archeofrag (version 1.2.0)

LiangAbu: Dataset: Archeological relationships between pottery fragments in Liang Abu

Description

Liang Abu is an archaeological site in East Kalimantan, Indonesia. This dataset describes the relationships between pottery fragments found during excavations (2009-2012). Two types of relationships are defined.

• A connection relationship refers to a physical connection between two fragments that were part of the same object.

• A similarity relationship between fragments is defined if there is an acceptable likelihood that those fragments were part of the same object.

The dataset is composed of three tables:

• liangabu.connection: "connection" relationships between fragments.

• liangabu.similarity: "similarity" relationships between fragments.

• liangabu.fragments: information about the fragments.

Usage

data(LiangAbu)

Format

• liangabu.connection is a 56x2 matrix. Each line describes a connection relationship between two fragments. Their unique identifiers are given in column 'id1' and in column 'id', respectively.

• liangabu.similarity is a 147x2 matrix. Column 'id' gives a fragment unique identifier, column 'su.id' gives a unique identifier for the group of similar fragments it belongs to (similarity unit).

• liangabu.fragments is 177x11 data frame:

  • id: fragment unique identifier

  • layer: stratigraphic layer

  • zmin: minimal depth in centimetres where the fragment was found

  • zmax: maximal depth in centimetres where the fragment was found

  • square: grid square where the fragment was found

  • square.x: x coordinate in centimetres of the middle of the grid square

  • square.y: y coordinate in centimetres of the middle of the grid square

  • thickness: thickness of the fragments in millimetres

  • length: length of the fragments in millimetres

  • thickness.by.length: product of the thickness by the length

  • sherd.type: type of pottery sherd

References

• Plutniak, Sebastien, "The Strength of Parthood Ties. Modelling Spatial Units and Fragmented Objects with the TSAR Method - Topological Study of Archaeological Refitting", Journal of Archaeological Science, vol. 136, 105501, doi: 10.1016/j.jas.2021.105501.

• Plutniak, Sebastien, "Refitting pottery fragments from the Liang Abu rockshelter, Borneo", Zenodo, doi: 10.5281/zenodo.4719578.

• Plutniak, Sebastien, Astolfo Araujo, Simon Puaud, Jean-Georges Ferrie, Adhi Agus Oktaviana, Bambang Sugiyanto, Jean-Michel Chazine et Francois-Xavier Ricaut. 2015. "Borneo as a half empty pot: Pottery assemblage from Liang Abu, East Kalimantan, Quaternary International, doi: 10.1016/j.quaint.2015.11.080.

Examples

data(LiangAbu)
head(liangabu.fragments)