evaluated
box	defines the raster region to be filled

Implements TeCoverageInterpolator< T >.

template<class T >

virtual TeGeomValuePair<T> TeCoverageInterpolatorNN< T >::nearestNeighbour	(	const TeCoord2D &	position,
		double	radius = 0
	)		[inline, protected, virtual]

Find nearest generic geometry-value pair.

Retrieve the generic geometry value-pair that is the nearest

neighbour of the arbitrary location passed as parameter.

The radius parameter is used to specify the size of the

neighbourhood to be checked first. If no neighbours can be found, the radius is increased until at least one neighbour is found.

Parameters:

position	an arbitrary location
radius	the size of the neighbourhood to be checked initially.

template<class T >

virtual void TeCoverageInterpolatorNN< T >::setDecoder

(

TeCoverageDecoder< T > *

decoder

)

[inline, virtual]

Set the decoder.

Parameters:

decoder

the coverage decoder

Reimplemented from TeCoverageInterpolator< T >.

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Member Data Documentation

template<class T >

double TeCoverageInterpolatorNN< T >::initialNeighbourhoodRadius_ [protected]

The initial radius used for interpolation.

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

• E:/Projetos_Primeiro_Semestre_2012/TerraView/terralib/src/terralib/kernel/TeCoverageInterpolatorNN.h