Extract a scalar hypothesis value from a null claim

Rearranges a hypothesis of the form c * PARAM + d == scalar by moving all numeric terms to the right-hand side. Unlike claim_contrast_coefs(), this does not require or validate a linear combination — it is suitable for single-parameter claims involving any param_obj subclass (e.g. MU(), PI(), RHO()).

Usage

claim_scalar(claim, solve_coef = FALSE)

Arguments

claim

A null_claim object.

solve_coef

Logical. If TRUE, divides the scalar by the parameter's coefficient c, fully solving for the parameter value (scalar - d) / c. Errors if c == 0. If FALSE, returns scalar - d only, leaving c on the parameter side. Default FALSE.

Value

A list with fields:

coefs

Named numeric vector of length 1: the coefficient c on the parameter term.

scalar

Numeric. The resolved scalar value after rearrangement.

op

Character. The (possibly flipped) relational operator.

See also

claim_contrast_coefs()