textshape (version 1.7.5)

tidy_matrix: Convert a Matrix into Tidy Form

Description

tidy_matrix - Converts matrices into a tidy data set. Essentially, a stacking of the matrix columns and repeating row/column names as necessary.

tidy_adjacency_matrix - A wrapper for tidy_matrix with the row.name, col.name, & value.name all set to "from","to", & "n", assuming preparation for network analysis.

Usage

tidy_matrix(x, row.name = "row", col.name = "col", value.name = "value", ...)
tidy_adjacency_matrix(x, ...)

Value

Returns a tidied data.frame.

Arguments

x

A matrix.

row.name

A string to use for the row names that are now a column.

col.name

A string to use for the column names that are now a column.

value.name

A string to use for the values that are now a column.

...

ignored.

Examples

mat <- matrix(1:16, nrow = 4,
    dimnames = list(LETTERS[1:4], LETTERS[23:26])
)

mat
tidy_matrix(mat)


data(simple_dtm)
tidy_matrix(as.matrix(simple_dtm), 'doc', 'term', 'n')

X <- as.matrix(simple_dtm[1:10, 1:10])
tidy_adjacency_matrix(crossprod(X))
tidy_adjacency_matrix(crossprod(t(X)))