37 lines
863 B
Plaintext
37 lines
863 B
Plaintext
|
|
{{alias}}()
|
|
Returns an accumulator function which incrementally computes a mid-range.
|
|
|
|
The mid-range is the arithmetic mean of maximum and minimum values.
|
|
Accordingly, the mid-range is the midpoint of the range and a measure of
|
|
central tendency.
|
|
|
|
If provided a value, the accumulator function returns an updated mid-range.
|
|
If not provided a value, the accumulator function returns the current mid-
|
|
range.
|
|
|
|
If provided `NaN`, the mid-range is `NaN` for all future invocations.
|
|
|
|
Returns
|
|
-------
|
|
acc: Function
|
|
Accumulator function.
|
|
|
|
Examples
|
|
--------
|
|
> var accumulator = {{alias}}();
|
|
> var v = accumulator()
|
|
null
|
|
> v = accumulator( 3.14 )
|
|
3.14
|
|
> v = accumulator( -5.0 )
|
|
~-0.93
|
|
> v = accumulator( 10.1 )
|
|
2.55
|
|
> v = accumulator()
|
|
2.55
|
|
|
|
See Also
|
|
--------
|
|
|