[R] time series plot: x-axis problem

[Rui Barradas]

Hello,


Em 26-04-2013 14:30, arun escreveu:
>
>
> Hi,
>
> labs <- format(as.Date(time(rr)), "%b-%Y")
> #Error in as.Date.default(time(rr)) :
>   # do not know how to convert 'time(rr)' to class “Date”
>
> #I guess this needs library(zoo)

You're right, I forgot because it was already loaded prior to running 
the code. Apologies to the OP.

Rui Barradas


>
> library(zoo)
>   labs <- format(as.Date(time(rr)), "%b-%Y")
>
> sessionInfo()
> R version 3.0.0 (2013-04-03)
> Platform: x86_64-unknown-linux-gnu (64-bit)
>
> #or
> z<- zoo(rr)
>   lab1<-as.yearmon(index(z))
>   plot(rr, xlab="2012 - 2013", ylab="event freq", xaxt = "n", col="blue")
>   axis(1, time(rr), lab1,    cex.axis = .9, tcl = -.5, las = 2)
> A.K.
>
>
>
> ----- Original Message -----
> From: Rui Barradas <ruipbarradas at sapo.pt>
> To: Jerry <i89rt5 at gmail.com>
> Cc: r-help at r-project.org
> Sent: Friday, April 26, 2013 5:25 AM
> Subject: Re: [R] time series plot: x-axis problem
>
> Hello,
>
> Try the following.
>
> (rr=ts(rr,start=c(2012,5),frequency=12))
>
> plot(rr, xlab="2012 - 2013", ylab="event freq", xaxt = "n", col="blue")
>
> labs <- format(as.Date(time(rr)), "%b-%Y")
>
> axis(1, time(rr), labs,    cex.axis = .9, tcl = -.5, las = 2)
>
>
> Hope this helps,
>
> Rui Barradas
>
> Em 25-04-2013 19:11, Jerry escreveu:
>> Hi,
>>
>> I'm trying to plot a simple time series. I'm running into an issue with
>> x-axis
>>
>> The codes below will produce a plot with correct x-axis showing from Jan to
>> Dec
>>
>>> rr=c(3,2,4,5,4,5,3,3,6,2,4,2)
>>
>>> (rr=ts(rr,start=c(2012,1),frequency=12))
>>
>>> win.graph(width=6.5, height=2.5,pointsize=8)
>>
>>> plot(rr, xlab="2012", ylab="event freq", xaxt = "n", col="blue")
>>
>>> axis(1, time(rr), rep(substr(month.abb, 1, 3), length = length(rr)),
>> cex.axis = .9, tcl = -.5, las = 2)
>>
>>
>> However, if I change the start point from Jan 2012 to May 2012, which is
>>
>>> (rr=ts(rr,start=c(2012,5),frequency=12))
>>
>>
>> Then run the codes below
>>
>>> plot(rr, xlab="2012 - 2013", ylab="event freq", xaxt = "n", col="blue")
>>
>>> axis(1, time(rr), rep(substr(month.abb, 1, 3), length = length(rr)),
>> cex.axis = .9, tcl = -.5, las = 2)
>>
>>
>> In the the new plot produced, x-axis is still showing from Jan to Dec, not
>> from May to April as I desired.
>>
>> How to fix x-axis? Is it possible to fix it WITHOUT modifying the object
>> "rr"? Also, ideally, I would like to have each time point on x-axis showing
>> month/year, not just month. How to do that?
>>
>> Any help and input will be much appreciated!
>>
>> Thanks
>> Jerry
>>
>>      [[alternative HTML version deleted]]
>>
>> ______________________________________________
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>> 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 at 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.
>