Sampler Class Reference

Utility for sampling images (2D data), outputting formatted text data. More...

#include <Sampler.h>

Inheritance diagram for Sampler:

Collaboration diagram for Sampler:

Public Member Functions
	Sampler (const Sampler &sampler)
char	getCommentChar () const
	Returns character, also supporting numeric ASCII values between 32 and 128.
std::string	getFormat (const std::string &formatStr) const
	Use given format or generate default "${var},${var2}, ...".
template<class D , class P >
void	sample (const std::map< std::string, D > &images, const P &picker, const std::string &formatStr, std::ostream &ostr=std::cout) const
	Main function.
Public Member Functions inherited from BeanLike
	BeanLike (const BeanLike &b)
	BeanLike (const std::string &name, const std::string &description="")
virtual const std::string &	getName () const
	Return the name of an instance.
virtual const std::string &	getDescription () const
	Return a brief description.
bool	hasParameters () const
template<class F >
F	getParameter (const std::string &p) const
	Gets a single parameter.
const map_t &	getParameters () const
map_t &	getParameters ()
template<class F >
void	setParametersFromEntries (const F &args)
void	setParameters (std::initializer_list< Variable::init_pair_t > args)
	Grants access to (if above hidden)
virtual void	setParameters (const std::string &p, char assignmentSymbol='=', char separatorSymbol=0)
	Sets comma-separated parameters in a predetermined order "a,b,c" or by specifing them "b=2".
template<class T >
void	setParameters (const std::map< std::string, T > &args)
	Set parameters.
template<class T >
void	setParameters (const SmartMap< T > &args)
	Set parameters.
void	setParameter (const std::string &p, const Castable &value)
	Sets a single parameter.
template<class T >
void	setParameter (const std::string &p, const VariableT< T > &value)
template<class F >
void	setParameter (const std::string &p, const F &value)
	Sets a single parameter.
template<class F >
void	setParameter (const std::string &p, std::initializer_list< F > value)
	Sets a single parameter.
BeanLike &	operator= (const BeanLike &b)
virtual std::ostream &	toStream (std::ostream &ostr, bool compact=true) const

Public Attributes
int	iStep = 10
int	jStep = 0
drain::Range< int >	iRange = {-1,1}
drain::Range< int >	jRange = {-1,1}
std::string	commentPrefix = "#"
	Escape std::string for prefixing text no to be handled as data values.
bool	skipVoid = false
	Skip lines, if contain missing values.
std::string	voidComment = "void"
std::string	handleVoid = "null"
ReferenceMap2	variableMap
	Interface that links coordinates and image data.

Additional Inherited Members
Public Types inherited from BeanLike
typedef ReferenceMap	map_t
Protected Member Functions inherited from BeanLike
virtual void	storeLastArguments (const std::string &p)
	Called after setParameters()
virtual void	updateBean () const
	Called after setParameters()
Protected Attributes inherited from BeanLike
const std::string	name
const std::string	description
map_t	parameters

Detailed Description

Utility for sampling images (2D data), outputting formatted text data.

If the commentChar has been defined, the first line contains the applied format std::string (default or user-defined) and other metadata.

Member Function Documentation

getFormat()

std::string getFormat

(

const std::string &

formatStr

)

const

Use given format or generate default "${var},${var2}, ...".

If format not explicitly set, use all the variables => create default format.

sample()

template<class D , class P >

void sample ( const std::map< std::string, D > &  images, const P &  picker, const std::string &  formatStr, std::ostream &  ostr = std::cout  ) const

inline

Main function.

Template Parameters

D	- applied data type (e.g. Channel or ImageFrame), for which P::getValue(T &data) is implemented.
P	- picker derived from class Picker, implements getValue(T &data).

Modifies this->variableMap by adding an entry corresponding to the key of each data source.

No referencing of coordinates is done by Sampler because applications might prefer derived variables like j2=(height-1-j) or geographical coordinates. Set them in Picker.

Final formatter defined here, to copy ostr precision etc.

Write header, if commentChar has been set.

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

• src/drain/image/Sampler.h
• src/drain/image/Sampler.cpp