[R] Strange labels on plot with dates
Henrik Andersson
han at dmi.dk
Tue Apr 3 15:24:49 CEST 2007
Hello fellow R people,
I don't understand the default behavior of the axis labeling when
plotting dates.
I would expect something like 2001, 2002 or possibly Jan 01, Jan
02...Jan 06, but instead I only see Jan 01, Jan 01, Jan 01....
See the following example
startdate <- strptime("2001-01-01",format="%Y-%m-%d")
enddate <- strptime("2006-12-31",format="%Y-%m-%d")
dates <- seq(startdate,enddate,by="month")
daynr <- as.numeric(julian(dates,origin=dates[1]))
yvar <- sin(daynr*2*pi/365)
plot(yvar~dates,type='l')
Cheers, Henrik
--
Henrik Andersson
Danish Meteorological Institute
Lyngbyvej 100
2100 Copenhagen Ø
Denmark
Tel: +45 39157215
Email: han at dmi.dk
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