Position scale, date

Usage

scale_x_datetime(..., expand = waiver(), breaks = pretty_breaks(), minor_breaks = waiver())

scale_y_datetime(..., expand = waiver(), breaks = pretty_breaks(), minor_breaks = waiver())

Arguments

breaks
A vector of breaks, a function that given the scale limits returns a vector of breaks, or a character vector, specifying the width between breaks. For more information about the first two, see continuous_scale, for more information about the last, see date_breaks`.
minor_breaks
Either NULL for no minor breaks, waiver() for the default breaks (one minor break between each major break), a numeric vector of positions, or a function that given the limits returns a vector of minor breaks.
...
common continuous scale parameters: name, breaks, labels, na.value, limits and trans. See continuous_scale for more details
expand
a numeric vector of length two giving multiplicative and additive expansion constants. These constants ensure that the data is placed some distance away from the axes.

Description

Position scale, date

Examples

start <- ISOdate(2001, 1, 1, tz = "") df <- data.frame( day30 = start + round(runif(100, max = 30 * 86400)), day7 = start + round(runif(100, max = 7 * 86400)), day = start + round(runif(100, max = 86400)), hour10 = start + round(runif(100, max = 10 * 3600)), hour5 = start + round(runif(100, max = 5 * 3600)), hour = start + round(runif(100, max = 3600)), min10 = start + round(runif(100, max = 10 * 60)), min5 = start + round(runif(100, max = 5 * 60)), min = start + round(runif(100, max = 60)), sec10 = start + round(runif(100, max = 10)), y = runif(100) ) # Automatic scale selection qplot(sec10, y, data = df)

qplot(min, y, data = df)

qplot(min5, y, data = df)

qplot(min10, y, data = df)

qplot(hour, y, data = df)

qplot(hour5, y, data = df)

qplot(hour10, y, data = df)

qplot(day, y, data = df)

qplot(day30, y, data = df)

# Manual scale selection qplot(day30, y, data = df)

library(scales) # to access breaks/formatting functions last_plot() + scale_x_datetime(breaks = date_breaks("2 weeks"))

last_plot() + scale_x_datetime(breaks = date_breaks("10 days"))
Scale for 'x' is already present. Adding another scale for 'x', which will replace the existing scale.

library(scales) # to access breaks/formatting functions last_plot() + scale_x_datetime(breaks = date_breaks("10 days"), labels = date_format("%d/%m"))
Scale for 'x' is already present. Adding another scale for 'x', which will replace the existing scale.

last_plot() + scale_x_datetime(breaks = date_breaks("1 day"), minor_breaks = date_breaks("2 hour"))
Scale for 'x' is already present. Adding another scale for 'x', which will replace the existing scale.