Extract contrast coefficients from a null claim

Decomposes the hypothesis into a named numeric vector of coefficients, one per param_obj term, plus the hypothesized scalar value and operator.

Usage

claim_contrast_coefs(claim, filter = NULL)

Arguments

claim

A null_claim object.

filter

Optional. The name of a conditioning slot (e.g. "given") that every param_obj term must supply. If a term's class declares that slot as an optional constructor argument (default NULL) but the slot is unset on the node, an error is raised. If NULL (the default), the slot to enforce is auto-detected per term by inspecting its class constructor's optional formals (those defaulting to NULL) and requiring the first such slot found.

Value

A list with fields coefs, scalar, and op.