First Digit
Last Digit
Last Two Digits *
These three mapping formats can be applied to numeric values to extract the first or last digits of the number.
These three mapping formats have various applications in detecting whether a set of numbers is say genuine observations or the figment of someone's fertile imagination.
The first digit of a number usually follows a pattern called Benford's Law, which roughly states that 1 should be the first in 30% of the values, 2 in 18% and 3 in 12% etc.
For a full understanding of this, search the World Wide Web for 'Benford's Law' using a search engine like Google.
The applications of this are simple and far-reaching in that if a set of numbers doesn't follow this rule when expected, something is amiss. Perhaps fraud!
The last digits of a number often have properties of their own. Take for instance blood pressure readings which are traditionally often done to the nearest 5 or increasingly now to the nearest 2.
Thus, by mapping the last digit you can identify readings not done to the system you require or where an incorrect value has been entered. e.g. 7!
As with the first digit, if the last digit does not follow the expected pattern, the the data may be badly-entered, suspect or fraudulent.
Note that mapping formats indicated with a red asterisk (*) are only available in Daisy Lite Plus or more powerful versions.