On Jul 30, 2011, at 6:05 PM, Eduardo M. A. M.Mendes wrote:
Hi Joshua
Many thanks.
library(Hmisc);
plot.xts(x,major.ticks="weeks",major.format="%b/%d %H:%M:%S");
minor.tick(nx=7);
The above commands give me almost what I need. I just need to
figure out
how to split the labels in two lines (without using ggplot2)
Use '\n' in your format string.
--
David
Cheers
Ed
-----Original Message-----
From: Joshua Ulrich [mailto:josh.m.ulr...@gmail.com]
Sent: Saturday, July 30, 2011 1:09 PM
To: Eduardo M. A. M.Mendes
Cc: r-help@r-project.org
Subject: Re: [R] Plot.xts - how to change the x-axis labels to show
weekly
labels.
Hi Eduardo,
I'm not too familiar with plot.xts, but this answers 2/3 of your
requests.
R> plot(x, major.ticks="weeks", major.format="%b %d")
plot.zoo is quite a bit more flexible and has a lot of examples in
?plot.zoo. Combining plot.zoo with endpoints should be able to give
you
what you want.
Best,
--
Joshua Ulrich | FOSS Trading: www.fosstrading.com
On Sat, Jul 30, 2011 at 9:10 AM, Eduardo M. A. M.Mendes
<emammen...@gmail.com> wrote:
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
[[alternative HTML version deleted]]
______________________________________________
R-help@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.
______________________________________________
R-help@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.
David Winsemius, MD
West Hartford, CT
______________________________________________
R-help@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.
