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The menu of named astronomical terms at a given age

Source: R/astro_terms.R
astro_terms.Rd

The menu of named astronomical terms at a given age

Usage

astro_terms(age_ma = 0, k_yr = NULL, data_dir = NULL)

Arguments

age_ma

Age in Ma (numeric, single value, 0 to 4429) at which the periods are computed; the precession constant used for the k-bearing (obliquity and precession) terms is taken from astrogeo22 at this age unless k_yr is given. Default=0.

k_yr

Your own precession constant k, as a period in years (numeric, > 0), used instead of the AstroGeo22 value at age_ma; NULL uses the AstroGeo22 value. Default=NULL.

data_dir

Folder that contains the data files AstroGeo22.txt and La04gisi.csv (character path); NULL uses the copy installed with the package. Default=NULL.

Value

data.frame from the longest to the shortest period