date_axis: gsplot date axis

In USGS-R/gsplot: Geological Survey Plotting

gsplot date axis

Description

Special axis for date handling, including interval labelling.

Usage

date_axis(object, ...)

date_axis.gsplot(object, ..., side, pos.lab = "tick", at = NULL,
  tick.int = NULL, snap.to = "day", warn = TRUE)

date_axis.default(side, pos.lab = "tick", tick.int = NULL, snap.to = NULL,
  ...)

Arguments

object	gsplot object
...	Further graphical parameters may also be supplied as arguments. See 'Details'.
side	side to place the axis on
pos.lab	where should the label be positioned, centered on the "tick" or "interval".
at	specific location to place ticks
tick.int	interval in which ticks should be placed, alternative to defining at.
snap.to	set the limits to coincide with temporal boundaries. Accepts "day", "week", "month", "quarter", "year", "wateryear", "decade".
warn	set to FALSE to turn off experimental warning

Details

Additional graphical parameter inputs:

• pos.lab where should the label be positioned, centered on the "tick" or "interval".

• tick.int interval in which ticks should be placed, alternative to defining at.

• snap.to set the limits to coincide with temporal boundaries. Accepts "day", "week", "month", "quarter", "year", "wateryear", "decade".

Examples

x <- seq(as.Date("2013-01-22"), as.Date("2013-10-02"), "days")
y <- rnorm(length(x), 71, 19)
gs <- gsplot() %>%
   points(x, y) %>%
   date_axis(side=1, pos.lab="interval", tick.int="month", snap.to="year")
gs

x <- seq(as.POSIXct("1992-03-03 06:00:00"), as.POSIXct("1992-03-08 12:00:00"), "hour")
y <- rnorm(length(x), 19, 2)
gs <- gsplot() %>%
   points(x, y) %>%
   date_axis(side=1, pos.lab="tick", tick.int="day", snap.to="day", format="%D")
gs

USGS-R/gsplot documentation built on April 17, 2023, 8:45 p.m.