Goog morning! How to construct a time serie in hours or in minuts, ... The examples are all in years Excuse for questions so basic! Jver pir2.jv at wanadoo.fr
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6 messages · pir2.jv, Achim Zeileis, Brian Ripley +1 more
On Tue, 28 Jun 2005 09:20:54 +0200 pir2.jv wrote:
Goog morning! How to construct a time serie in hours or in minuts, ... The examples are all in years Excuse for questions so basic!
Look at the zoo package for time series with arbitrary time scale (e.g., "Date", "chron", "POSIXct", ...). The zoo vignette also explains the relation to other irregular time series classes available in package its, fCalendar and tseries. Z
Jver pir2.jv at wanadoo.fr
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On Tue, 28 Jun 2005 10:53:11 +0100 (BST) Prof Brian Ripley wrote:
On Tue, 28 Jun 2005, Achim Zeileis wrote:
On Tue, 28 Jun 2005 09:20:54 +0200 pir2.jv wrote:
Goog morning! How to construct a time serie in hours or in minuts, ... The examples are all in years Excuse for questions so basic!
Look at the zoo package for time series with arbitrary time scale (e.g.,"Date", "chron", "POSIXct", ...). The zoo vignette also explains the relation to other irregular time series classes available in package its, fCalendar and tseries.
However, this might be a regular time series. For an example, see example(beav1, package="MASS"). This a series measured every 10 mins.
...which you could handle by creating a regular zoo series (of class "zooreg"). Z
-- 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
On Tue, 28 Jun 2005, Achim Zeileis wrote:
On Tue, 28 Jun 2005 09:20:54 +0200 pir2.jv wrote:
Goog morning! How to construct a time serie in hours or in minuts, ... The examples are all in years Excuse for questions so basic!
Look at the zoo package for time series with arbitrary time scale (e.g., "Date", "chron", "POSIXct", ...). The zoo vignette also explains the relation to other irregular time series classes available in package its, fCalendar and tseries.
However, this might be a regular time series. For an example, see example(beav1, package="MASS"). This a series measured every 10 mins.
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
On Tue, 28 Jun 2005, Achim Zeileis wrote:
On Tue, 28 Jun 2005 10:53:11 +0100 (BST) Prof Brian Ripley wrote:
On Tue, 28 Jun 2005, Achim Zeileis wrote:
On Tue, 28 Jun 2005 09:20:54 +0200 pir2.jv wrote:
Goog morning! How to construct a time serie in hours or in minuts, ... The examples are all in years Excuse for questions so basic!
Look at the zoo package for time series with arbitrary time scale (e.g.,"Date", "chron", "POSIXct", ...). The zoo vignette also explains the relation to other irregular time series classes available in package its, fCalendar and tseries.
However, this might be a regular time series. For an example, see example(beav1, package="MASS"). This a series measured every 10 mins.
...which you could handle by creating a regular zoo series (of class "zooreg").
Yes, but the standard ts analysis functions are for objects of class "ts", and those suffice for regular time series. Some work for class zooreg and some do not. (More would if zooreg had a tsp() method.)
Z
-- 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
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
R News (www.r-project.org -> "Documentation: Newsletter", (4/1) June 2004, pp. 29-32, and (2/2) June 2002, pp. 2-10 contain excellent articles on date-time classes and time series capabilities in R. In addition, I have found ch. 14 in Venables and Ripley (2002) Modern Applied Statistics in S, 4th ed. (Springer) and the vignette for the zoo package to be excellent. Greater flexibility in modeling and analysis are provided with the Rmetrics project (www.rmetrics.org or http://www.itp.phys.ethz.ch/econophysics/R/), but that also requires greater effort to learn. spencer graves
Prof Brian Ripley wrote:
On Tue, 28 Jun 2005, Achim Zeileis wrote:
On Tue, 28 Jun 2005 10:53:11 +0100 (BST) Prof Brian Ripley wrote:
On Tue, 28 Jun 2005, Achim Zeileis wrote:
On Tue, 28 Jun 2005 09:20:54 +0200 pir2.jv wrote:
Goog morning! How to construct a time serie in hours or in minuts, ... The examples are all in years Excuse for questions so basic!
Look at the zoo package for time series with arbitrary time scale (e.g.,"Date", "chron", "POSIXct", ...). The zoo vignette also explains the relation to other irregular time series classes available in package its, fCalendar and tseries.
However, this might be a regular time series. For an example, see example(beav1, package="MASS"). This a series measured every 10 mins.
...which you could handle by creating a regular zoo series (of class "zooreg").
Yes, but the standard ts analysis functions are for objects of class "ts", and those suffice for regular time series. Some work for class zooreg and some do not. (More would if zooreg had a tsp() method.)
Z
-- 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
Spencer Graves, PhD Senior Development Engineer PDF Solutions, Inc. 333 West San Carlos Street Suite 700 San Jose, CA 95110, USA spencer.graves at pdf.com www.pdf.com <http://www.pdf.com> Tel: 408-938-4420 Fax: 408-280-7915