[R] ggplot2: line plot with gaps in time axis

ONKELINX, Thierry Thierry.ONKELINX at inbo.be
Thu Sep 4 09:22:54 CEST 2008


The easiest way is to create the entire timeseries and then set the
missing values to NA. The NA values will lead to the gaps you want.



ir. Thierry Onkelinx
Instituut voor natuur- en bosonderzoek / Research Institute for Nature
and Forest
Cel biometrie, methodologie en kwaliteitszorg / Section biometrics,
methodology and quality assurance
Gaverstraat 4
9500 Geraardsbergen
tel. + 32 54/436 185
Thierry.Onkelinx op inbo.be 

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-----Oorspronkelijk bericht-----
Van: r-help-bounces op r-project.org [mailto:r-help-bounces op r-project.org]
Namens btcruiser
Verzonden: woensdag 3 september 2008 20:33
Aan: r-help op r-project.org
Onderwerp: [R] ggplot2: line plot with gaps in time axis

Hello, I'm trying to plot data that has gaps in the timeline because my
only has the business day in it. When I do a line plot I get the data
then a blank area where a line goes the tail of the last data point  to
head of the next data point. Is there a way I can do a line plot where
gaps are not plotted?

Thanks in advance, 


> names(utildf)
[1] "Date_and_Time" "Utilization"   "Direction"    
> utildf
           Date_and_Time Utilization Direction
1    2008-08-25 05:00:00    5.862601   Inbound
2    2008-08-25 05:05:00   10.025328   Inbound
3    2008-08-25 05:10:00    5.794900   Inbound
4    2008-08-25 05:15:00    9.862726   Inbound
5    2008-08-25 05:20:00    4.150328   Inbound
6    2008-08-25 05:25:00    5.559362   Inbound

# startDateTime and stopDateTime is user entered
Start <- as.numeric(as.POSIXct(startDateTime))
End <- as.numeric(as.POSIXct(stopDateTime))
as.POSIXct(End,origin="1970-1-1"), by="DSTday"))
as.POSIXct(End,origin="1970-1-1"), by="DSTday"))
dt <-
dt + scale_x_continuous(breaks=Period,label=Labels)

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