te::se::Recode Class Reference

Transformation of discrete values to other values. More...

#include <Recode.h>

Inheritance diagram for te::se::Recode:

Public Types
typedef void	ReturnType
typedef Visitor	VisitorType

Public Member Functions
virtual ReturnType	accept (VisitorType &guest) const =0
	It call the visit method from the guest object. More...
const std::string &	getFallbackValue () const
void	setFallbackValue (const std::string &v)
Initializer Methods
Methods related to instantiation and destruction.
	Recode ()
	It initializes a new Recode. More...
	~Recode ()
	Destructor. More...
	Recode (const Recode &rhs)
	Copy constructor. More...
virtual Recode *	clone () const
	It returns a clone of this object. More...
void	setLookupValue (ParameterValue *v)
void	add (MapItem *m)
std::vector< MapItem * >	getMapItems () const

Protected Attributes
std::string	m_fallbackValue
	The value of the fallbackValue attribute is used as a default value, if the SE implementation does not support the function. If the implementation supports the function, then the result value is determined by executing the function. (Mandatory) More...

Private Attributes
ParameterValue *	m_lookupValue
	Mandatory. More...
std::vector< MapItem * >	m_mapItems
	Mandatory. More...

Detailed Description

Transformation of discrete values to other values.

The Symbology encoding specification defines three pre-defined functions for transforming raw data:

• Categorization: The transformation of continuous values to distinct values. This is for example needed to generate choropleth maps from continuous attributes. Another example would be the stepwise selection of different text heights or line widths in dependence from such an attribute;
• Interpolation: Transformation of continuous values by a function defined on a number of nodes. This is used to adjust the value distribution of an attribute to the desired distribution of a continuous symbolization control variable (like size, width, color, etc);
• Recoding: Transformation of discrete values to any other values. This is needed when integers have to be translated into text or, reversely, text contents into other texts or numeric values or colors.

It allows to replace a color in the ExternalGraphic, the color specified in the OriginalColor sub-element, by another color as a result of a recode function.

See also

Function, ExternalGraphic, MapItem, ParameterValue

Definition at line 75 of file Recode.h.

Member Typedef Documentation

typedef void te::common::BaseVisitable< Visitor , void >::ReturnType

inherited

Definition at line 58 of file BaseVisitable.h.

typedef Visitor te::common::BaseVisitable< Visitor , void >::VisitorType

inherited

Definition at line 57 of file BaseVisitable.h.

Constructor & Destructor Documentation

te::se::Recode::Recode

(

)

It initializes a new Recode.

te::se::Recode::~Recode

(

)

Destructor.

te::se::Recode::Recode

(

const Recode &

rhs

)

Copy constructor.

Parameters

rhs	The other Categorize.

Member Function Documentation

virtual ReturnType te::common::BaseVisitable< Visitor , void >::accept ( VisitorType &  guest ) const

pure virtualinherited

It call the visit method from the guest object.

Parameters

guest

The guest or visitor.

Returns

Any valid value define by the template type R.

void te::se::Recode::add

(

MapItem *

m

)

virtual Recode* te::se::Recode::clone ( ) const

virtual

It returns a clone of this object.

Returns

A clone of this object.

Implements te::fe::Expression.

const std::string& te::se::Function::getFallbackValue ( ) const

inherited

std::vector<MapItem*> te::se::Recode::getMapItems

(

)

const

void te::se::Function::setFallbackValue ( const std::string &  v )

inherited

void te::se::Recode::setLookupValue

(

ParameterValue *

v

)

Member Data Documentation

std::string te::se::Function::m_fallbackValue

protectedinherited

The value of the fallbackValue attribute is used as a default value, if the SE implementation does not support the function. If the implementation supports the function, then the result value is determined by executing the function. (Mandatory)

Definition at line 88 of file Function.h.

ParameterValue* te::se::Recode::m_lookupValue

private

Mandatory.

Definition at line 120 of file Recode.h.

std::vector<MapItem*> te::se::Recode::m_mapItems

private

Mandatory.

Definition at line 121 of file Recode.h.

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

• /home/castejon/castejon_files/develop/terralib5/git_master/src/terralib/se/Recode.h