I found a problem with the minimum limits of scale_x_date and scale_x_datetime. According to the documentation, NA could be use.
A numeric vector of length two providing limits of the scale. Use NA to refer to the existing minimum or maximum.
But a POSXIct seems to be required.
I expected that NA could be use, without aving to use as.POSIXct(NA). The upper limit (second element of limit) seems OK.
library(ggplot2)
library(lubridate)
# Example adapted from ?scale_x_date()
last_month <- Sys.Date() - 0:29
set.seed(1)
df <- data.frame(
date = last_month,
datetime = last_month-hours(0:29), # testing with datetime
price = runif(30)
)
base_datetime <- ggplot(df, aes(datetime, price)) +
geom_line()
# NA as maximum works
base_datetime + scale_x_date(limits = c(Sys.Date() - 7, NA))
#NA as minimum don't works:
base_datetime + scale_x_datetime(limits = c(NA, Sys.Date() - 7) )
#> Error in `transform$transform()`:
#> ! `transform_time()` works with objects of class <POSIXct> only
# Work-around: as.POSIXct(NA)
base_datetime + scale_x_datetime(limits = c(as.POSIXct(NA), Sys.Date() - 7) )
#> Warning: Removed 7 rows containing missing values or values outside the scale range
#> (`geom_line()`).
# Same behaviour with date (instead of datetime)
base <- ggplot(df, aes(date, price)) +
geom_line()
base + scale_x_date(limits = c( NA,Sys.Date() - 7 ))
#> Error in `transform$transform()`:
#> ! `transform_date()` works with objects of class <Date> only
Created on 2026-06-19 with reprex v2.1.1
I'm a new GitHub contributor, feedback is welcome.
I found a problem with the minimum
limitsofscale_x_dateandscale_x_datetime. According to the documentation,NAcould be use.I expected that
NAcould be use, without aving to useas.POSIXct(NA). The upper limit (second element oflimit) seems OK.Created on 2026-06-19 with reprex v2.1.1
I'm a new GitHub contributor, feedback is welcome.