Check Values

Description

Returns TRUE if the value is finite or infinite, i.e., is neither missing (NA) nor not-a-number (Nan). It replicates the same behavior of the homonymous S+ function.

Usage

is.number(...)

Arguments

Details

is.number is TRUE if the value is finite or infinite, i.e., is neither missing ( NA) nor not-a-number ( NaN).

Author(s)

Knut M. Wittkowski kmw@rockefeller.edu

Examples

is.number(32)
# [1] TRUE
is.number(matrix(1:20, nrow=2))
#      [,1] [,2] [,3] [,4] [,5] [,6] [,7] [,8] [,9] [,10]
# [1,] TRUE TRUE TRUE TRUE TRUE TRUE TRUE TRUE TRUE  TRUE
# [2,] TRUE TRUE TRUE TRUE TRUE TRUE TRUE TRUE TRUE  TRUE
is.number('s')
# [1] FALSE