R packages by nfrerebeau

khroma - Colour Schemes for Scientific Data Visualization

Color schemes ready for each type of data (qualitative, diverging or sequential), with colors that are distinct for all people, including color-blind readers. This package provides an implementation of Paul Tol (2018) and Fabio Crameri (2018) <doi:10.5194/gmd-11-2541-2018> color schemes for use with 'graphics' or 'ggplot2'. It provides tools to simulate color-blindness and to test how well the colors of any palette are identifiable. Several scientific thematic schemes (geologic timescale, land cover, FAO soils, etc.) are also implemented.

Last updated 3 months ago

accessibilitycolour-schemesdata-visualization

11.14 score 203 stars 10 packages 448 scripts 1.3k downloads

tabula - Analysis and Visualization of Archaeological Count Data

An easy way to examine archaeological count data. This package provides several tests and measures of diversity: heterogeneity and evenness (Brillouin, Shannon, Simpson, etc.), richness and rarefaction (Chao1, Chao2, ACE, ICE, etc.), turnover and similarity (Brainerd-Robinson, etc.). It allows to easily visualize count data and statistical thresholds: rank vs abundance plots, heatmaps, Ford (1962) and Bertin (1977) diagrams, etc.

Last updated 3 months ago

archaeological-sciencearchaeologydata-visualization

8.37 score 35 stars 2 packages 51 scripts 439 downloads

aion - Archaeological Time Series

A toolkit for archaeological time series and time intervals. This package provides a system of classes and methods to represent and work with archaeological time series and time intervals. Dates are represented as "rata die" and can be converted to (virtually) any calendar defined by Reingold and Dershowitz (2018) <doi:10.1017/9781107415058>. This packages offers a simple API that can be used by other specialized packages.

Last updated 10 days ago

archaeological-sciencearchaeologychronologytime-series

7.63 score 10 stars 5 packages 19 scripts 490 downloads

kairos - Analysis of Chronological Patterns from Archaeological Count Data

A toolkit for absolute and relative dating and analysis of chronological patterns. This package includes functions for chronological modeling and dating of archaeological assemblages from count data. It provides methods for matrix seriation. It also allows to compute time point estimates and density estimates of the occupation and duration of an archaeological site.

Last updated 4 months ago

archaeological-sciencearchaeologychronologymatrix-seriation

7.15 score 17 stars 2 packages 14 scripts 311 downloads

dimensio - Multivariate Data Analysis

Simple Principal Components Analysis (PCA) and (Multiple) Correspondence Analysis (CA) based on the Singular Value Decomposition (SVD). This package provides S4 classes and methods to compute, extract, summarize and visualize results of multivariate data analysis. It also includes methods for partial bootstrap validation described in Greenacre (1984, ISBN: 978-0-12-299050-2) and Lebart et al. (2006, ISBN: 978-2-10-049616-7).

Last updated 16 days ago

data-analysismultivariate-analysis

7.12 score 10 stars 4 packages 8 scripts 353 downloads

nexus - Sourcing Archaeological Materials by Chemical Composition

Exploration and analysis of compositional data in the framework of Aitchison (1986, ISBN: 978-94-010-8324-9). This package provides tools for chemical fingerprinting and source tracking of ancient materials.

Last updated 1 months ago

archaeological-sciencearchaeologyarchaeometrycompositional-dataprovenance-studies

6.90 score 5 stars 2 packages 24 scripts 189 downloads

arkhe - Tools for Cleaning Rectangular Data

A dependency-free collection of simple functions for cleaning rectangular data. This package allows to detect, count and replace values or discard rows/columns using a predicate function. In addition, it provides tools to check conditions and return informative error messages.

Last updated 16 days ago

data-cleaningstatistics

6.13 score 10 stars 10 packages 2 scripts 773 downloads

alkahest - Pre-Processing XY Data from Experimental Methods

A lightweight, dependency-free toolbox for pre-processing XY data from experimental methods (i.e. any signal that can be measured along a continuous variable). This package provides methods for baseline estimation and correction, smoothing, normalization, integration and peaks detection. Baseline correction methods includes polynomial fitting as described in Lieber and Mahadevan-Jansen (2003) <doi:10.1366/000370203322554518>, Rolling Ball algorithm after Kneen and Annegarn (1996) <doi:10.1016/0168-583X(95)00908-6>, SNIP algorithm after Ryan et al. (1988) <doi:10.1016/0168-583X(88)90063-8>, 4S Peak Filling after Liland (2015) <doi:10.1016/j.mex.2015.02.009> and more.

Last updated 4 months ago

archaeometryspectroscopy

5.48 score 5 stars 10 scripts 236 downloads

isopleuros - Ternary Plots

Ternary plots made simple. This package allows to create ternary plots using 'graphics'. It provides functions to display the data in the ternary space, to add or tune graphical elements and to display statistical summaries. It also includes common ternary diagrams which are useful for the archaeologist (e.g. soil texture charts, ceramic phase diagram).

Last updated 22 hours ago

archaeological-sciencearchaeometrydata-visualizationternary-plots

5.45 score 9 stars 3 packages 3 scripts 200 downloads

folio - Datasets for Teaching Archaeology and Paleontology

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.).

Last updated 3 months ago

archaeological-sciencearchaeologydatasetspaleontology

5.19 score 13 stars 1 packages 2 scripts 459 downloads

tesselle - Easily Install and Load 'tesselle' Packages

Easy install and load key packages from the 'tesselle' suite in a single step. The 'tesselle' suite is a collection of packages for research and teaching in archaeology. These packages focus on quantitative analysis methods developed for archaeology. The 'tesselle' packages are designed to work seamlessly together and to complement general-purpose and other specialized statistical packages. These packages can be used to explore and analyze common data types in archaeology: count data, compositional data and chronological data. Learn more about 'tesselle' at <https://www.tesselle.org>.

Last updated 12 months ago

archaeological-sciencearchaeology

3.85 score 7 stars 4 scripts 148 downloads