without knowing much about your data or the base plotting... I'd use the library ggplot2.
First, you'll need to format your dates to POSIXct AggData$time <- as.POSIXct(AggData$time,format='%H:%M') Then plotting is trivial. ggplot(AggData,aes(x=time,y=value))+geom_points() or +geom_line() if you'd rather. Hope that helps, Justin On Tue, Nov 29, 2011 at 10:07 AM, threshold <r.kozar...@gmail.com> wrote: > > Dear R useres, got the following problem. Given the AggData (listed below) > I need to plot AggData[,2] vs time (AggData[,1]) for chosen 'rows'. Ive > done > already: > > plot(AggData[rows,2], xaxt='n') > axis(1,at=seq(1,length(rows),1),sub("","", AggData[rows,1])) > > which works, but I need to list only chosen data points, say full hours or > every 60th point, something like: > > axis(1,at=seq(1,seq(1,length(rows),60)),sub("", "", > AggData[day.rows[seq(1,length(rows),60)],2])) > > but does not work. Could be nice if time on the x-axis is in H:m format (no > seconds). > > In the original data time bout is 1 minute, e.g. 17:19:35, 17:20:35, > 17:21:35 . Taken every 100th for brevity yields > > > (AggData[seq(1,length(rows),100),c(2,7)]) > > time value > 1 17:19:35 80.68327 > 101 18:59:35 80.97230 > 201 20:39:35 78.30810 > 301 22:19:35 80.41558 > 401 23:59:35 77.01051 > 501 01:39:35 77.19687 > 601 03:19:35 78.20762 > 701 04:59:35 77.13315 > 801 06:39:35 76.29110 > 901 08:19:35 75.32090 > 1001 09:59:35 85.32890 > 1101 11:39:35 79.86978 > 1201 13:19:35 83.32418 > 1301 14:59:35 78.26018 > 1401 16:39:35 79.06434 > > > Thanks in advance. > Best, robert > > > > > -- > View this message in context: > http://r.789695.n4.nabble.com/hour-in-x-axis-tp4120142p4120142.html > Sent from the R help mailing list archive at Nabble.com. > > ______________________________________________ > 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. > [[alternative HTML version deleted]] ______________________________________________ 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.