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folio

R-CMD-check Dependencies

r-universe CRAN Version CRAN checks CRAN Downloads

Project Status: Active – The project has reached a stable, usable state and is being actively developed.

DOI

Overview

Datasets for teaching quantitative approaches and modeling in archaeology and paleontology. This package provides several types of data related to broad topics (cultural evolution, radiocarbon dating, paleoenvironments, etc.), which can be used to illustrate statistical methods in the classroom (multivariate data analysis, compositional data analysis, diversity measurement, etc.).

This package is for teaching purposes only: some datasets may be outdated.

When using folio, you must cite the relevant publications for each dataset (see the documentation).

To cite folio in publications use:

Frerebeau N (2024). folio: Datasets for Teaching Archaeology and Paleontology. Université Bordeaux Montaigne, Pessac, France. doi:10.5281/zenodo.4476182 https://doi.org/10.5281/zenodo.4476182, R package version 1.5.0, https://packages.tesselle.org/folio/.

This package is a part of the tesselle project https://www.tesselle.org.

Installation

You can install the released version of folio from CRAN with:

install.packages("folio")

And the development version from GitHub with:

# install.packages("remotes")
remotes::install_github("tesselle/folio")

Usage

## Arnold and Libby's Curve of Knowns
## Replicate fig. 1 from Arnold and Libby (1949)
data("arnold1949")

fit <- lm(activity_found ~ age_expected, data = arnold1949)
summary(fit)
#> 
#> Call:
#> lm(formula = activity_found ~ age_expected, data = arnold1949)
#> 
#> Residuals:
#>        1        2        3        4        5        6 
#>  0.31341 -0.27618 -0.04573 -0.19344  0.09780  0.10414 
#> 
#> Coefficients:
#>                Estimate Std. Error t value Pr(>|t|)    
#> (Intercept)  12.2665215  0.2903726   42.24 1.88e-06 ***
#> age_expected -0.0011588  0.0000938  -12.35 0.000247 ***
#> ---
#> Signif. codes:  0 '***' 0.001 '**' 0.01 '*' 0.05 '.' 0.1 ' ' 1
#> 
#> Residual standard error: 0.2421 on 4 degrees of freedom
#> Multiple R-squared:  0.9745, Adjusted R-squared:  0.9681 
#> F-statistic: 152.6 on 1 and 4 DF,  p-value: 0.0002467

plot(
  x = arnold1949$age_expected,
  y = arnold1949$activity_found,
  type = "p",
  pch = 16,
  xlab = "Historical age (years)",
  ylab = "Specific activity (C/m/g)",
  main = "Samples of known ages"
)
segments(
  x0 = arnold1949$age_expected,
  y0 = arnold1949$activity_found - arnold1949$activity_found_error,
  x1 = arnold1949$age_expected,
  y1 = arnold1949$activity_found + arnold1949$activity_found_error
)
segments(
  x0 = arnold1949$age_expected - arnold1949$age_expected_error,
  y0 = arnold1949$activity_found,
  x1 = arnold1949$age_expected + arnold1949$age_expected_error,
  y1 = arnold1949$activity_found
)
abline(fit, col = "red")

Contributing

Please note that the folio project is released with a Contributor Code of Conduct. By contributing to this project, you agree to abide by its terms.

These binaries (installable software) and packages are in development.
They may not be fully stable and should be used with caution. We make no claims about them.
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