c14_combine: Combine 14C

In ananke: Quantitative Chronology in Archaeology

Combine 14C

Description

Combines radiocarbon dates.

Usage

c14_combine(values, errors, ...)

## S4 method for signature 'numeric,numeric'
c14_combine(values, errors, groups = NULL)

Arguments

values	A numeric vector giving the BP ages to be calibrated.
errors	A numeric vector giving the standard deviation of the ages to be calibrated.
...	Currently not used.
groups	A factor in the sense that as.factor(groups) defines the the groups to combine with. If NULL (the default), all dates are combined. NAs will be treated as isolated dates.

Value

A data.frame with the following columns:

groups	Group names
ages	Combined 14C ages
errors	Combined 14C standard deviations
chi2	Chi-squared test statistic
p	Chi-squared test p-value

Author(s)

N. Frerebeau

References

Ward, G. K. and Wilson, S. R. (1978). Procedures for Comparing and Combining Radiocarbon Age Determinations: A Critique. Archaeometry 20(1): 19‑31. \Sexpr[results=rd]{tools:::Rd_expr_doi("10.1111/j.1475-4754.1978.tb00208.x")}.

See Also

Other radiocarbon tools: F14C, c14_calibrate(), c14_curve(), c14_ensemble(), c14_plot, c14_sample(), c14_spd(), c14_uncalibrate(), rec_plot

Examples

## Replicate Ward and Wilson (1978), p. 28
polach1972 <- data.frame(
  samples = c("ANU-7", "ANU-7", "ANU-7", "W-1571", "ANU-5",
              "C-800", "L-698D", "FSU-3", "Tx-44"),
  ages = c(14550, 15000, 13700, 14650, 11700, 10860, 11840, 11245, 10700),
  errors = c(270, 600, 300, 500, 260, 410, 100, 450, 210)
)

c14_combine(
  values = polach1972$ages,
  errors = polach1972$errors,
  groups = polach1972$samples
)

ananke documentation built on June 8, 2025, 12:14 p.m.