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skyscapeR

skyscapeR is an open source R package for data reduction, visualization and analysis in skyscape archaeology, archaeoastronomy and cultural astronomy. Its aim is to be a fully-fledged, transparent and peer-reviewed package offering a robust set of quantitative methods while still retaining simplicity of use.

For an introduction to skyscapeR check the official vignette.

Installation

Just do:

if(!requireNamespace("devtools", quietly = TRUE)) { install.packages("devtools") }
devtools::install_github('f-silva-archaeo/skyscapeR')

Release Notes

v1.0.0 notes

New CRAN release: major overhaul of package with new functionality throughout.

v0.2.2 CRAN release

The latest release version (v0.2.2) is available on CRAN. This Git contains the latest development version which has several bug fixes and additional tools (some of which might not have been fully tested).

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Version

Install

install.packages('skyscapeR')

Monthly Downloads

155

Version

1.0.0

License

GPL (>= 2)

Maintainer

Silva Fabio

Last Published

October 29th, 2021

Functions in skyscapeR (1.0.0)

Equinoctial Full Moons

Recumbent Stone Circle Data

Calculates declination from azimuth and altitude measurements

bernoulli.trial

Execute a (series of) Bernoulli trial(s)

Convert discrete azimuth measurements into probability distributions

Declination of the anti-zenith sun for a given location

Create and download horizon data from HeyWhatsThat

Create skyscapeR.horizon object from Az/Alt data

Retrieves horizon altitude for a given azimuth from a given horizon profile

Returns the high-density region of a probability distribution

Converts p-value into symbol

Estimates magnetic declination (difference between true and magnetic north) based on IGRF 12th gen model

Converts day-month in 'MM-DD' format to a more readable format

Declination of the sun at the Equinox

Declination of northern minor Lunar Extreme for a given year

Computes obliquity of the ecliptic

(Defunct) Computes declination curvigram

Declination of December Solstice for a given year

Corrected parallax for a given location and object altitude

Calculate visible path of celestial object at given location

Computes the phase of the moon

Declination of northern major Lunar Extreme for a given year

plot.skyscapeR.horizon

Plot horizon data

plot.skyscapeR.sigTest

Plot significance test of orientations

Data reduction for compass measurements

plot.skyscapeR.pdf

Plot orientation probability distributions

reduct.theodolite

Data reduction for theodolite measurements using the sun-sight method

plot.skyscapeR.spd

Plot orientation summed probability density

plot.skyscapeR.starphases

Plot stellar phase and seasonality

Polar plot of orientations (azimuths)

See and change the global variables used by skyscapeR

Create a simplistic sketch of the sky at a given moment in time

(Defunct) Perform a null hypothesis significance test of a given curvigram

Computes position of Solar System bodies in equatorial coordinates

Computes the rising and setting azimuth, declination and time of a Solar System object for a given location and day

Declination of June Solstice for a given year

Bar plot of orientations (declination)

Exports a skyscapeR.horizon object into Stellarium format

Converts Julian date and time (in any timezone) to julian date

Find celestial targets within declination and time ranges

Coordinate-transform azimuth prob distributions into declination prob distributions

spatial.equinox

Declination of the spatial equinox for a given location

Summed probability density (SPD)

Significance test against the null hypothesis of random orientation

print.skyscapeR.sigTest

Prints significance test results

Converts degree measurements in deg-min-sec (<U+00BA> ' ") format into decimal-point degree format.

Declination of southern minor Lunar Extreme for a given year

Returns the azimuth of the sun at a given time from a specific location

Declination of southern major Lunar Extreme for a given year

Create skyscapeR.star object

Creates a skyscapeR.object for plotting of celestial objects at given epoch

Converts date and time numeric values to a single string

Converts date and time (in any timezone) to Julian date

Declination of the zenith sun for a given location

Calculate the seasons and phase type of a star

Cork and Kerry Stone Row Data

Converts year number (epoch) to calendar year

Download horizon data from HeyWhatsThat