leading_zero: Function to add leading zeroes to maintain fixed width.
Description
This function ensures that fixed width data is the right
length by padding zeroes to the front of values. This is a common problem
with fixed width data after importing into R as non-character type.
Usage
leading_zero(x, digits = 2)
Value
A character vector of length digits
Arguments
x
a vector of numeric data that should be fixed width but is
missing leading zeroes.
digits
an integer representing the desired width of x
Author
Jason P. Becker
Jared E. Knowles
Details
If x contains negative values then the width specified by digits
will include one space taken up for the negative sign. The function does not
trim values that are longer than digits, so the vector produced will not
have a uniform width if nchar(x) > d