pks_maths.h File Reference

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Functions
Int	nint (Double v)
	AIPS++ includes.
Double	anint (Double v)
Double	round (Double v, Double p)
	Round value v to the nearest integral multiple of precision p.
Float	median (const Vector< Float > &v, const Vector< Float > &wgt)
	Compute the weighted median value of an array.
Double	angularDist (Double lng1, Double lat1, Double lng2, Double lat2)
	Angular distance between two directions (angles in radian).
void	distPA (Double lng0, Double lat0, Double lng, Double lat, Double &dist, Double &pa)
	Generalized position angle of the field point (lng,lat) from reference point (lng0,lat0) and the angular distance between them (angles in radian).
void	eulerx (Double lng0, Double lat0, Double phi0, Double theta, Double phi, Double &lng1, Double &lat1)
	Euler angle based transformation of spherical coordinates (radian).
void	sol (Double mjd, Double &elng, Double &ra, Double &dec)
	Low precision coordinates of the sun.
void	gst (Double ut1, Double &gmst, Double &gast)
	Low precision Greenwich mean and apparent sidereal time (radian); UT1 is given in MJD form.
void	azel (const Vector< Double > position, Double ut1, Double ra, Double dec, Double &az, Double &el)
	Convert (ra,dec) to (az,el).
Double	solel (const Vector< Double > position, Double ut1)
	Compute the Solar elevation (radian) using the above functions.

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Function Documentation

Double angularDist	(	Double	lng1,
		Double	lat1,
		Double	lng2,
		Double	lat2
	)

Angular distance between two directions (angles in radian).

Double anint

(

Double

v

)

void azel	(	const Vector< Double >	position,
		Double	ut1,
		Double	ra,
		Double	dec,
		Double &	az,
		Double &	el
	)

Convert (ra,dec) to (az,el).

Position as a Cartesian triplet (m), UT1 in MJD form, and all angles in radian.

void distPA	(	Double	lng0,
		Double	lat0,
		Double	lng,
		Double	lat,
		Double &	dist,
		Double &	pa
	)

Generalized position angle of the field point (lng,lat) from reference point (lng0,lat0) and the angular distance between them (angles in radian).

void eulerx	(	Double	lng0,
		Double	lat0,
		Double	phi0,
		Double	theta,
		Double	phi,
		Double &	lng1,
		Double &	lat1
	)

Euler angle based transformation of spherical coordinates (radian).

void gst	(	Double	ut1,
		Double &	gmst,
		Double &	gast
	)

Low precision Greenwich mean and apparent sidereal time (radian); UT1 is given in MJD form.

Float median	(	const Vector< Float > &	v,
		const Vector< Float > &	wgt
	)

Compute the weighted median value of an array.

Int nint

(

Double

v

)

AIPS++ includes.

Global mathematical functions for single-dish data reduction.

Nearest integral value.

Double round	(	Double	v,
		Double	p
	)

Round value v to the nearest integral multiple of precision p.

void sol	(	Double	mjd,
		Double &	elng,
		Double &	ra,
		Double &	dec
	)

Low precision coordinates of the sun.

Double solel	(	const Vector< Double >	position,
		Double	ut1
	)

Compute the Solar elevation (radian) using the above functions.