[R] plot date

[Prof Brian Ripley]

On Wed, 10 Mar 2004, li xian wrote:

> I was trying to plot date time  vs numeric values.
> Number of My date value are about 4000,  It is continuous time series, 3 days, the interveal is 5 minutes, (2002-09-22 12:35:00 pm to 2002-09-22 3:40:00 pm) How can i plot it in R? 
> I tried the regular way:
>  
> formattime <- strptime(time, format= "%d-%b-%y %I:%M %p")
> plot(formattime, outNum)

>  However the x axes doen't give me the hours by each three days, instead
> it is "mon" "tue" etc. What should I do?

Read ?axis.POSIXct and its examples.  The plot method has to guess how you 
want the axis labelled, but by taking charge you can have your way.

-- 
Brian D. Ripley,                  ripley at stats.ox.ac.uk
Professor of Applied Statistics,  http://www.stats.ox.ac.uk/~ripley/
University of Oxford,             Tel:  +44 1865 272861 (self)
1 South Parks Road,                     +44 1865 272866 (PA)
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