assert_is_zero_matrix

0th

Percentile

Is the input a zero matrix

Checks that the input is a matrix of zeroes.

Usage
assert_is_zero_matrix(x, tol = 100 * .Machine$double.eps,
  severity = getOption("assertive.severity", "stop"))

is_zero_matrix(x, tol = 100 * .Machine$double.eps, .xname = get_name_in_parent(x))

Arguments
x

Input to check.

tol

Absolute values smaller than tol are not considered.

severity

How severe should the consequences of the assertion be? Either "stop", "warning", "message", or "none".

.xname

Not intended to be used directly.

Value

TRUE if the input is all zeroes (after coercion to be a matrix).

Aliases
  • assert_is_zero_matrix
  • is_zero_matrix
Examples
# NOT RUN {
x <- matrix(numeric(9), 3)
is_zero_matrix(x)
x[1, 1] <- 100 * .Machine$double.eps
is_zero_matrix(x)
x[2, 2] <- 101 * .Machine$double.eps
is_zero_matrix(x)
# }
Documentation reproduced from package assertive.matrices, version 0.0-2, License: GPL (>= 3)

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