Well, a brute force and stupidity approach with geom_text will work but it's
not aesthetically very nice. Note I did not play around with text size.
Try :
ggplot(mdat, aes(position, value)) + geom_point(aes(colour = Treatment)) +
geom_rug(subset = .(position < 14),aes(y=NULL),color="orange") +
geom_rug(subset = .(position > 14),aes(y=NULL),color="black") +
geom_text(data=NULL, x =11 , y= 0.75, colour= "orange", label =
"London") +
geom_text(data=NULL, x =16 , y= 0.75, colour= "blue", label =
"NYC")
I thought that one should be able to generate a second legend with an
aes(colour=ids) but it does not work.
Someone much more knowledgeable than me hopefully will have a better idea.
John Kane
Kingston ON Canada
-----Original Message-----
From: tim_smith_...@yahoo.com
Sent: Thu, 7 Jun 2012 07:30:08 -0700 (PDT)
To: jrkrid...@inbox.com, bsmith030...@gmail.com, r-help@r-project.org
Subject: Re: [R] ggplot2: legend for geom_rug() ..?
Hi,
Here is the corrected code:
library(ggplot2)
ids <- paste('id_',1:3,sep='')
before <- sample(9)
after <- sample(1:10,9)
dat <- as.matrix(cbind(before,after))
rownames(dat) <- rep(ids,3)
position <- c(rep(10,3),rep(13,3),rep(19,3))
mdat <- cbind(melt(dat),position)
colnames(mdat) <- c('ID','Treatment','value','position')
ggplot(mdat, aes(position, value)) + geom_point(aes(colour = Treatment)) +
geom_rug(subset = .(position < 14),aes(y=NULL),color="orange") +
geom_rug(subset = .(position > 14),aes(y=NULL),color="black")
Alternatively, how do I add a second legend in ggplot2?
thanks!
_________________________________________________________________
From: John Kane <jrkrid...@inbox.com>
To: Brian Smith <bsmith030...@gmail.com>; r-help@r-project.org
Sent: Wednesday, June 6, 2012 3:06 PM
Subject: Re: [R] ggplot2: legend for geom_rug() ..?
What is X2?
code not running at the moment
John Kane
Kingston ON Canada
> -----Original Message-----
> From: [1]bsmith030...@gmail.com
> Sent: Wed, 6 Jun 2012 11:52:25 -0400
> To: [2]r-help@r-project.org
> Subject: [R] ggplot2: legend for geom_rug() ..?
>
> Hi,
>
> I was trying to make another legend for the rug plot. Sample code:
>
>
> library(ggplo2)
> ids <- paste('id_',1:3,sep='')
> before <- sample(9)
> after <- sample(1:10,9)
> dat <- as.matrix(cbind(before,after))
> rownames(dat) <- rep(ids,3)
> position <- c(rep(10,3),rep(13,3),rep(19,3))
>
> mdat <- cbind(melt(dat),position)
>
> ggplot(mdat, aes(position, value)) + geom_point(aes(colour = X2)) +
> geom_rug(subset = .(position < 14),aes(y=NULL),color="orange") +
> geom_rug(subset = .(position > 14),aes(y=NULL),color="black")
>
>
>
>
> This gives the plot correctly, but how can I add another legend that
> would
> give some more information on the rugplot (e.g. that 'orange' line =
> 'London', and 'black' line = 'NYC')?
>
> thanks!!
>
> [[alternative HTML version deleted]]
>
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References
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and provide commented, minimal, self-contained, reproducible code.
