[R] Months in alphabetical order rather than chronological order in graph

Greg Snow Greg.Snow at imail.org
Fri Jan 28 23:29:26 CET 2011

This would be easier if you showed us a sample of your data and what commands you are using.  Without we need to guess.

Probably your month variable is being turned into a factor somewhere and the default for factors is alphabetical.  The best solution depends on how/where/when your months are being factorized.  You need to control the factorizing, maybe turning them into some type of date object instead of a factor, or create the factor, but specify the order that you want.

Gregory (Greg) L. Snow Ph.D.
Statistical Data Center
Intermountain Healthcare
greg.snow at imail.org

> -----Original Message-----
> From: r-help-bounces at r-project.org [mailto:r-help-bounces at r-
> project.org] On Behalf Of Kurt_Helf at nps.gov
> Sent: Friday, January 28, 2011 2:54 PM
> To: r-help at r-project.org
> Subject: [R] Months in alphabetical order rather than chronological
> order in graph
> Greetings
>      Though I have months in chronological order in my data table, the
> data
> were sampled every other month (i.e., February, April, June, August,
> October, December), every time I try to plot them (on the x-axis) they
> are
> plotted in alphabetical order.  What am I missing?
> Cheers
> Kurt
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> Kurt Lewis Helf, Ph.D.
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