frag.get.layers {archeofrag}

Extracts the subgraph of each selected stratigraphic layer.

Description

Extracts the subgraph of each selected stratigraphic layer (or any other type of archaeological spatial unit).

Usage

frag.get.layers(graph, layer.attr, sel.layers)

Arguments

graph

An undirected igraph object.

layer.attr

Character. The name of the vertices attribute giving the layer of each fragment.

sel.layers

Character. The identifier(s) of the stratigraphic layers to retrieve.

Details

This function is only a convenient function to extract the subgraphs of selected stratigraphic layers (or any other type of archaeological spatial unit). A graph is created for each layer in the vertex attribute given by the layer.attr argument.

Value

A list with a graph for each selected stratigraphic layer.

Author(s)

Sebastien Plutniak <sebastien.plutniak at posteo.net>

Examples

g <- frag.simul.process(n.components=20, vertices=50, disturbance = .15)
igraph::V(g)$layers <- c(rep("layer1", 20), rep("layer2", 20), rep("layer3", 10))
frag.get.layers(g, layer.attr="layers", sel.layers=c("layer1", "layer2"))