MHATableLookup::xy_table_t Class Reference

Class for interpolation with non-equidistant x values. More...

Inheritance diagram for MHATableLookup::xy_table_t:

Public Member Functions
	xy_table_t ()
mha_real_t	lookup (mha_real_t x) const
	Return the y-value at the position of the nearest x value below input. More...
mha_real_t	interp (mha_real_t x) const
	Linear interpolation function. More...
void	add_entry (mha_real_t x, mha_real_t y)
	Add a single x-y pair entry. More...
void	add_entry (mha_real_t *pVX, mha_real_t *pVY, unsigned int len)
	Add multiple entries at once. More...
void	clear ()
	Clear the table and transformation functions. More...
void	set_xfun (float(*pXFun)(float))
	Set transformation function for x values. More...
void	set_yfun (float(*pYFun)(float))
	Set transformation function for y values during insertion. More...
void	set_xyfun (float(*pYFun)(float, float))
	Set transformation function for y values during insertion, based on x and y values. More...
std::pair< mha_real_t, mha_real_t >	get_xlimits () const
	returns the min and max x of all mesh points that are stored in the lookup table, i.e. More...
Public Member Functions inherited from MHATableLookup::table_t
	table_t (void)
virtual	~table_t (void)

Private Attributes
std::map< mha_real_t, mha_real_t >	mXY
float(*	xfun )(float)
float(*	yfun )(float)
float(*	xyfun )(float, float)

Additional Inherited Members

Detailed Description

Class for interpolation with non-equidistant x values.

Linear interpolation of the x-y table is performed. A transformation of x and y-values is possible; if a transformation function is provided for the x-values, the same function is applied to the argument of xy_table_t::interp() and xy_table_t::lookup(). The transformation of y values is applied only during insertion into the table. Two functions for y-transformation can be provided: a simple transformation which depends only on the y values, or a transformation which takes both (non-transformed) x and y value as an argument. The two-argument transformation is applied before the one-argument transformation.

Constructor & Destructor Documentation

xy_table_t()

xy_table_t::xy_table_t

(

)

Member Function Documentation

lookup()

mha_real_t xy_table_t::lookup ( mha_real_t  x ) const

virtual

Return the y-value at the position of the nearest x value below input.

Parameters

x	Input value

Returns

y value at nearest x value below input.

Implements MHATableLookup::table_t.

interp()

mha_real_t xy_table_t::interp ( mha_real_t  x ) const

virtual

Linear interpolation function.

Parameters

x

x value

Returns

interpolated y value

Implements MHATableLookup::table_t.

add_entry() [1/2]

void xy_table_t::add_entry	(	mha_real_t	x,
		mha_real_t	y
	)

Add a single x-y pair entry.

Parameters

x	x value
y	corresponding y value

add_entry() [2/2]

void xy_table_t::add_entry	(	mha_real_t *	pVX,
		mha_real_t *	pVY,
		unsigned int	uLength
	)

Add multiple entries at once.

Parameters

pVX	array of x values
pVY	array of y values
uLength	Length of x and y arrays

clear()

void xy_table_t::clear ( void  )

virtual

Clear the table and transformation functions.

Implements MHATableLookup::table_t.

set_xfun()

void xy_table_t::set_xfun

(

float(*)(float)

fun

)

Set transformation function for x values.

Parameters

fun	Transformation function.

set_yfun()

void xy_table_t::set_yfun

(

float(*)(float)

fun

)

Set transformation function for y values during insertion.

Parameters

fun	Transformation function.

set_xyfun()

void xy_table_t::set_xyfun

(

float(*)(float, float)

fun

)

Set transformation function for y values during insertion, based on x and y values.

Parameters

fun	Transformation function.

get_xlimits()

std::pair<mha_real_t,mha_real_t> MHATableLookup::xy_table_t::get_xlimits ( ) const

inline

returns the min and max x of all mesh points that are stored in the lookup table, i.e.

after transformation with xfun, if any. Not real-time safe

Member Data Documentation

mXY

std::map<mha_real_t,mha_real_t> MHATableLookup::xy_table_t::mXY

private

xfun

float(* MHATableLookup::xy_table_t::xfun) (float)

private

yfun

float(* MHATableLookup::xy_table_t::yfun) (float)

private

xyfun

float(* MHATableLookup::xy_table_t::xyfun) (float, float)

private

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

• mha_tablelookup.hh
• mha_tablelookup.cpp