R: R Bindings to the 'Astronomy Engine' C Library

# R Bindings to the 'Astronomy Engine' C Library

## Documentation for package ‘astronomyengine’ version 0.1.0

- DESCRIPTION file
- Package NEWS
- Package README

## Help Pages

astro_angle_from_sun | Angle from the Sun
astro_bary_state | Barycentric position and velocity vectors
astro_body | Celestial body codes
astro_body_code | Get the integer code for a celestial body by name
astro_body_name | Get the name of a celestial body
astro_combine_rotation | Combine two rotation matrices
astro_current_time | Current UTC time according to Astronomy Engine
astro_ecliptic | Convert J2000 equatorial coordinates to ecliptic coordinates
astro_ecliptic_longitude | Heliocentric ecliptic longitude of a body
astro_elongation | Elongation of a celestial body
astro_equator | Topocentric equatorial coordinates of a celestial body
astro_equator_from_vector | Convert Cartesian Vector to Equatorial Coordinates
astro_geo_vector | Geocentric position vector of a celestial body
astro_helio_vector | Heliocentric position vector of a celestial body
astro_horizon | Horizontal coordinates of a celestial body
astro_horizon_from_vector | Convert Cartesian Vector to Horizontal Coordinates
astro_hour_angle | Calculate the hour angle of a body
astro_identity_matrix | Create an identity rotation matrix
astro_illumination | Illumination data for a celestial body
astro_inverse_rotation | Calculate the inverse of a rotation matrix
astro_make_time | Create an astronomical time value
astro_moon_phase | Moon Phase Angle
astro_next_lunar_eclipse | Find the next lunar eclipse in a series
astro_next_moon_quarter | Find Next Lunar Quarter
astro_next_transit | Search for the next transit of Mercury or Venus
astro_observer_gravity | Observer gravitational acceleration
astro_observer_state | Observer position and velocity vector from geographic coordinates
astro_observer_vector | Observer position vector from geographic coordinates
astro_pair_longitude | Ecliptic longitude of one body relative to another
astro_pivot | Re-orient a rotation matrix by pivoting around an axis
astro_rotate_vector | Apply a rotation to a vector
astro_rotation_ECL_EQD | Rotation Matrix from J2000 Ecliptic to Equatorial of-Date
astro_rotation_ECL_EQJ | Rotation Matrix from ECL to EQJ
astro_rotation_ECL_HOR | Rotation Matrix from ECL to HOR
astro_rotation_ECT_EQD | Rotation Matrix from ECT to EQD
astro_rotation_ECT_EQJ | Rotation Matrix from ECT to EQJ
astro_rotation_EQD_ECL | Rotation Matrix from Equatorial of-Date to J2000 Ecliptic
astro_rotation_EQD_ECT | Rotation Matrix from EQD to ECT
astro_rotation_EQD_EQJ | Rotation Matrix from EQD to EQJ
astro_rotation_EQD_HOR | Rotation Matrix from EQD to HOR
astro_rotation_EQJ_ECL | Rotation Matrix from EQJ to ECL
astro_rotation_EQJ_ECT | Rotation Matrix from EQJ to ECT
astro_rotation_EQJ_EQD | Rotation Matrix from EQJ to EQD
astro_rotation_EQJ_GAL | Rotation Matrix from EQJ to GAL
astro_rotation_EQJ_HOR | Rotation Matrix from J2000 Equatorial to Horizontal
astro_rotation_GAL_EQJ | Rotation Matrix from GAL to EQJ
astro_rotation_HOR_ECL | Rotation Matrix from HOR to ECL
astro_rotation_HOR_EQD | Rotation Matrix from HOR to EQD
astro_rotation_HOR_EQJ | Rotation Matrix from Horizontal to J2000 Equatorial
astro_search_altitude | Search for when a body reaches a specified altitude
astro_search_hour_angle | Search for when a body reaches a specified hour angle
astro_search_lunar_eclipse | Search for a lunar eclipse
astro_search_max_elongation | Search for maximum elongation
astro_search_moon_phase | Search for a Specific Moon Phase
astro_search_moon_quarter | Find First Lunar Quarter
astro_search_peak_magnitude | Search for peak magnitude of Venus
astro_search_relative_longitude | Search for relative longitude event between Earth and another planet
astro_search_rise_set | Search for the next rise or set time of a celestial body
astro_search_sun_longitude | Search for Sun longitude
astro_search_transit | Search for a transit of Mercury or Venus
astro_seasons | Equinoxes and Solstices for a Given Year
astro_sphere_from_vector | Convert Cartesian Vector to Spherical Coordinates
astro_sun_position | Sun's position in ecliptic coordinates
astro_vector_from_horizon | Convert Horizontal Coordinates to Cartesian Vector
astro_vector_from_sphere | Convert Spherical Coordinates to Cartesian Vector
astro_vector_observer | Geographic coordinates from observer position vector
next_global_solar_eclipse | Search for the next global solar eclipse
next_local_solar_eclipse | Search for the next local solar eclipse
next_lunar_apsis | Find the next lunar apsis event
next_planet_apsis | Find the next planetary apsis in a series
search_global_solar_eclipse | Search for a global solar eclipse
search_local_solar_eclipse | Search for a local solar eclipse
search_lunar_apsis | Search for lunar apsis events
search_planet_apsis | Search for the next planetary apsis