Update the values in a gpar object

gp_update(
  gpar_obj,
  col,
  fill,
  alpha,
  lty,
  lwd,
  lex,
  lineend,
  linejoin,
  linemitre,
  fontsize,
  cex,
  fontfamily,
  fontface,
  lineheight
)

Arguments

gpar_obj: gpar object
col: Colour for lines and borders.
fill: Colour for filling rectangles, polygons, ...
alpha: Alpha channel for transparency
lty: Line type
lwd: Line width
lex: Multiplier applied to line width
lineend: Line end style ('round', 'butt', 'square')
linejoin: Line join style ('round', 'mitre', 'bevel')
linemitre: Line mitre limit (number greater than 1)
fontsize: The size of text (in points)
cex: Multiplier applied to fontsize
fontfamily: The font family
fontface: The font face ('bold', 'italic', ...)
lineheight: The height of a line as a multiple of the size of text