当数据为POSIXct时,ggplotly()不显示geom_vline / geom_hline

时间:2018-10-10 07:38:46

标签: r ggplot2 plotly posixct geom-vline

我正在尝试制作带有“时间标记”的图表。这些时间标记是某些日期的垂直线。时间数据是POSIXct格式。我想使用Plotly令人敬畏的交互式界面,并在其中使用ggplot对象。

问题在于,使用ggplotly()之后,这些“时间标记”没有显示出来。我已经尝试过使用plotly::add_segments(),但是它不起作用。 这是两个可复制的示例:

1。使用非POSIXct数据,效果很好

# dummy dataset
df2 = data.frame(id = 1:10, measure = runif(10, 0, 20))
events2 = data.frame(number = c(2,3,8))
# ggplot graph
p2 = ggplot() + geom_line(data = df2, aes(x = id, y = measure))  +
  geom_vline(data = events2, aes(xintercept = events2$number), color = "red")
p2
# plotly graph that displays the geom_vline properly
ggplotly(p2)

2。对于POSIXct,数据无法显示正确的结果

# dummy dataset
df = data.frame(date = seq(as.POSIXct("2017-07-01", tz = "UTC", format = "%Y-%m-%d"),
                           as.POSIXct("2018-04-15", tz = "UTC", format = "%Y-%m-%d"),
                           "1 month"),
                measure = runif(10, 0, 20))
events = data.frame(date_envents = as.POSIXct(c("2017-10-12", "2017-11-12", "2018-03-15"), tz = "UTC", format = "%Y-%m-%d"))
# ggplot graph
p = ggplot() + geom_line(data = df, aes(x = date, y = measure))  +
  geom_vline(data = events, aes(xintercept = events$date), color = "red")
p
# plotly graph that does not display the geom_vline properly
ggplotly(p)

我已经看到一些解决方法(例如:Add vertical line to ggplotly plot),但是它很“复杂”。有没有更简单的方法来解决这个问题?

我正在使用Windows 3. R版本3.5.0,RStudio和以下软件包: library(tidyverse)library(plotly)

1 个答案:

答案 0 :(得分:2)

一个简单的解决方法是将xintecept中的geom_vline设置为数字。

样本数据

df = data.frame(date = seq(as.POSIXct("2017-07-01", tz = "UTC", format = "%Y-%m-%d"),
                           as.POSIXct("2018-04-15", tz = "UTC", format = "%Y-%m-%d"),
                           "1 month"),
                measure = runif(10, 0, 20))
events = data.frame(date_envents = as.POSIXct(c("2017-10-12", "2017-11-12", "2018-03-15"), tz = "UTC", format = "%Y-%m-%d"))

代码

p = ggplot() + geom_line(data = df, aes(x = date, y = measure))  +
  geom_vline(data = events, aes(xintercept = as.numeric(events$date)), color = "red")

结果

ggplotly(p)

enter image description here