[R] Dates plotting backwards

[William Dunlap]

> -----Original Message-----
> From: r-help-bounces at r-project.org 
> [mailto:r-help-bounces at r-project.org] On Behalf Of Sam Albers
> Sent: Tuesday, November 10, 2009 3:08 PM
> To: r-help at r-project.org
> Subject: [R] Dates plotting backwards
> 
> Hello,
> 
> I am having a little trouble formatting my dates correctly. 
> When I plot
> something using the following commands, R plots the most 
> recent date on the
> left of the figure and then earlier date on the right of the 
> figure. Given
> that English is read from left to right I would like to have 
> the dates on my
> figure arranged in the same way.  I am sure that this is 
> something fairly
> simple but I was wondering if someone could help me out. Here 
> is a minimal
> example that should reproduce my problem. I've also included so data
> thinking that perhaps my data format was the problem.
> 
> Thanks in advance!
> 
> Sam
> 
> Date=as.Date(test$Date, format= "%d/%m/%Y")

Change that to
   test$Data <- as.Date(...)
or plot Date instead of test$Date.

Bill Dunlap
Spotfire, TIBCO Software
wdunlap tibco.com 

> plot(test$D.2D50.SA ~ test$Date)
> 
> "Date","D.2D50.SA"
> 28/08/2009,60.67
> 28/08/2009,66.4
> 28/08/2009,50.19
> 28/08/2009,38.19
> 28/08/2009,50.19
> 12/09/2009,62.2
> 12/09/2009,93.77
> 12/09/2009,49.89
> 12/09/2009,106.34
> 12/09/2009,42.22
> 22/09/2009,24.15
> 22/09/2009,105.17
> 22/09/2009,15.04
> 22/09/2009,23.54
> 22/09/2009,19.6
> 05/10/2009,74.41
> 05/10/2009,34.78
> 05/10/2009,28.74
> 05/10/2009,41.29
> 05/10/2009,42.68
> 12/10/2009,46.26
> 12/10/2009,13.31
> 12/10/2009,29.95
> 12/10/2009,34.28
> 12/10/2009,74.51
> 19/10/2009,33.67
> 19/10/2009,69.86
> 19/10/2009,61.3
> 19/10/2009,21.38
> 19/10/2009,80.37
> 26/10/2009,20.69
> 26/10/2009,63.37
> 26/10/2009,70.91
> 26/10/2009,22.7
> 26/10/2009,23.89
> 
> -- 
> *****************************************************
> Sam Albers
> Geography Program
> University of Northern British Columbia
> 3333 University Way
> Prince George, British Columbia
> Canada, V2N 4Z9
> phone: 250 960-6777
> *****************************************************
> 
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