trellis.par.get(name) trellis.par.set(name, value)
name
.
It must have exactly the same component names as the existing list.
trellis.settings
of the currently active device.
add.line
add.text
axis.line
bar.fill
big.tick
box.3d
box.dot
box.rectangle
box.umbrella
breaks
cloud.3d
dot.line
dot.symbol
fill
hloc.line
hloc.candle
main.label
major.grid
medium.tick
minor.grid
outer.label
pie.fill
plot.line
plot.symbol
reference.line
regions
small.tick
stackbar
strip.background
strip.shingle
superpose.line
superpose.symbol
style.type
wires
trellis.par.get
,
a list giving the current value of the named parameter.
If a graphics device is not currently running,
a call to
trellis.par.get
will start the default device
via a call to
dev.start()
.
A call to
trellis.par.set
will update the
trellis.settings
attribute on the
.Device
object in frame 0.
This pair of functions is often used to get current Trellis settings
and then modify those values for use in subsequent plots.
The Trellis parameters set by trellis.par.set are only in effect
for the current graphics device.
If you want to make a permanent change to the Trellis parameters you
should modify the
trellis.settings
object that is used
by the particular device - see the
trellis.settings
help file.
# Get the plot.line Trellis setting: pl <- trellis.par.get("plot.line") # Change the plot.line col value to color 3 and set the # trellis.settings to use it: pl$col <- 3 trellis.par.set("plot.line", pl) # # Get the strip.background Trellis setting: sb <- trellis.par.get("strip.background") # Change the first strip.background to color 9 and set the # trellis.settings to use it: sb$col[1] <- 9 trellis.par.set("strip.background", sb) # Look at all the Trellis settings for the current device: trellis.par.get()