scale_x_datetime {ggplot2} | R Documentation |
Position scale, date
scale_x_datetime(..., expand = waiver(), breaks = pretty_breaks(), minor_breaks = waiver()) scale_y_datetime(..., expand = waiver(), breaks = pretty_breaks(), minor_breaks = waiver())
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
|
minor_breaks |
Either |
... |
common continuous scale parameters:
|
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. |
Other position scales: scale_x_continuous
,
scale_x_date
,
scale_x_discrete
,
scale_x_log10
,
scale_x_reverse
,
scale_x_sqrt
,
scale_y_continuous
,
scale_y_date
,
scale_y_discrete
,
scale_y_log10
,
scale_y_reverse
, scale_y_sqrt
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")) library(scales) # to access breaks/formatting functions last_plot() + scale_x_datetime(breaks = date_breaks("10 days"), labels = date_format("%d/%m")) last_plot() + scale_x_datetime(breaks = date_breaks("1 day"), minor_breaks = date_breaks("2 hour"))