Thank you. Let me redefine the situation. Each time an event starts, I record the date and time. Each day there are 4 new events. Time is the only variable. I would like to graphically show how the time for events 1, 2, 3, and 4 for the current day compare to the times for events 1, 2, 3, and 4 for the previous day. How would I plot / display those times differences? Greg Coats
library (ggplot2) myDat <- read.table(text = "datetime 2021-03-12 05:16:46 2021-03-12 09:17:02 2021-03-12 13:31:43 2021-03-12 22:00:32 2021-03-13 09:21:43 2021-03-13 13:51:12 2021-03-13 18:03:13 2021-03-13 22:20:28 2021-03-14 08:59:03 2021-03-14 13:15:56 2021-03-14 17:25:23 2021-03-14 21:36:26", sep = ",", header = TRUE) head(myDat) myDat$datetime <- as.POSIXct(myDat$datetime, tz = "", format ="%Y-%M-%d %H:%M:%OS") > On Mar 16, 2021, at 3:34 PM, John Fox <j...@mcmaster.ca> wrote: > > Dear Greg, > > Coordinate plots typically have a horizontal (x) and vertical (y) axis. The > command > > ggplot(myDat, aes(x=datetime, y = datetime)) + geom_point() > > works, but I doubt that it produces what you want. > > You have only one variable in your data set -- datetime -- so it's not > obvious what you want to do. If you can't clearly describe the structure of > the plot you intend to draw, it's doubtful that I or anyone else can help you. > > Best, > John > > John Fox, Professor Emeritus > McMaster University > Hamilton, Ontario, Canada > web: https://socialsciences.mcmaster.ca/jfox/ > <https://socialsciences.mcmaster.ca/jfox/> [[alternative HTML version deleted]] ______________________________________________ R-help@r-project.org mailing list -- To UNSUBSCRIBE and more, see https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.
