Distortion Class Reference

Public Types

• typedef double coeff_t
• typedef Cheby2D_7< coeff_t,
  coeff_t > DistortionPattern
• typedef DistortionPattern::TPar TPar

Public Member Functions

• Distortion ()
• Distortion (const std::string &filename)
• Distortion (const Distortion &other)
• virtual ~Distortion ()
• void init_from_file (const std::string &filename)
• void set_niter (const int i=1)
• void set_reference (const MArray< float, 1 > &w, const MArray< float, 1 > &f, const float wave)
• void set_reference_f (const MArray< float, 1 > &f)
• void calculate_offsets (const MArray< DistDataTuple, 2 > &D)

  calculate offsets for each fiber to the global wavelength solution
  

• void apply_offsets (MArray< DistDataTuple, 2 > &D)
• float get_reference_f (int fibernum) const
• float get_reference_wavelength () const

  get the reference wavelength
  

• MArray< float, 1 > get_reference_f () const
• MArray< float, 1 > get_reference_w () const
• void get_wavelength_boundaries (int px, int py, float *wl, float *wu) const

  get the boundaries in wavelength of a pixel
  

• void get_fiber_boundaries (int px, int py, float *fl, float *fu) const

  get the boundaries in f of a pixel
  

• void get_pixel_boundaries (int px, int py, float *wl, float *wu, float *fl, float *fu) const

  get the boundaries in wavelength and f of a pixel (optimized)
  

• int get_numfibers () const

  return number of fibers in distortion pattern
  

• float get_position_angle (const float w, const float f) const
• float map_xy_wavelength (float x, float y) const

  map between x,y and wave,fiber
  

• float map_xy_fiber (float x, float y) const
• float map_xf_y (float x, float f) const
• float map_wf_x (float w, float f) const
• float map_wf_y (float w, float f) const
• float map_xy_yprime (float x, float y) const
• int map_xy_fibernum (float x, float y) const

  map x and y to the nearest fiber number
  

• float map_xy_wavelength_fast (float x, float y, float *dw) const
• float map_xy_fiber_fast (float x, float y, float *df) const
• void write_fits_map (const string &basename, int x1, int x2, int y1, int y2) const

  write out distortion map as fits file
  

• void fit_wavelength (MArray< coeff_t, 1 > &x, MArray< coeff_t, 1 > &y, MArray< coeff_t, 1 > &wavelengths, MArray< coeff_t, 1 > &w_errors)

  fit the function wavelength(x,y)
  

• void fit_fiberpos (MArray< coeff_t, 1 > &x, MArray< coeff_t, 1 > &y, MArray< coeff_t, 1 > &fiberpos, MArray< coeff_t, 1 > &f_errors)

  fit the function fiberpos(x,y)
  

• void fit_x (MArray< coeff_t, 1 > &w, MArray< coeff_t, 1 > &f, MArray< coeff_t, 1 > &x, MArray< coeff_t, 1 > &x_errors)

  fit the function x(wavelength,fiber)
  

• void fit_y (MArray< coeff_t, 1 > &w, MArray< coeff_t, 1 > &f, MArray< coeff_t, 1 > &y, MArray< coeff_t, 1 > &y_errors)

  fit the function y(wavelength,fiber)
  

• void fit_fy (MArray< coeff_t, 1 > &x, MArray< coeff_t, 1 > &f, MArray< coeff_t, 1 > &y, MArray< coeff_t, 1 > &y_errors)

  fit the function y(x,fiber)
  

• void fit_yprime (MArray< coeff_t, 1 > &x, MArray< coeff_t, 1 > &y, MArray< coeff_t, 1 > &yprime, MArray< coeff_t, 1 > &yprime_errors)

• TPar get_w_coefficients (void) const
• TPar get_f_coefficients (void) const
• TPar get_x_coefficients (void) const
• TPar get_y_coefficients (void) const
• TPar get_fy_coefficients (void) const
• float map_forward_x (const float x, const float y) const
• float map_forward_y (const float x, const float y) const
• float get_forward_J (const float x, const float y, const float dx, const float dy) const
• float map_inverse_x (const float u, const float v) const
• float map_inverse_y (const float u, const float v) const
• float get_inverse_J (const float u, const float v, const float du, const float dv) const
• void print_w_coefficients ()

  print coefficients
  

• void print_f_coefficients ()
• void print_x_coefficients ()
• void print_y_coefficients ()
• void print_fy_coefficients ()
• void print_yprime_coefficients ()

Static Public Attributes

• static string version = "$Id: distortion.cpp 1075 2015-10-17 18:44:29Z snigula $"

Protected Attributes

• DistortionPattern F_

  instance of function
  

• TPar wave_par_

  Parameters for the fit x,y -> wavelength.
  

• TPar wave_errors_

  Errors for the fit x,y -> wavelength.
  

• TPar fiber_par_

  Parameters for the fit x,y -> fibernumber.
  

• TPar fiber_errors_

  Errors for the fit x,y -> fibernumber.
  

• MArray< float, 1 > reference_w_

  Wavelengths of the calibration lines used.
  

• MArray< float, 1 > reference_f_

  y/f values of the fibers at the reference wavelength
  

• float reference_wavelength_

  Wavelength of the reference wavelength.
  

• TPar x_par_

  Parameters for the fit w,f -> x.
  

• TPar x_errors_

  Errors for the fit w,f -> x.
  

• TPar y_par_

  Parameters for the fit w,f -> y.
  

• TPar y_errors_

  Errors for the fit w,f -> y.
  

• TPar fy_par_

  Parameters for the fit x,f -> y.
  

• TPar fy_errors_

  Errors for the fit x,f -> y.
  

• MArray< float, 1 > x_offsets_

  Offsets in x between fiber positions and the fit solution, needed by map_xy_wavelength.
  

• MArray< float, 1 > wave_offsets_

  Offsets in w between fiber positions and the fit solution, needed by map_xy_wavelength.
  

• int fit_niter_

  number of iterations while fitting
  

Friends

• std::ostream & operator<< (std::ostream &os, const Distortion &d)
• std::istream & operator>> (std::istream &is, Distortion &d)

---

Detailed Description

this class encapsulates all the knowledge about the geometric distortion pattern of the VIRUS spectrograph. it maps (wavelength, fiber) <-> (x_ccd,y_ccd). it contains routines to fit a solution and to access the solution and its inverse.

Together with FiberModel and PsfModel, this forms a complete model of the VIRUS spectrograph.

---

Member Typedef Documentation

typedef double Distortion::coeff_t

typedef Cheby2D_7<coeff_t,coeff_t> Distortion::DistortionPattern

typedef DistortionPattern::TPar Distortion::TPar

---

Constructor & Destructor Documentation

Distortion::Distortion

(

)

References fiber_errors_, fiber_par_, fit_niter_, fy_errors_, fy_par_, reference_wavelength_, wave_errors_, wave_par_, x_par_, y_errors_, and y_par_.

Distortion::Distortion

(

const std::string &

filename

)

References init_from_file().

Distortion::Distortion

(

const Distortion &

other

)

References F_, fiber_errors_, fiber_par_, fit_niter_, fy_errors_, fy_par_, reference_f_, reference_w_, reference_wavelength_, wave_errors_, wave_offsets_, wave_par_, x_errors_, x_offsets_, x_par_, y_errors_, and y_par_.

virtual Distortion::~Distortion

(

)

[inline, virtual]

---

Member Function Documentation

void Distortion::init_from_file

(

const std::string &

filename

)

References fit_niter_.

Referenced by Distortion(), ImStat::ImStat(), main(), plot_data(), and VFrame::read_distortions().

void Distortion::set_niter

(

const int

i = 1

)

[inline]

References fit_niter_.

Referenced by fit_initial_dist(), and main().

void Distortion::set_reference	(	const MArray< float, 1 > &	w,
		const MArray< float, 1 > &	f,
		const float	wave
	)

set reference w,f for each fiber for a given single wavelength (for high order offsets from the smooth solution)

References reference_f_, reference_w_, reference_wavelength_, wave_offsets_, and x_offsets_.

Referenced by fit_initial_dist(), and main().

void Distortion::set_reference_f

(

const MArray< float, 1 > &

f

)

References reference_f_.

Referenced by main(), and refit_models().

void Distortion::calculate_offsets

(

const MArray< DistDataTuple, 2 > &

D

)

References _scalf_, _scalw_, _scalx_, _scaly_, c, F_, wave_offsets_, wave_par_, x_offsets_, and x_par_.

Referenced by fit_with_arc().

void Distortion::apply_offsets

(

MArray< DistDataTuple, 2 > &

D

)

References wave_offsets_, and x_offsets_.

Referenced by fit_with_arc().

float Distortion::get_reference_f

(

int

fibernum

)

const [inline]

get the y coordinate on the CCD of the peak of fiber fibernum at the reference wavelength

this number is also the value the distortion solution has at each point along the peak intensity of this fiber

References reference_f_.

Referenced by FiberIterator::beginFiber(), Extractor::extract_aperture(), Extractor::extract_aperture_ac(), Extractor::extract_aperture_x(), Extractor::extract_aperture_x_ac(), Extractor::extract_fiber(), ProfExtractor::extract_profile_fit(), Projector::find_affected_pixels(), fit_with_trace(), FiberModel::flat_from_data(), Continuum::get_continua(), FiberModel::get_fit_parameters(), FiberModel::get_single_fiberflux(), FiberModel::get_single_fiberprofile(), Continuum::get_sn_fiber(), Extractor::get_wavelengths(), main(), ImStat::make_hist(), Measure::measure_at_ref_w(), Measure::measure_fiberpars(), FiberModel::pixelflat(), plot_fibermodel(), Projector::read_fibers(), ProfExtractor::rebin_wavelength(), refit_models(), Measure::remove_spectra(), Measure::remove_spectra_ind(), SuperSky::sample_sky_for_line(), SuperSky::SuperSky(), VirusHealth::validate_peaks(), and write_fiber_data().

float Distortion::get_reference_wavelength

(

)

const [inline]

References reference_wavelength_.

Referenced by Measure::measure_at_ref_w().

MArray< float, 1 > Distortion::get_reference_f

(

)

const

References reference_f_.

MArray< float, 1 > Distortion::get_reference_w

(

)

const

References reference_w_.

void Distortion::get_wavelength_boundaries	(	int	px,
		int	py,
		float *	wl,
		float *	wu
	)			const

References map_xy_wavelength().

Referenced by PointSourceDetector::equivalent_width().

void Distortion::get_fiber_boundaries	(	int	px,
		int	py,
		float *	fl,
		float *	fu
	)			const

References map_xy_fiber().

void Distortion::get_pixel_boundaries	(	int	px,
		int	py,
		float *	wl,
		float *	wu,
		float *	fl,
		float *	fu
	)			const

References map_xy_fiber(), and map_xy_wavelength().

int Distortion::get_numfibers

(

)

const [inline]

References reference_f_.

Referenced by ProfExtractor::extract_profile_fit(), Measure::fit_fiberthroughput(), FiberModel::get_cumulative_fiberflux(), main(), measure_5577_flux(), Measure::measure_at_ref_w(), Measure::measure_fiberpars(), plot_fibermodel(), plot_fibermodel_data(), refit_models(), Measure::scale_fiberthroughput(), and VirusHealth::validate_peaks().

float Distortion::get_position_angle	(	const float	w,
		const float	f
	)			const

return the position angle (the direction along a fiber) at postion {w,f}. the angle is returned in degrees counterclockwise

References map_wf_x(), and map_wf_y().

Referenced by Measure::fit_psf2D(), and PsfModel::get_psf().

TPar Distortion::get_w_coefficients

(

void

)

const [inline]

get arrays of coefficients

References wave_par_.

TPar Distortion::get_f_coefficients

(

void

)

const [inline]

References fiber_par_.

TPar Distortion::get_x_coefficients

(

void

)

const [inline]

References x_par_.

TPar Distortion::get_y_coefficients

(

void

)

const [inline]

References y_par_.

TPar Distortion::get_fy_coefficients

(

void

)

const [inline]

References fy_par_.

float Distortion::map_xy_wavelength	(	float	x,
		float	y
	)			const

References _scalx_, _scaly_, F_, find_closest_index(), map_xy_fiber(), reference_f_, reference_wavelength_, wave_offsets_, and wave_par_.

Referenced by Extractor::extract_aperture(), Extractor::extract_aperture_w_rebin(), Extractor::extract_fiber(), extract_fibers_in_aperture(), Measure::fit_psf1D(), Measure::fit_psf2D(), fit_with_trace(), get_pixel_boundaries(), PsfModel::get_psf(), get_wavelength_boundaries(), Extractor::get_wavelengths(), FiberModel::get_xy_amplitude(), main(), map_forward_x(), mask_wavelength(), DitherEnvironment::mask_wavelength(), Measure::measure_fiberpars(), mkimage(), mkimage_list(), plot_distortion(), plot_fibermodel(), ProfExtractor::rebin_wavelength(), Measure::rectify_to_wf(), Measure::remove_spectra(), Measure::remove_spectra_ind(), DitherEnvironment::setup_grid_limits(), FiberIterator::w(), write_fits_map(), write_qc_files(), and write_reference_files().

float Distortion::map_xy_fiber	(	float	x,
		float	y
	)			const

References _scalx_, _scaly_, F_, and fiber_par_.

Referenced by FiberIterator::f(), fit_distortion(), Measure::fit_psf1D(), Measure::fit_psf2D(), fit_with_trace(), Continuum::get_continua(), get_fiber_boundaries(), get_pixel_boundaries(), PsfModel::get_psf(), map_forward_y(), map_xy_fibernum(), map_xy_wavelength(), plot_distortion(), write_fits_map(), write_qc_files(), and write_reference_files().

float Distortion::map_xf_y	(	float	x,
		float	f
	)			const

References _scalf_, _scalx_, F_, and fy_par_.

Referenced by FiberIterator::beginFiber(), ProfExtractor::extract_profile_fit(), Measure::fit_peaks3H_initial(), Measure::fit_psf1D(), FiberModel::flat_from_data(), FiberModel::get_fit_parameters(), FiberModel::get_single_fiberflux(), FiberModel::get_single_fiberprofile(), main(), ImStat::make_hist(), Measure::measure_fiberpars(), FiberModel::pixelflat(), plot_fibermodel(), Measure::remove_spectra(), Measure::remove_spectra_ind(), write_fiber_data(), and write_qc_files().

float Distortion::map_wf_x	(	float	w,
		float	f
	)			const

References _scalf_, _scalw_, F_, find_closest_index(), reference_f_, reference_wavelength_, x_offsets_, and x_par_.

Referenced by Extractor::extract_aperture_w_rebin(), Projector::find_affected_pixels(), Measure::fit_peaks3H_initial(), Measure::fit_psf1D(), get_position_angle(), main(), map_inverse_x(), mask_wavelength(), DitherEnvironment::mask_wavelength(), Measure::measure_at_ref_w(), Measure::measure_fiberpars(), ProfExtractor::rebin_wavelength(), Measure::remove_spectra(), Measure::remove_spectra_ind(), VirusHealth::validate_peaks(), write_qc_files(), and write_reference_files().

float Distortion::map_wf_y	(	float	w,
		float	f
	)			const

References _scalf_, _scalw_, F_, and y_par_.

Referenced by Extractor::extract_aperture_w_rebin(), Projector::find_affected_pixels(), Measure::fit_peaks3H_initial(), Measure::fit_psf1D(), get_position_angle(), main(), map_inverse_y(), Measure::measure_at_ref_w(), Measure::measure_fiberpars(), Measure::remove_spectra(), VirusHealth::validate_peaks(), write_qc_files(), and write_reference_files().

float Distortion::map_xy_yprime	(	float	x,
		float	y
	)			const

int Distortion::map_xy_fibernum	(	float	x,
		float	y
	)			const

References find_closest_index(), map_xy_fiber(), and reference_f_.

Referenced by FiberModel::flat_from_data(), Continuum::get_continua(), FiberModel::get_cumulative_fiberflux(), FiberModel::get_fit_parameters(), Continuum::get_sn_fiber(), FiberModel::get_xy_amplitude(), main(), FiberIterator::operator++(), FiberModel::pixelflat(), Measure::remove_spectra(), Measure::remove_spectra_ind(), SuperSky::sample_sky_for_line(), and Continuum::subtract_continuum().

float Distortion::map_xy_wavelength_fast	(	float	x,
		float	y,
		float *	dw
	)			const

References _scalx_, _scaly_, F_, fiber_par_, find_closest_index(), reference_f_, wave_offsets_, and wave_par_.

Referenced by SourceSimulator::add_continuum_source_to_images(), add_flux_in_fibers(), SourceSimulator::add_sersic_source_to_images(), SourceSimulator::addSkyToFrame(), PointSourceDetector::make_image_header(), SuperSky::propagate_error(), SuperSky::sample_sky_for_line(), and SuperSky::subtract_sky_from_line().

float Distortion::map_xy_fiber_fast	(	float	x,
		float	y,
		float *	df
	)			const

References _scalx_, _scaly_, F_, and fiber_par_.

Referenced by SuperSky::propagate_error(), SuperSky::sample_sky_for_line(), and SuperSky::subtract_sky_from_line().

float Distortion::map_forward_x	(	const float	x,
		const float	y
	)			const [inline]

interface compatible with resampler transform objects see resmapler.h / transform.h

References map_xy_wavelength().

Referenced by get_forward_J().

float Distortion::map_forward_y	(	const float	x,
		const float	y
	)			const [inline]

References map_xy_fiber().

Referenced by get_forward_J().

float Distortion::get_forward_J	(	const float	x,
		const float	y,
		const float	dx,
		const float	dy
	)			const

References map_forward_x(), and map_forward_y().

float Distortion::map_inverse_x	(	const float	u,
		const float	v
	)			const [inline]

References map_wf_x().

Referenced by get_inverse_J().

float Distortion::map_inverse_y	(	const float	u,
		const float	v
	)			const [inline]

References map_wf_y().

Referenced by get_inverse_J().

float Distortion::get_inverse_J	(	const float	u,
		const float	v,
		const float	du,
		const float	dv
	)			const

References map_inverse_x(), and map_inverse_y().

void Distortion::write_fits_map	(	const string &	basename,
		int	x1,
		int	x2,
		int	y1,
		int	y2
	)			const

References map_xy_fiber(), map_xy_wavelength(), and prepend_filename().

void Distortion::fit_wavelength	(	MArray< coeff_t, 1 > &	x,
		MArray< coeff_t, 1 > &	y,
		MArray< coeff_t, 1 > &	wavelengths,
		MArray< coeff_t, 1 > &	w_errors
	)

References _scalx_, _scaly_, BivariateLinearLsqFit< T, Function >::fit(), fit_niter_, wave_errors_, and wave_par_.

Referenced by fit_with_arc().

void Distortion::fit_fiberpos	(	MArray< coeff_t, 1 > &	x,
		MArray< coeff_t, 1 > &	y,
		MArray< coeff_t, 1 > &	fiberpos,
		MArray< coeff_t, 1 > &	f_errors
	)

References _scalx_, _scaly_, fiber_errors_, fiber_par_, BivariateLinearLsqFit< T, Function >::fit(), and fit_niter_.

Referenced by fit_distortion(), fit_with_arc(), and fit_with_trace().

void Distortion::fit_x	(	MArray< coeff_t, 1 > &	w,
		MArray< coeff_t, 1 > &	f,
		MArray< coeff_t, 1 > &	x,
		MArray< coeff_t, 1 > &	x_errors
	)

References _scalf_, _scalw_, BivariateLinearLsqFit< T, Function >::fit(), fit_niter_, x_errors_, and x_par_.

Referenced by fit_distortion(), fit_with_arc(), and fit_with_trace().

void Distortion::fit_y	(	MArray< coeff_t, 1 > &	w,
		MArray< coeff_t, 1 > &	f,
		MArray< coeff_t, 1 > &	y,
		MArray< coeff_t, 1 > &	y_errors
	)

References _scalf_, _scalw_, BivariateLinearLsqFit< T, Function >::fit(), fit_niter_, y_errors_, and y_par_.

Referenced by fit_distortion(), fit_with_arc(), and fit_with_trace().

void Distortion::fit_fy	(	MArray< coeff_t, 1 > &	x,
		MArray< coeff_t, 1 > &	f,
		MArray< coeff_t, 1 > &	y,
		MArray< coeff_t, 1 > &	y_errors
	)

References _scalf_, _scalx_, BivariateLinearLsqFit< T, Function >::fit(), fit_niter_, fy_errors_, and fy_par_.

Referenced by fit_distortion(), and fit_with_trace().

void Distortion::fit_yprime	(	MArray< coeff_t, 1 > &	x,
		MArray< coeff_t, 1 > &	y,
		MArray< coeff_t, 1 > &	yprime,
		MArray< coeff_t, 1 > &	yprime_errors
	)

void Distortion::print_w_coefficients

(

)

References Cheby2D_7< coeff_t, coeff_t >::prettyPrint(), and wave_par_.

void Distortion::print_f_coefficients

(

)

References fiber_par_, and Cheby2D_7< coeff_t, coeff_t >::prettyPrint().

void Distortion::print_x_coefficients

(

)

References Cheby2D_7< coeff_t, coeff_t >::prettyPrint(), and x_par_.

void Distortion::print_y_coefficients

(

)

References Cheby2D_7< coeff_t, coeff_t >::prettyPrint(), and y_par_.

void Distortion::print_fy_coefficients

(

)

References fy_par_, and Cheby2D_7< coeff_t, coeff_t >::prettyPrint().

void Distortion::print_yprime_coefficients

(

)

---

Friends And Related Function Documentation

std::ostream& operator<<	(	std::ostream &	os,
		const Distortion &	d
	)			[friend]

std::istream& operator>>	(	std::istream &	is,
		Distortion &	d
	)			[friend]

---

Field Documentation

string Distortion::version = "$Id: distortion.cpp 1075 2015-10-17 18:44:29Z snigula $" [static]

Referenced by main().

DistortionPattern Distortion::F_ [protected]

Referenced by calculate_offsets(), Distortion(), map_wf_x(), map_wf_y(), map_xf_y(), map_xy_fiber(), map_xy_fiber_fast(), map_xy_wavelength(), and map_xy_wavelength_fast().

TPar Distortion::wave_par_ [protected]

Referenced by calculate_offsets(), Distortion(), fit_wavelength(), get_w_coefficients(), map_xy_wavelength(), map_xy_wavelength_fast(), operator<<(), operator>>(), and print_w_coefficients().

TPar Distortion::wave_errors_ [protected]

Referenced by Distortion(), fit_wavelength(), operator<<(), and operator>>().

TPar Distortion::fiber_par_ [protected]

Referenced by Distortion(), fit_fiberpos(), get_f_coefficients(), map_xy_fiber(), map_xy_fiber_fast(), map_xy_wavelength_fast(), operator<<(), operator>>(), and print_f_coefficients().

TPar Distortion::fiber_errors_ [protected]

Referenced by Distortion(), fit_fiberpos(), operator<<(), and operator>>().

MArray<float,1> Distortion::reference_w_ [protected]

Referenced by Distortion(), get_reference_w(), operator<<(), operator>>(), and set_reference().

MArray<float,1> Distortion::reference_f_ [protected]

Referenced by Distortion(), get_numfibers(), get_reference_f(), map_wf_x(), map_xy_fibernum(), map_xy_wavelength(), map_xy_wavelength_fast(), operator<<(), operator>>(), set_reference(), and set_reference_f().

float Distortion::reference_wavelength_ [protected]

Referenced by Distortion(), get_reference_wavelength(), map_wf_x(), map_xy_wavelength(), operator<<(), operator>>(), and set_reference().

TPar Distortion::x_par_ [protected]

Referenced by calculate_offsets(), Distortion(), fit_x(), get_x_coefficients(), map_wf_x(), operator<<(), operator>>(), and print_x_coefficients().

TPar Distortion::x_errors_ [protected]

Referenced by Distortion(), fit_x(), operator<<(), and operator>>().

TPar Distortion::y_par_ [protected]

Referenced by Distortion(), fit_y(), get_y_coefficients(), map_wf_y(), operator<<(), operator>>(), and print_y_coefficients().

TPar Distortion::y_errors_ [protected]

Referenced by Distortion(), fit_y(), operator<<(), and operator>>().

TPar Distortion::fy_par_ [protected]

Referenced by Distortion(), fit_fy(), get_fy_coefficients(), map_xf_y(), operator<<(), operator>>(), and print_fy_coefficients().

TPar Distortion::fy_errors_ [protected]

Referenced by Distortion(), fit_fy(), operator<<(), and operator>>().

MArray<float,1> Distortion::x_offsets_ [protected]

Referenced by apply_offsets(), calculate_offsets(), Distortion(), map_wf_x(), operator<<(), operator>>(), and set_reference().

MArray<float,1> Distortion::wave_offsets_ [protected]

Referenced by apply_offsets(), calculate_offsets(), Distortion(), map_xy_wavelength(), map_xy_wavelength_fast(), operator<<(), operator>>(), and set_reference().

int Distortion::fit_niter_ [protected]

Referenced by Distortion(), fit_fiberpos(), fit_fy(), fit_wavelength(), fit_x(), fit_y(), init_from_file(), and set_niter().