[R] Odp: newbie needs help plotting time series

Petr PIKAL petr.pikal at precheza.cz
Mon Jun 30 11:48:43 CEST 2008


r-help-bounces at r-project.org napsal dne 30.06.2008 11:14:48:

> Dear R help list
> I have recently started using R to visualize time series of water level 
> measurements. The code I wrote 
> does exactly what I want:
> plot(x, a$B112, axes=FALSE, ylim=c(405,410), col="red", pch=15, 
> type="o", ylab="metres above sea level", main="Main Plot Title")
> axis(2, at=405:410, tck=1, col="gray60")
> axis.Date(1, at=seq(as.Date("2004-01-01"), as.Date("2008-06-01"), 
> by="month"), labels=seq(as.Date("2004-01-01"), as.Date("2008-06-01"), 
> by="month"), tck=1, col="gray60")
> Now I wanted to shift the data visualized by 6 months, so I replaced 
> "2004-01-01" by "2004-07-01" 
> and "2008-06-01" by "2008-12-01". Instead of the desired plot, I get an 
> message stating 
> (forgive the perhaps faulty translation into English, I'm working on a 
> version of R):
> mistake in axis(side, at = z, labels = labels, ...) : 
>   length of 'at' and 'labels' different, 50 != 54

Those two calls have different length

at=seq(as.Date("2004-01-01"), as.Date("2008-06-01"), by="month")
labels=seq(as.Date("2004-01-01"), as.Date("2008-06-01"), by="month")

you can try it by


could not there be some typo in your call?



> What have I done wrong? Thank you very much for your help!
> Katharina Dubach
> ______________________________________________
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> and provide commented, minimal, self-contained, reproducible code.

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