This script counts the frequencies of individual ASCII characters in a single column in a SAS data set and then prints an easy-to-read report.
My initial motivation relates to delimiters. By default bulkloading data from Netezza to SAS (which is very fast) uses the pipe character as a delimiter, but my data set contained values with the pipe character, so this macro identifies alternative delimiters.
Another potential use is cracking a message encrypted using a simple letter substitution cipher.
To begin, this code creates an example data set courtesy of William Shakespeare.
