Question

我需要将单个HBox中的相同节点分别旋转到45、90、135度。

到目前为止，我有以下内容，但它只返回旋转了135度的完整HBox。

# use ggplot
library(ggplot2)
# assume everything happens in GMT timezone
Sys.setenv( TZ = "GMT" )

# replicating the data: a measurement result sampled at 1 sec interval
t <- seq(start, end, by = "1 sec")
Time24 <- trimws(strftime(t, format = "%k:%M:%OS", tz="GMT"))
Date <- strftime(t, format = "%d/%m/%Y", tz="GMT")
head(Time24)
head(Date)
d <- data.frame(Date, Time24)
# this is just a random data of temperature
d$temp <- rnorm(length(d$Date),mean=25,sd=5)
head(d)
# the resulting data is as follows
#        Date  Time24     temp
#1 22/05/2019 0:00:00 22.67185
#2 22/05/2019 0:00:01 19.91123
#3 22/05/2019 0:00:02 19.57393
#4 22/05/2019 0:00:03 15.37280
#5 22/05/2019 0:00:04 31.76683
#6 22/05/2019 0:00:05 26.75153

# this is the answer to the question
# which is combining the the date and the time column of the data
# note we still assume that this happens in GMT
t <- as.POSIXct(paste(d$Date,d$Time24,sep=" "), format = "%d/%m/%Y %H:%M:%OS", tz="GMT")

# print the data into a plot
png(filename = "test.png", width = 800, height = 600, units = "px", pointsize = 22 )
ggplot(d,aes(x=t,y=temp)) + geom_line() +
  scale_x_datetime(date_breaks = "3 hour",
                   date_labels = "%H:%M\n%d-%b")

旋转HBox中的每个ImageView

0 个答案: