check_covariance_matrix {oeli}

Check if an argument is a covariance matrix

Description

This function checks whether the input is a symmetric, real matrix that fulfills the covariance matrix properties.

Usage

check_covariance_matrix(x, dim = NULL, tolerance = sqrt(.Machine$double.eps))

assert_covariance_matrix(
  x,
  dim = NULL,
  tolerance = sqrt(.Machine$double.eps),
  .var.name = checkmate::vname(x),
  add = NULL
)

test_covariance_matrix(x, dim = NULL, tolerance = sqrt(.Machine$double.eps))

Arguments

x

Object to check.

dim

An integer, the matrix dimension.

tolerance

A non-negative numeric tolerance value.

.var.name

[character(1)]
Name of the checked object to print in assertions. Defaults to the heuristic implemented in vname.

add

[AssertCollection]
Collection to store assertion messages. See AssertCollection.

Value

Compare to check_matrix.