[<<Previous Entry]
[^^Up^^]
[Next Entry>>]
[Menu]
[About The Guide]
FT_AMEDIAN()
Find middle value in array, or average of two middle values
------------------------------------------------------------------------------
Syntax
FT_AMEDIAN( <aArray> [, <nStart> [, <nEnd> ] ] )
-> nMedian
Arguments
<aArray> is the array containing the elements to be averaged.
<nStart> is the first array element to include,
defaults to first element.
<nEnd> is the last array element to include,
defaults to last element.
Returns
The median average of the array elements
Description
This function sorts the elements of a numeric array and
then returns the value in the middle element of the sorted
array. If there is no exact middle value, then it returns
the average of the two middle values. Half of the elements
are > median and half are < median. A median average may
more reflect a more useful average when there are extreme
values in the set.
Examples
FT_AMEDIAN( aArray ) // Return Median for entire array
FT_AMEDIAN( aArray, 2) // Return Median for elements from 2 to end
FT_AMEDIAN( aArray, ,9) // Return Median for 1st 9 elements
FT_AMEDIAN( aArray,8,40 ) // Return Median for elements 8 to 40
Source: AMEDIAN.PRG
Author: Ralph Oliver, TRANSCOM SYSTEMS
This page created by ng2html v1.05, the Norton guide to HTML conversion utility.
Written by Dave Pearson