grid (version 3.1.0)

valid.just: Validate a Justification

Description

Utility functions for determining whether a justification specification is valid and for resolving a single justification value from a combination of character and numeric values.

Usage

valid.just(just)
resolveHJust(just, hjust) 
resolveVJust(just, vjust)

Arguments

just

A justification either as a character value, e.g., "left", or as a numeric value, e.g., 0.

hjust

A numeric horizontal justification

vjust

A numeric vertical justification

Value

A numeric representation of the justification (e.g., "left" becomes 0, "right" becomes 1, etc, ...). An error is given if the justification is not valid.

Details

These functions may be useful within a validDetails method when writing a new grob class.