radiation_field.cc File Reference

Radiation field calculations. More...

#include "radiation_field.h"
#include "sorting.h"

Go to the source code of this file.

Functions
void	error_in_integrate (const String &error_msg, const Numeric &value_that_should_be_unity)
	Throws an error if integration values are bad. More...
Numeric	test_integrate_convolved (const Eigen::Ref< Eigen::VectorXcd > F, const Vector &f)
	Integrate the line shape. More...
Numeric	test_integrate_zenith (const Vector &cosza, const Array< Index > &sorted_index)
	Integrate cos(za) over the angles. More...
Numeric	integrate_convolved (const RadiationVector &I, const Eigen::VectorXcd &F, const Vector &f)
	Convolve intensity and line shape and integrate. More...
Numeric	integrate_convolved (const TransmissionMatrix &T, const Eigen::VectorXcd &F, const Vector &f)
	Convolve transmission and line shape and integrate. More...
Numeric	integrate_zenith (const VectorView j, const Vector &cosza, const Array< Index > &sorted_index)
	Convolve source function with 1D sphere and integrate. More...
Index	grid_index_from_gp (const GridPos &gp)
	Get a discrete position from grid pos. More...
void	sorted_index_of_ppath_field (ArrayOfArrayOfIndex &sorted_index, ArrayOfVector &cosza, const ArrayOfPpath &ppath_field)
	Get sorting of zenith angles in field of ppath. More...

Detailed Description

Radiation field calculations.

Author

Richard Larsson

Date

2019-09-04

Definition in file radiation_field.cc.

Function Documentation

error_in_integrate()

void error_in_integrate	(	const String &	error_msg,
		const Numeric &	value_that_should_be_unity
	)

Throws an error if integration values are bad.

Parameters

[in]	error_msg	Error message to print
[in]	value_that_should_be_unity	Check value

Definition at line 30 of file radiation_field.cc.

References abs.

grid_index_from_gp()

Index grid_index_from_gp

(

const GridPos &

gp

)

Get a discrete position from grid pos.

Assumes the grid pos has been set to extend over the path

Parameters

[in]

gp

Grid position

Returns

Index Position

Definition at line 100 of file radiation_field.cc.

References GridPos::fd, and GridPos::idx.

Referenced by sorted_index_of_ppath_field().

integrate_convolved() [1/2]

Numeric integrate_convolved	(	const RadiationVector &	I,
		const Eigen::VectorXcd &	F,
		const Vector &	f
	)

Convolve intensity and line shape and integrate.

f must be sorted and in same order as F and I

F must be normalized

Parameters

[in]	I	Intensity vector
[in]	F	Line shape normalized
[in]	f	Frequency grid

Returns

Numeric Integrated absorption

Definition at line 61 of file radiation_field.cc.

References ConstVectorView::nelem().

integrate_convolved() [2/2]

Numeric integrate_convolved	(	const TransmissionMatrix &	T,
		const Eigen::VectorXcd &	F,
		const Vector &	f
	)

Convolve transmission and line shape and integrate.

f must be sorted and in same order as F and T

F must be normalized

Only consider [0, 0] position of T

Parameters

[in]	T	Transmission matrix
[in]	F	Line shape normalized
[in]	f	Frequency grid

Returns

Numeric Integrated absorption

Definition at line 74 of file radiation_field.cc.

References ConstVectorView::nelem().

integrate_zenith()

Numeric integrate_zenith	(	const VectorView	j,
		const Vector &	cosza,
		const Array< Index > &	sorted_index
	)

Convolve source function with 1D sphere and integrate.

Parameters

[in]	j	Source vector
[in]	cosza	cos of zenith angle
[in]	sorted_index	Order of zenith angles

Returns

Numeric Integrated source function

Definition at line 87 of file radiation_field.cc.

References ConstVectorView::nelem().

sorted_index_of_ppath_field()

void sorted_index_of_ppath_field	(	ArrayOfArrayOfIndex &	sorted_index,
		ArrayOfVector &	cosza,
		const ArrayOfPpath &	ppath_field
	)

Get sorting of zenith angles in field of ppath.

Parameters

[out]	sorted_index	Order of zenith angles
[out]	cosza	cos of zenith angle
[in]	ppath_field	As WSV

Definition at line 107 of file radiation_field.cc.

References data, DEG2RAD, get_sorted_indexes(), grid_index_from_gp(), max, Absorption::nelem(), and ARTS::Var::ppath_field().

test_integrate_convolved()

Numeric test_integrate_convolved	(	const Eigen::Ref< Eigen::VectorXcd >	F,
		const Vector &	f
	)

Integrate the line shape.

f must be sorted and in same order as F

Return should be 1.0 for a full line shape

Parameters

[in]	F	Line shape
[in]	f	Frequency grod

Returns

Numeric Integrated line shape

Definition at line 39 of file radiation_field.cc.

References ConstVectorView::nelem().

test_integrate_zenith()

Numeric test_integrate_zenith	(	const Vector &	cosza,
		const Array< Index > &	sorted_index
	)

Integrate cos(za) over the angles.

sorted_index must be in same order as cosza

Return should be 1.0 for a full set of zenith angles

Parameters

[in]	cosza	cos of zenith angle
[in]	sorted_index	Order of zenith angles

Returns

Numeric Integration

Definition at line 50 of file radiation_field.cc.

References ConstVectorView::nelem().