I have data from several sensors that recorded data at hourly intervals during seven months. I want to separate daily variation from the trend, and also be able to zoom in on only one month of data. I have not been able what functions to use, I can not figure out from the help for 'ts' how to use hourly data. I guess this is routine-work for a lot of people so I hope someone can point me in the right direction. --------------------------------------------- Henrik Andersson Netherlands Institute of Ecology - Centre for Estuarine and Marine Ecology P.O. Box 140 4400 AC Yerseke Phone: +31 113 577473 h.andersson at nioo.knaw.nl http://www.nioo.knaw.nl/ppages/handersson
Seven month time-series sampled at hourly intervals
3 messages · Henrik Andersson, Achim Zeileis, Gabor Grothendieck
On Fri, 02 Dec 2005 12:35:46 +0100 Henrik Andersson wrote:
I have data from several sensors that recorded data at hourly intervals during seven months. I want to separate daily variation from the trend, and also be able to zoom in on only one month of data. I have not been able what functions to use, I can not figure out from the help for 'ts' how to use hourly data.
You could use a "ts" series with frequency 24, corresponding to hours within a day. Alternatively, you can use the "zoo" or "zooreg" class from package zoo along with POSIXct time stamps (or some other user-defined format). See the vignette of the zoo package for more details. Z
I guess this is routine-work for a lot of people so I hope someone can point me in the right direction. --------------------------------------------- Henrik Andersson Netherlands Institute of Ecology - Centre for Estuarine and Marine Ecology P.O. Box 140 4400 AC Yerseke Phone: +31 113 577473 h.andersson at nioo.knaw.nl http://www.nioo.knaw.nl/ppages/handersson
______________________________________________ R-help at stat.math.ethz.ch mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html
In addition to prior suggestion look at: http://cran.r-project.org/doc/contrib/Ricci-refcard-ts.pdf http://zoonek2.free.fr/UNIX/48_R/15.html http://cran.r-project.org/src/contrib/Views/
On 12/2/05, Henrik Andersson <h.andersson at nioo.knaw.nl> wrote:
I have data from several sensors that recorded data at hourly intervals during seven months. I want to separate daily variation from the trend, and also be able to zoom in on only one month of data. I have not been able what functions to use, I can not figure out from the help for 'ts' how to use hourly data. I guess this is routine-work for a lot of people so I hope someone can point me in the right direction. --------------------------------------------- Henrik Andersson Netherlands Institute of Ecology - Centre for Estuarine and Marine Ecology P.O. Box 140 4400 AC Yerseke Phone: +31 113 577473 h.andersson at nioo.knaw.nl http://www.nioo.knaw.nl/ppages/handersson
______________________________________________ R-help at stat.math.ethz.ch mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html