barwidth
A numeric or a grid::unit()
object specifying
the width of the colourbar. Default value is legend.key.width
or
legend.key.size
in theme()
or theme.
barheight
A numeric or a grid::unit()
object specifying
the height of the colourbar. Default value is legend.key.height
or
legend.key.size
in theme()
or theme.
frame.colour
A string specifying the colour of the frame
drawn around the bar. If NULL
(the default), no frame is drawn.
frame.linewidth
A numeric specifying the width of the frame
drawn around the bar.
frame.linetype
A numeric specifying the linetype of the frame
drawn around the bar.
ticks.colour
A string specifying the colour of the tick marks.
ticks.linewidth
A numeric specifying the width of the tick marks.
draw.ulim
A logical specifying if the upper limit tick marks should
be visible.
draw.llim
A logical specifying if the lower limit tick marks should
be visible.
direction
A character string indicating the direction of the guide.
One of "horizontal" or "vertical."
default.unit
A character string indicating grid::unit()
for barwidth
and barheight
.
reverse
logical. If TRUE
the colourbar is reversed. By default,
the highest value is on the top and the lowest value is on the bottom
title
A character string or expression indicating a title of guide.
If NULL
, the title is not shown. By default
(waiver()
), the name of the scale object or the name
specified in labs()
is used for the title.
title.position
A character string indicating the position of a
title. One of "top" (default for a vertical guide), "bottom", "left"
(default for a horizontal guide), or "right."
title.theme
A theme object for rendering the title text. Usually the
object of element_text()
is expected. By default, the theme is
specified by legend.title
in theme()
or theme.
title.hjust
A number specifying horizontal justification of the
title text.
title.vjust
A number specifying vertical justification of the title
text.
label
logical. If TRUE
then the labels are drawn. If
FALSE
then the labels are invisible.
label.position
A character string indicating the position of a
label. One of "top", "bottom" (default for horizontal guide), "left", or
"right" (default for vertical guide).
label.theme
A theme object for rendering the label text. Usually the
object of element_text()
is expected. By default, the theme is
specified by legend.text
in theme()
.
label.hjust
A numeric specifying horizontal justification of the
label text.
label.vjust
A numeric specifying vertical justification of the label
text.
order
positive integer less than 99 that specifies the order of
this guide among multiple guides. This controls the order in which
multiple guides are displayed, not the contents of the guide itself.
If 0 (default), the order is determined by a secret algorithm.