This was already answered here: https://stat.ethz.ch/pipermail/r-help/2009-January/184839.html
On Wed, Jan 14, 2009 at 8:26 AM, Neotropical bat risk assessments <neotropical.b...@gmail.com> wrote: > Hi all, > > For some reason the messages keep getting rejected. > trying again... > > > As I understand the zoo package will aggregate dates and times, but unclear > how to tackle this problem. > > I need to accomplish the following: > > 1. Generate a scatter plot of bat activity with dates on the X-axis and time > on the Y-axis. > include sunset and sunrise curves as an added part of graphic. > > In Excel I have a kludged way to do this, but it is not exactly what I need > and the times on the Y axis do not display correctly due to the 24:00 roll > over to next date and would prefer to understand how to do this using R so I > can repeat it with multiple data sets for multiple locations. > I removed the Graphic display as apparently the server refused the massage > with it. > I can email directly if anyone is able to assist or wished to see it. > > A sample of the data format is below. > Any suggestion welcome. > > Tnx. > > The bat activity data is in the format below with the species name, date and > time the species was active. > > Spec_code Date Time > Eptfus 6/4/03 22:44 > Eptfus 6/4/03 22:44 > Eptfus 6/9/03 21:59 > Eptfus 6/10/03 3:24 > Eptfus 6/13/03 0:22 > Eptfus 6/13/03 3:24 > Eptfus 6/17/03 0:03 > Eptfus 6/17/03 2:43 > Eptfus 6/17/03 21:59 > > > > The sunset-Sunrise data seen below is also straight forward: > Date Rise Set > 6/1/2003 4:12 19:50 > 6/2/2003 4:11 19:51 > 6/3/2003 4:10 19:52 > 6/4/2003 4:10 19:53 > 6/5/2003 4:09 19:54 > 6/6/2003 4:09 19:54 > 6/7/2003 4:09 19:55 > 6/8/2003 4:08 19:56 > 6/9/2003 4:08 19:57 > 6/10/2003 4:08 19:57 > 6/11/2003 4:07 19:58 > 6/12/2003 4:07 19:58 > 6/13/2003 4:07 19:59 > 6/14/2003 4:07 19:59 > 6/15/2003 4:07 20:00 > 6/16/2003 4:07 20:00 > 6/17/2003 4:07 20:01 > 6/18/2003 4:07 20:01 > > ______________________________________________ > R-help@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. > ______________________________________________ R-help@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.
