qdap (version 2.4.6)

adjacency_matrix: Takes a Matrix and Generates an Adjacency Matrix

Description

Takes a matrix (wfm) or termco object and generates an adjacency matrix for use with the igraph package.

Usage

adjacency_matrix(matrix.obj)
adjmat(matrix.obj)

Value

Returns list:

boolean

A Boolean matrix

adjacency

An adjacency matrix. Diagonals are the total (sum) number of occurrences a variable had

shared

An adjacency matrix with no diagonal and the upper triangle replaced with NA

sum

The diagonal of the adjacency matrix; the total (sum) number of occurrences a variable had

Arguments

matrix.obj

A matrix object, preferably, of the class "termco" generated from termco, termco_d or termco_c.

See Also

dist

Examples

if (FALSE) {
words <- c(" you", " the", "it", "oo")
Terms <- with(DATA, termco(state, list(sex, adult), words))
Terms
adjacency_matrix(Terms)

wordLIST <- c(" montague", " capulet", " court", " marry")
raj.termco <- with(raj.act.1, termco(dialogue, person, wordLIST))
raj.adjmat <- adjmat(raj.termco)
names(raj.adjmat)  #see what's available from the adjacency_matrix object
library(igraph)
g <- graph.adjacency(raj.adjmat$adjacency, weighted=TRUE, mode ="undirected")
g <- simplify(g)
V(g)$label <- V(g)$name
V(g)$degree <- degree(g)
plot(g, layout=layout.auto(g))
}