A simplified ask is: when I use the time series plot function, R treats each time on 9/19/13 as an individual day, when clearly it isn't. Thank you ahead of time. Keith ts(chum) with(chum,plot.ts(Time,PA)) Chum<- Time PA 9/18/13 18:29 16 9/19/13 13:29 14 9/19/13 16:29 13.2 9/19/13 17:29 13.1 9/19/13 18:29 13 9/20/13 18:29 12 9/21/13 18:29 10 9/22/13 18:29 9 9/23/13 18:29 7 9/24/13 18:29 5 9/25/13 18:29 3 9/26/13 18:29 2 9/27/13 18:29 1 M. Keith Cox, Ph.D. Principal MKConsulting 17105 Glacier Hwy Juneau, AK 99801 U.S. 907.957.4606 [[alternative HTML version deleted]]
On Tue, 1 Apr 2014, Marlin Keith Cox wrote:> A simplified ask is: when I use the time series plot function, R treats > each time on 9/19/13 as an individual day, when clearly it isn't.The "ts" class can handle only regular time series. See the "zoo" or "xts" packages for dealing with time series that have an irregular time index. Here, you could use POSIXct or chron time stamps.> Thank you ahead of time. Keith > > ts(chum) > with(chum,plot.ts(Time,PA)) > > Chum<- > > Time PA 9/18/13 18:29 16 9/19/13 13:29 14 9/19/13 16:29 13.2 9/19/13 > 17:29 13.1 9/19/13 18:29 13 9/20/13 18:29 12 9/21/13 18:29 10 9/22/13 > 18:29 9 9/23/13 18:29 7 9/24/13 18:29 5 9/25/13 18:29 3 9/26/13 > 18:29 2 9/27/13 > 18:29 1 > > > M. Keith Cox, Ph.D. > Principal > MKConsulting > 17105 Glacier Hwy > Juneau, AK 99801 > U.S. 907.957.4606 > > [[alternative HTML version deleted]] > > ______________________________________________ > R-help at r-project.org mailing list > 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. >
Hello Keith, Your example is clearly not reproducible and wrong (Chum and chum). Please use dput() to attach sample dataset. At first glance, you work with hourly data. Package such as "xts" might be more useful. Regards, Pascal On Wed, Apr 2, 2014 at 3:16 PM, Marlin Keith Cox <marlinkcox at gmail.com> wrote:> A simplified ask is: when I use the time series plot function, R treats > each time on 9/19/13 as an individual day, when clearly it isn't. > > Thank you ahead of time. Keith > > ts(chum) > with(chum,plot.ts(Time,PA)) > > Chum<- > > Time PA 9/18/13 18:29 16 9/19/13 13:29 14 9/19/13 16:29 13.2 9/19/13 > 17:29 13.1 9/19/13 18:29 13 9/20/13 18:29 12 9/21/13 18:29 10 9/22/13 > 18:29 9 9/23/13 18:29 7 9/24/13 18:29 5 9/25/13 18:29 3 9/26/13 > 18:29 2 9/27/13 > 18:29 1 > > > M. Keith Cox, Ph.D. > Principal > MKConsulting > 17105 Glacier Hwy > Juneau, AK 99801 > U.S. 907.957.4606 > > [[alternative HTML version deleted]] > > ______________________________________________ > R-help at r-project.org mailing list > 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.-- Pascal Oettli Project Scientist JAMSTEC Yokohama, Japan