archeofrag (version 1.2.0)

make_cr_graph: Make a "connection" relationships graph.

Description

Takes a frag.object and returns an undirected graph representing the "connection" relationships between archaeological fragments. A "connection" relationship refers to a physical connection between two fragments that were part of the same object.

Usage

make_cr_graph(object)

Value

An undirected igraph class graph. The "frag_type" graph attribute is set with the "connection" character value.

Arguments

object

A frag.object object.

Author

Sebastien Plutniak <sebastien.plutniak at posteo.net>

Details

Returns an undirected graph of "igraph" class. The "fragments" data frame of the frag.object is used to set the vertices attributes.

See Also

make_frag_object

Examples

cr.df <- matrix(c(1,2, 1,3, 2,3, 4,5, 4,6, 7,8), ncol=2, byrow=TRUE)
sr.df <- matrix( c(1,1, 9,1, 10,1, 11,2, 12,2, 13,2), ncol=2, byrow=TRUE)
fragments.df <- data.frame(1:13, letters[1:13]) 

cr_g <- make_frag_object(cr=cr.df, fragments=fragments.df)
crsr_g <- make_frag_object(cr=cr.df, sr=sr.df, fragments=fragments.df)

make_cr_graph(cr_g)
make_cr_graph(crsr_g)