grid.pattern_none() draws nothing onto the graphic device.
A numeric vector or unit object specifying x-locations of the pattern boundary.
A numeric vector or unit object specifying y-locations of the pattern boundary.
A numeric vector used to separate locations in x, y into multiple boundaries.
All locations within the same id belong to the same boundary.
Currently ignored
A string indicating the default units to use if x or y
are only given as numeric vectors.
A character identifier.
An object of class "gpar", typically the output
from a call to the function gpar. This is basically
a list of graphical parameter settings.
A logical value indicating whether graphics output should be produced.
A Grid viewport object (or NULL).
A grid grob object invisibly. If draw is TRUE then also draws to the graphic device as a side effect.