Description Usage Arguments Examples
These are the default scales for the units class. These will
usually be added automatically. To override manually, use
scale_*_unit
.
1 2 3 4 5 6 7 8 9 | scale_x_unit(name = waiver(), breaks = waiver(), unit = NULL,
minor_breaks = waiver(), labels = waiver(), limits = NULL,
expand = waiver(), oob = censor, na.value = NA_real_,
trans = "identity", position = "bottom", sec.axis = waiver())
scale_y_unit(name = waiver(), breaks = waiver(), unit = NULL,
minor_breaks = waiver(), labels = waiver(), limits = NULL,
expand = waiver(), oob = censor, na.value = NA_real_,
trans = "identity", position = "left", sec.axis = waiver())
|
name |
The name of the scale. Used as axis or legend title. If
|
breaks |
One of:
|
unit |
A unit specification to use for the axis. If given, the values will be converted to this unit before plotting. An error will be thrown if the specified unit is incompatible with the unit of the data. |
minor_breaks |
One of:
|
labels |
One of:
|
limits |
A numeric vector of length two providing limits of the scale.
Use |
expand |
Vector of range expansion constants used to add some
padding around the data, to ensure that they are placed some distance
away from the axes. Use the convenience function |
oob |
Function that handles limits outside of the scale limits (out of bounds). The default replaces out of bounds values with NA. |
na.value |
Missing values will be replaced with this value. |
trans |
Either the name of a transformation object, or the object itself. Built-in transformations include "asn", "atanh", "boxcox", "exp", "identity", "log", "log10", "log1p", "log2", "logit", "probability", "probit", "reciprocal", "reverse" and "sqrt". A transformation object bundles together a transform, it's inverse,
and methods for generating breaks and labels. Transformation objects
are defined in the scales package, and are called |
position |
The position of the axis. "left" or "right" for vertical scales, "top" or "bottom" for horizontal scales |
sec.axis |
specify a secondary axis |
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 | library(units)
gallon <- make_unit('gallon')
mtcars$consumption <- mtcars$mpg * with(ud_units, mi/gallon)
mtcars$power <- mtcars$hp * with(ud_units, hp)
# Use units encoded into the data
ggplot(mtcars) +
geom_point(aes(power, consumption))
# Convert units on the fly during plotting
ggplot(mtcars) +
geom_point(aes(power, consumption)) +
scale_x_unit(unit = 'W') +
scale_y_unit(unit = 'km/l')
# Resolve units when transforming data
ggplot(mtcars) +
geom_point(aes(power, 1/consumption))
|
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