Valueswithin
Valueswithin is a general concept used in data processing and programming to describe selecting elements from a collection that lie within a specified range. It functions as a filter or predicate that keeps elements x for which a <= x <= b, where a and b are the lower and upper bounds.
Formal definition: For a dataset V, valueswithin(V, a, b) returns the set { x in V | a <=
Boundaries may be inclusive or exclusive. An inclusive version uses a <= x <= b; an exclusive version
Implementation examples: In SQL, one can use WHERE value BETWEEN a AND b (inclusive). In Python: [x
Applications and considerations: Used in data cleaning, feature engineering, windowing of time series, and threshold-based analyses.
See also: between operator, range query, thresholding, data filtering.