R help - May 2009 - ggplot2 adding vertical line at a certain date

library(ggplot2)

melt.updn <- (structure(list(date = structure(c(11808, 11869, 11961, 11992,
12084, 12173, 12265, 12418, 12600, 12631, 12753, 12996, 13057,
13149, 11808, 11869, 11961, 11992, 12084, 12173, 12265, 12418,
12600, 12631, 12753, 12996, 13057, 13149), class = "Date"), variable
structure(c(1L,
1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L, 2L, 2L, 2L,
2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L), .Label = c("unrestored",
"restored"), class = "factor"), value = c(1.1080259671261,
0.732188576856918,
0.410334408061265, 0.458980396410056, 0.429867902470711, 0.83126337241925,
0.602008712602784, 0.818751283264408, 1.12606382402475, 0.246174719479079,
0.941043753226865, 0.986511619794787, 0.291074883642735, 0.346361775752625,
1.36209038621623, 0.878561166753624, 0.525156715576168, 0.80305564765846,
1.08084449441812, 1.24906568558731, 0.970954515841768, 0.936838439269239,
1.26970090246036, 0.337831520417547, 0.909204325710795, 0.951009811036613,
0.290735620653709, 0.426683515714219)), .Names = c("date",
"variable",
"value"), row.names = c(NA, -28L), class = "data.frame"))

qplot(date, value, data=melt.updn, shape=variable)+geom_smooth()

#I would like to add a line at November 1, 2002
#thanks for the help

-- 
Stephen Sefick

Let's not spend our time and resources thinking about things that are
so little or so large that all they really do for us is puff us up and
make us feel like gods.  We are mammals, and have not exhausted the
annoying little problems of being mammals.

								-K. Mullis

check out geom_vline

  + geom_vline(xintercept=as.numeric(as.Date("2002-11-01")))

[you may not need to convert the date to numeric in the most recent  
ggplot2 version]

On 27 May 2009, at 20:31, stephen sefick wrote:
> library(ggplot2)
>
> melt.updn <- (structure(list(date = structure(c(11808, 11869, 11961,  
> 11992,
> 12084, 12173, 12265, 12418, 12600, 12631, 12753, 12996, 13057,
> 13149, 11808, 11869, 11961, 11992, 12084, 12173, 12265, 12418,
> 12600, 12631, 12753, 12996, 13057, 13149), class = "Date"),
variable > structure(c(1L,
> 1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L, 2L, 2L, 2L,
> 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L), .Label =
c("unrestored",
> "restored"), class = "factor"), value =
c(1.1080259671261,
> 0.732188576856918,
> 0.410334408061265, 0.458980396410056, 0.429867902470711,  
> 0.83126337241925,
> 0.602008712602784, 0.818751283264408, 1.12606382402475,  
> 0.246174719479079,
> 0.941043753226865, 0.986511619794787, 0.291074883642735,  
> 0.346361775752625,
> 1.36209038621623, 0.878561166753624, 0.525156715576168,  
> 0.80305564765846,
> 1.08084449441812, 1.24906568558731, 0.970954515841768,  
> 0.936838439269239,
> 1.26970090246036, 0.337831520417547, 0.909204325710795,  
> 0.951009811036613,
> 0.290735620653709, 0.426683515714219)), .Names = c("date",
"variable",
> "value"), row.names = c(NA, -28L), class =
"data.frame"))
>
> qplot(date, value, data=melt.updn, shape=variable)+geom_smooth()
>
> #I would like to add a line at November 1, 2002
> #thanks for the help
>
> -- 
> Stephen Sefick
>
> Let's not spend our time and resources thinking about things that are
> so little or so large that all they really do for us is puff us up and
> make us feel like gods.  We are mammals, and have not exhausted the
> annoying little problems of being mammals.
>
> 								-K. Mullis
>
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> https://stat.ethz.ch/mailman/listinfo/r-help
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http://www.R-project.org/posting-guide.html
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