Re: [R] datetime on x-axis of plot

From: Don MacQueen <macq_at_llnl.gov>
Date: Thu, 28 Feb 2008 15:36:43 -0800

Is the date part of your data a POSIXct object?

If so,

   plot( myData[,1], myData[,2] )

will label the x axis with dates.

See the help pages for date-time class objects:

   ?POSIXt

(POSIXt includes both POSIXct and POSIXlt; I tend to prefer POSIXct and find it the easier of the two to work with, overall)

-Don

At 1:04 PM -0800 2/28/08, joshv wrote:
>Hello, I'm reading Time Series Analysis and its Applilcations with R Examples
>and I have a question...
>
>I notice that in the book there are timeseries plots but without the x-axis
>being labeled with dates. They are just numbers 1,...50,...100, etc. How
>do I get the date to show up on the x-axis?
>
>Here is my dateframe:
>
>> head(myData, 5)
>
>1 2008-01-30 08:30 7.00
>2 2008-01-30 08:32 9.25
>3 2008-01-30 08:34 5.50
>4 2008-01-30 08:36 5.00
>5 2008-01-30 08:38 -26.25
>
>(Also, I have searched using Rseek.org and not found anything to help me.
>Any searching advice would be greatly appreciated.)
>
>--
>View this message in context:
>http://www.nabble.com/datetime-on-x-axis-of-plot-tp15745910p15745910.html
>Sent from the R help mailing list archive at Nabble.com.
>
>______________________________________________
>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.

-- 
--------------------------------------
Don MacQueen
Environmental Protection Department
Lawrence Livermore National Laboratory
Livermore, CA, USA
925-423-1062

______________________________________________
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.
Received on Thu 28 Feb 2008 - 23:41:28 GMT

Archive maintained by Robert King, hosted by the discipline of statistics at the University of Newcastle, Australia.
Archive generated by hypermail 2.2.0, at Fri 29 Feb 2008 - 00:30:18 GMT.

Mailing list information is available at https://stat.ethz.ch/mailman/listinfo/r-help. Please read the posting guide before posting to the list.

list of date sections of archive