filterDates

Filter archaeological site coordinates and dates, retaining only the
earliest radiocarbon date per site.

Inspired by space-time regressions often performed to assess
the expansion of the Neolithic from the Near East to Europe (Pinhasi et
al. 2005 <doi:10.1371/journal.pbio.0030410>). Test for significant
correlations between the (earliest) radiocarbon dates of archaeological
sites and their respective distances from a hypothetical center of origin.
Both ordinary least squares (OLS) and reduced major axis (RMA) methods
are supported (Russell et al. 2014 <doi:10.1371/journal.pone.0087854>).
It is also possible to iterate over many sites to identify the most likely
origin.

Jonas Gregorio de Souza

spDates

Analysis of Spatial Gradients in Radiocarbon Dates

filterDates function

<dl><dt>sites</dt>
<dd>A SpatialPointsDataFrame object with archaeological sites and
associated radiocarbon ages.</dd>
<dt>c14bp</dt>
<dd>A string. Name of the field with the radiocarbon ages in C14 BP
format.</dd></dl>

Arguments

Filter archaeological site coordinates and dates, retaining only the
earliest radiocarbon date per site. — filterDates

<dl>

<dt>sites</dt>
<dd>A SpatialPointsDataFrame object with archaeological sites and
associated radiocarbon ages.</dd>


<dt>c14bp</dt>
<dd>A string. Name of the field with the radiocarbon ages in C14 BP
format.</dd>

</dl>

filterDates: Filter archaeological site coordinates and dates, retaining only the earliest radiocarbon date per site.

Description

Usage

Value

Arguments