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., |
hjust |
A numeric horizontal justification |
vjust |
A numeric vertical justification |
Details
These functions may be useful within a validDetails method when writing a new grob class.
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.
Author(s)
Paul Murrell
Copyright (©) 1999–2012 R Foundation for Statistical Computing.
Licensed under the GNU General Public License.