Frag.object-class

make_cr_graph,Frag.object-method

make_crsr_graph,Frag.object-method

make_sr_graph,Frag.object-method

show,Frag.object-method

A class for archaeological "fragmentation" datasets. This class construction aims to ensure that the data have been properly built before performing the next steps of the analysis.
 A convenient constructor function, make_frag_object, is provided.

build data

Methods to analyse spatial units in archaeology from the relationships between refitting fragmented objects scattered in these units (e.g. stratigraphic layers). Graphs are used to model archaeological observations. The package is mainly based on the 'igraph' package for graph analysis. Functions can: 1) create, manipulate, and simulate fragmentation graphs, 2) measure the cohesion and admixture of archaeological spatial units, and 3) characterise the topology of a specific set of refitting relationships. Empirical datasets are provided as examples. Documentation about 'archeofrag' is provided by the vignette included in this package, by the accompanying scientific papers: Plutniak (2021, Journal of Archaeological Science, <doi:10.1016/j.jas.2021.105501>) and Plutniak (2022, Journal of Open Source Software, <doi:10.21105/joss.04335>). This package is complemented by a companion GUI application available at <https://analytics.huma-num.fr/Sebastien.Plutniak/archeofrag/>.

Sebastien Plutniak

archeofrag

Spatial Analysis in Archaeology from Refitting Fragments

Frag.object-class function

Objects can be created by calls of the form: 
<code>make_frag_object(cr, sr, fragments)</code>.

Objects from the Class

<dl>
 <dt><code>df.cr</code>:</dt>
<dd>Object of class <code>"matrix"</code> (<code>"data.frame"</code> are allowed and automatically converted)</dd> <dt><code>df.sr</code>:</dt>
<dd>Object of class <code>"matrix"</code> (<code>"data.frame"</code> are allowed and automatically converted)</dd> <dt><code>fragments.df</code>:</dt>
<dd>Object of class <code>"data.frame"</code></dd> <dt><code>frag_type</code>:</dt>
<dd>Object of class <code>"character"</code></dd> 
</dl>

Slots

<dl>
 <dt>make_cr_graph</dt>
<dd><code>signature(object = "Frag.object")</code>: Makes an undirected graph representing the "connection" relationships between archaeological fragments.</dd> <dt>make_sr_graph</dt>
<dd><code>signature(object = "Frag.object")</code>: Makes an undirected graph representing the "similarity" relationships between archaeological fragments.</dd> <dt>make_crsr_graph</dt>
<dd><code>signature(object = "Frag.object")</code>: Makes an undirected graph combining the "connection" and "similarity" relations between archaeological fragments.</dd> <dt>show</dt>
<dd><code>signature(object = "Frag.object")</code>: <code>show</code> method for Frag.object</dd> 
</dl>

Methods

Sebastien Plutniak &lt;sebastien.plutniak at posteo.net&gt;

Author

Class "Frag.object" — Frag.object-class

<dl>
 <dt><code>df.cr</code>:</dt>
<dd>Object of class <code>"matrix"</code> (<code>"data.frame"</code> are allowed and automatically converted)</dd>

 <dt><code>df.sr</code>:</dt>
<dd>Object of class <code>"matrix"</code> (<code>"data.frame"</code> are allowed and automatically converted)</dd>

 <dt><code>fragments.df</code>:</dt>
<dd>Object of class <code>"data.frame"</code></dd>

 <dt><code>frag_type</code>:</dt>
<dd>Object of class <code>"character"</code></dd>

 
</dl>

<dl>
 <dt>make_cr_graph</dt>
<dd><code>signature(object = "Frag.object")</code>: Makes an undirected graph representing the "connection" relationships between archaeological fragments.</dd>

 <dt>make_sr_graph</dt>
<dd><code>signature(object = "Frag.object")</code>: Makes an undirected graph representing the "similarity" relationships between archaeological fragments.</dd>

 <dt>make_crsr_graph</dt>
<dd><code>signature(object = "Frag.object")</code>: Makes an undirected graph combining the "connection" and "similarity" relations between archaeological fragments.</dd>

 <dt>show</dt>
<dd><code>signature(object = "Frag.object")</code>: <code>show</code> method for Frag.object</dd>

 
</dl>

Frag.object-class: Class `"Frag.object"`

Description

Arguments

Objects from the Class

Slots

Methods

Author

See Also

Examples