Poly2d Class Reference

Data structure for representing 2D polynomials. More...

#include <Poly2d.h>

Public Member Functions
	Poly2d (int xo, int yo, double xm, double ym, double xn, double yn)
	Simple constructor.
	Poly2d ()
	Empty constructor.
	Poly2d (const Poly2d &p)
	Copy constructor.
Poly2d &	operator= (const Poly2d &)
	Assignment operator.
void	setCoeff (int row, int col, double val)
	Set coefficient by indices.
double	getCoeff (int row, int col) const
	Get coefficient by indices.
double	eval (double y, double x) const
	Evaluate polynomial at given y/azimuth/row ,x/range/col.
void	printPoly () const
	Printing for debugging.

Public Attributes
int	xOrder
	Order of polynomial in range or x.
int	yOrder
	Order of polynomial in azimuth or y.
double	xMean
	Mean in range or x direction.
double	yMean
	Mean in azimuth or y direction.
double	xNorm
	Norm in range or x direction.
double	yNorm
	Norm in azimuth or y direction.
std::vector< double >	coeffs
	Linearized vector of coefficients in row-major format.

Detailed Description

Data structure for representing 2D polynomials.

Poly2D is function of the form

\[ f\left( y, x \right) = \sum_{i=0}^{N_y} \sum_{j=0}^{N_x} a_{ij} \cdot \left( \frac{y-\mu_y}{\sigma_y} \right)^i \cdot \left( \frac{x-\mu_x}{\sigma_x} \right)^j \]

where \(a_ij\) represents the coefficients, \(\mu_x\) and \(\mu_y\) represent the means and \(\sigma_x\) and \(\sigma_y\) represent the norms

Constructor & Destructor Documentation

Poly2d() [1/2]

isce3::core::Poly2d::Poly2d ( int xo, int yo, double xm, double ym, double xn, double yn )

inline

Simple constructor.

Parameters

[in]	xo	x/Range Order
[in]	yo	y/Azimuth Order
[in]	xm	x/Range Mean
[in]	ym	y/Azimuth Mean
[in]	xn	x/Range Norm
[in]	yn	y/Azimuth Norm

Poly2d() [2/2]

isce3::core::Poly2d::Poly2d ( const Poly2d & p )

inline

Copy constructor.

Parameters

[in]

p

Poly2D object

Member Function Documentation

eval()

double isce3::core::Poly2d::eval	(	double	y,
		double	x ) const

Evaluate polynomial at given y/azimuth/row ,x/range/col.

Parameters

[in]	azi	azimuth or y value
[in]	rng	range or x value

getCoeff()

double isce3::core::Poly2d::getCoeff ( int row, int col ) const

inline

Get coefficient by indices.

Parameters

[in]	row	azimuth/y index
[in]	col	range/x index

setCoeff()

void isce3::core::Poly2d::setCoeff ( int row, int col, double val )

inline

Set coefficient by indices.

Parameters

[in]	row	azimuth/y index
[in]	col	range/x index
[in]	val	Coefficient value

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

• /home/runner/work/isce3/isce3/cxx/isce3/core/Poly2d.h
• /home/runner/work/isce3/isce3/cxx/isce3/core/Poly2d.cpp