full: Full symmetric matrix

In ecodist: Dissimilarity-Based Functions for Ecological Analysis

Full symmetric matrix

Description

Convert a column order distance matrix to a full symmetric matrix.

Usage

  full(v)

Arguments

v	lower-triangular column order distance matrix.

Details

Converts a column order lower-triangular distance matrix as written by R functions into a symmetric matrix. Note that lower() used on a 1x1 matrix will return the single element, which may not be the correct behavior in all cases, while full() used on a single element will return a 2x2 matrix.

Value

full symmetric matrix.

Author(s)

Sarah Goslee

See Also

lower, fixdmat

Examples

# Given a vector:
x.vec <- seq_len(6)
x.vec

# Make an R-style column order symmetric matrix
full(x.vec)

# Extract the lower triangle from a symmetric matrix
# in column order
lower(full(x.vec))

# Convert to or from a row order symmetric matrix
fixdmat(x.vec)
lower(fixdmat(x.vec))

fixdmat(c(1, 2, 4, 3, 5, 6))

ecodist documentation built on Nov. 2, 2023, 6:01 p.m.