Check if an argument is a single numeric value

Description

Check if an argument is a single numeric value

Usage

 1
 2
 3
 4
 5
 6
 7
 8
 9
10
11
12
13
14
15
16
17
18
19
20
checkNumber(x, na.ok = FALSE, lower = -Inf, upper = Inf, finite = FALSE,
  null.ok = FALSE)

check_number(x, na.ok = FALSE, lower = -Inf, upper = Inf,
  finite = FALSE, null.ok = FALSE)

assertNumber(x, na.ok = FALSE, lower = -Inf, upper = Inf,
  finite = FALSE, null.ok = FALSE, .var.name = vname(x), add = NULL)

assert_number(x, na.ok = FALSE, lower = -Inf, upper = Inf,
  finite = FALSE, null.ok = FALSE, .var.name = vname(x), add = NULL)

testNumber(x, na.ok = FALSE, lower = -Inf, upper = Inf, finite = FALSE,
  null.ok = FALSE)

test_number(x, na.ok = FALSE, lower = -Inf, upper = Inf, finite = FALSE,
  null.ok = FALSE)

expect_number(x, na.ok = FALSE, lower = -Inf, upper = Inf,
  finite = FALSE, null.ok = FALSE, info = NULL, label = vname(x))

Arguments

x

[any]
Object to check.

na.ok

[logical(1)]
Are missing values allowed? Default is FALSE.

lower

[numeric(1)]
Lower value all elements of x must be greater than.

upper

[numeric(1)]
Upper value all elements of x must be lower than.

finite

[logical(1)]
Check for only finite values? Default is FALSE.

null.ok

[logical(1)]
If set to TRUE, x may also be NULL. In this case only a type check of x is performed, all additional checks are disabled.

.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.

info

[character(1)]
Extra information to be included in the message for the testthat reporter. See expect_that.

label

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

Details

This function does not distinguish between NA, NA_integer_, NA_real_, NA_complex_ NA_character_ and NaN.

Value

Depending on the function prefix: If the check is successful, the functions assertNumber/assert_number return x invisibly, whereas checkNumber/check_number and testNumber/test_number return TRUE. If the check is not successful, assertNumber/assert_number throws an error message, testNumber/test_number returns FALSE, and checkNumber returns a string with the error message. The function expect_number always returns an expectation.

See Also

Other scalars: checkCount, checkFlag, checkInt, checkScalarNA, checkScalar, checkString

Examples

1
2
testNumber(1)
testNumber(1:2)

Want to suggest features or report bugs for rdrr.io? Use the GitHub issue tracker.