ggplot2 Scales For date_xx Objects

The scale_*_date_** functions provide nice defaults for plotting the appropriate date_xx subclass, but come with a limited number of configuration options. If you require more finetuning, you can convert date_xx vectors with as.Date() and use ggplot2::scale_x_date().

scale_x_date_yq(
  name = "Quarter",
  breaks = date_yq_breaks(),
  labels = ggplot2::waiver(),
  limits = NULL,
  position = "bottom"
)

scale_y_date_yq(
  name = "Quarter",
  breaks = date_yq_breaks(),
  labels = ggplot2::waiver(),
  limits = NULL,
  position = "left"
)

scale_x_date_ym(
  name = "Month",
  breaks = date_ym_breaks(),
  labels = ggplot2::waiver(),
  limits = NULL,
  position = "bottom"
)

scale_y_date_ym(
  name = "Month",
  breaks = date_ym_breaks(),
  labels = ggplot2::waiver(),
  limits = NULL,
  position = "left"
)

scale_x_date_yw(
  name = "Week",
  breaks = date_yw_breaks(),
  labels = ggplot2::waiver(),
  limits = NULL,
  position = "bottom"
)

scale_y_date_yw(
  name = "Week",
  breaks = date_yw_breaks(),
  labels = ggplot2::waiver(),
  limits = NULL,
  position = "left"
)

Arguments

name	The name of the scale. Used as the axis or legend title. If waiver(), the default, the name of the scale is taken from the first mapping used for that aesthetic. If NULL, the legend title will be omitted.
breaks	One of: NULL for no breaks ggplot2::waiver() for automatic breaks (see date_xx_breaks()) A date_xx vector of breaks A function that takes the limits as input and returns breaks as output
labels	One of: NULL for no labels ggplot2::waiver() for the default labels computed by the transformation object A character vector giving labels (must be same length as breaks, so it's a good idea to specify manual breaks if you use manual labels) A function that takes the breaks as input and returns labels as output
limits	One of: NULL to use the default scale range A numeric vector of length two providing limits of the scale. Use NA to refer to the existing minimum or maximum A function that accepts the existing (automatic) limits and returns new limits Note that setting limits on positional scales will remove data outside of the limits. If the purpose is to zoom, use the limit argument in the coordinate system (see coord_cartesian()).
position	For position scales, The position of the axis. left or right for y axes, top or bottom for x axes.

Examples

if (require("ggplot2", quietly = TRUE)){

dd <- data.frame(date = seq(date_yq(2016, 1), date_yq(2018, 1)), V1 = 1:9)
p <- ggplot(dd, aes(x = date, y = V1)) +
  geom_point()

p  # automatically uses the proper scale
p + scale_x_date_yq("quarters with default spacing")
p + scale_x_date_yq(breaks = date_yq_breaks(3))


# Different ways to specify breaks and labels
p <- ggplot(
  data.frame(date = seq(date_yq(2012, 4), date_yq(2018, 4)), V1 = 1:25),
  aes(x = date, y = V1)
) +
  geom_point()

p + scale_x_date_yq(labels = waiver()) + ggtitle("auto Labels")
p + scale_x_date_yq(labels = NULL) + ggtitle("no Labels")
p + scale_x_date_yq(labels = LETTERS[1:4]) + ggtitle("manual Labels")
p + scale_x_date_yq(labels = format_yq_iso) + ggtitle("function Labels")

p + scale_x_date_yq(breaks = waiver()) + ggtitle("auto breaks")
p + scale_x_date_yq(breaks = NULL) + ggtitle("no breaks")
p + scale_x_date_yq(breaks = date_yq(2013, 2:3) ) + ggtitle("manual breaks")
p + scale_x_date_yq(breaks = date_yq_breaks(1) ) + ggtitle("function breaks")
}