version
, which is the most recent
version before the function (or other object) was
deprecated.gg_dep(version, msg)
gg_dep
will give an error, warning, or message,
depending on the difference between the current ggplot2
version and the specified version
. If the current major number is greater than
version
's major number, or if the current minor
number is more than 1 greater than version
's minor
number, give an error.
If the current minor number differs from version
's
minor number by one, give a warning.
If the current subminor number differs from
version
's subminor number, print a message.