mediansdevn
The mediansdevn function returns the median value and standard deviation of a general lua table that may contain non-numeric values, named keys, and sub-tables. Only numeric values found in the table are used in the calculation. The mediann function returns only the medianvalue. The related mediansdev function calculates the median and standard deviation of a 1-dimensional array, CImage, or list of numbers. Since an array is a specific type of table that contains only numbers or sub-tables, this function can also be used for arrays.
nMedian, nStdDev = mediansdevn( tbl )
tbl is a general lua table.
nMeian is the median value of the data.
nStdDev is the standard deviation of the data.
The following script returns the median and standard deviation of a 1-dimensional array containing 1 million random numbers.
|
-- create an array of numbers |
|
-- find the median & standard deviation |
|
-- list the result |
The next example computes the median and standard deviation of an ugly, complex table:
|
|
|
-- find the meian and standard deviation |
|
-- result: M = 5.5, based on only 4 numbers |
Table and Array Functions, mediann, meann, sdevn, meansdev
Mira Pro x64 Script User's Guide, Copyright Ⓒ 2023 Mirametrics,
Inc. All Rights Reserved.