nsca_direction_map: Complete mapping between directions, corners and component...

In NSCA: Necessary and Sufficient Condition Analysis

Complete mapping between directions, corners and component statements

Description

Reproduces Table 1 of the condition analysis in degree framework, which sets out the main directional types of the X-Y relationship together with the expected empty space and boundary each implies for necessity and for sufficiency, and adds the corner numbering the frontier engines use.

Usage

nsca_direction_map()

Details

The direction is a claim about the theorised relationship, not about the shape of the estimated frontier, which may be a step function or a straight line under any of the four types. Theory may instead posit a curvilinear or U-shaped relationship, for which the expected empty space is no longer a single corner; those are outside the scope of this package.

Value

A data frame describing all four necessary-and-sufficient directions. The biconditional column keeps its name: it is the joint statement written out, and the short logical word is the more usable column name.

See Also

nsca_corners(), nsca_terms()

Examples

nsca_direction_map()

NSCA documentation built on Oct. 10, 2026, 5:08 p.m.