Message-ID: <530F7551.8000204@stats.ox.ac.uk>
Date: 2014-02-27T17:26:41Z
From: Brian Ripley
Subject: Controlling plot axis for dates
In-Reply-To: <530F7142.9090205@imap.iu.edu>
On 27/02/2014 17:09, David Parkhurst wrote:
> I?d like to control the number of tick marks on the ?x? axis of a plot,
> when the variable there is dates. I thought to use the xaxp parameter,
> but the documentation for par says ?It [i.e., xaxp] is only relevant to
> default numeric axis systems, and not for example to dates.? My
> question, then, is how to control the number of ticks on an axis that
> represents dates?
See ?Axis and ?axis.Date .
> PLEASE do read the posting guide
> http://www.R-project.org/posting-guide.html
> and provide commented, minimal, self-contained, reproducible code.
Please do. It is not clear which plot method it was that produced
dates, although it is a fair guess that it called Axis().
--
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)
Oxford OX1 3TG, UK Fax: +44 1865 272595