TeachingDemos (version 2.13)

digits: Return the digits that make up an integer

Description

Takes an integer or vector of integers and returns a vector, list, or matrix of the individual digits (decimal) that make up that number.

Usage

digits(x, n = NULL, simplify = FALSE)

Value

If x is of length 1 then a vector of the digits is returned.

If x is a vector and simplify is FALSE then a list of vectors is returned, one element for each element of x.

If x is a vector and simplify is TRUE then a matrix with 1 column for each element of x.

Arguments

x

An integer or vector of integers (if not integer, the fractional part will be ignored)

n

The number of digits to be returned, this can be used to place 0's in front of smaller numbers. If this is less than the number of digits then the last n digits are returned.

simplify

Should sapply simplify the list into a matrix

Author

Greg Snow

Details

This function transforms an integer (or real ignoring the fractional part) into the decimal digits that make of the decimal representation of the number using modular mathematics rather than converting to character, splitting the string, and converting back to numeric.

See Also

%%, %/%, strsplit

Examples

digits( 12345 )
digits( 567, n=5 )

x <- c(1, 23, 456, 7890)

digits(x)
digits(x, simplify=TRUE)