![[attach.png]](idldoc-resources/attach.png)
./
leading_digit.pro
topleading_digit
result = leading_digit(in)
return the leading digit of a number. E.g. 1234 -> 1, 0.345 -> 3. This is used in the computation of Benford's Law (http://en.wikipedia.org/wiki/Benford%27s_law)
Return value
the leading digit of the number
Parameters
- in in required
number (or array of numbers) to find the leading digit of
Examples
IDL> print, leading_digit([0.0034, 6123, 0, -0.12343])
3 6 0 1
Author information
- History:
Mon Jun 16 16:36:17 2008, Brian Larsen written and tested
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| Lines: | 6 |
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File attributes
| Modifcation date: | Tue Sep 9 13:58:27 2008 |
| Lines: | 37 |