Dear R-users

 

I am new to R and struggling not to bother the list with silly questions.

 

I read the documentation on xts and searched for some examples over the
internet on how to use plot.xts.  

 

The xts object is as follows

 

dataxts : An 'xts' object from 2010-06-27 to 2010-08-05 containing:

  Data: num [1:56161, 1:14] 74 74.2 74.2 74.1 73.9 ...

  Indexed by objects of class: [POSIXct,POSIXt] TZ: 

  xts Attributes:  

 NULL

 

The time index goes from 2010-06-27 to 2010-08-05 hourly, that is, there are
56151 time stamps.  If I issue plot.xts(dataxts[,1]) a graphics window comes
out with the following x labels:

 

Jun 27 00:00, Jul 11 21:00, Jul 25 21:00, Aug 05  00:00

 

I could not figure out how to change the number of ticks so that the time
stamps (major ticks) are shown weekly and the minor ticks daily.  Besides, I
wonder whether the labels could be show as follows:

 

Jun 27       Jul 11   Jul 25  Aug 05 (just as example)

00:00         21:00   21:00  00:00

 

Thanks for your help and patience.

 

Cheers

 

Ed

 


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