R help - Mar 2013 - Create patterns within a plot?

Dear All,

As an attempt to highlight the overall pattern in a Forest plot, I would like to
"highlight" the area around HR=1. I cannot find any simple tools for
painting a grey ribbon between 0.9 and 1.1. Any suggestions?

Thank you in advance!

Cheers, Patrik

	[[alternative HTML version deleted]]

Please note that I want to use log-scale on the x-axis which makes the polygon
function sad.

Cheers, Patrik 


-----Ursprungligt meddelande-----
Fr?n: r-help-bounces at r-project.org [mailto:r-help-bounces at r-project.org]
F?r ?hagen Patrik
Skickat: den 14 mars 2013 08:47
Till: R hELP
?mne: [R] Create patterns within a plot?



Dear All,

As an attempt to highlight the overall pattern in a Forest plot, I would like to
"highlight" the area around HR=1. I cannot find any simple tools for
painting a grey ribbon between 0.9 and 1.1. Any suggestions?

Thank you in advance!

Cheers, Patrik

	[[alternative HTML version deleted]]

______________________________________________
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PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
and provide commented, minimal, self-contained, reproducible code.

On 03/14/2013 09:19 PM, ?hagen Patrik wrote:
>
> Please note that I want to use log-scale on the x-axis which makes the
polygon function sad.
>
> Cheers, Patrik
>
>
> -----Ursprungligt meddelande-----
> Fr?n: r-help-bounces at r-project.org [mailto:r-help-bounces at
r-project.org] F?r ?hagen Patrik
> Skickat: den 14 mars 2013 08:47
> Till: R hELP
> ?mne: [R] Create patterns within a plot?
>
>
>
> Dear All,
>
> As an attempt to highlight the overall pattern in a Forest plot, I would
like to "highlight" the area around HR=1. I cannot find any simple
tools for painting a grey ribbon between 0.9 and 1.1. Any suggestions?
>
Hi Patrik,
This is a bit indirect, but it may do what you want. The example plot is 
from the metafor package (see forest.default):

forest(dat$yi, dat$vi)
library(plotrix)
gradient.rect(0.9,-0.1,1.1,14,
  reds=c(1,0.5,1),greens=c(1,0.5,1),
  blues=c(1,0.5,1),gradient="x",border=NA)
par(new=TRUE)
forest(dat$yi, dat$vi)

Jim

Same idea, but just using base graphics and using an x-axis with log units:

library(metafor)

data(dat.bcg)

res <- rma(measure="OR", ai=tpos, bi=tneg, ci=cpos, di=cneg,
data=dat.bcg, slab=paste(dat.bcg$author, dat.bcg$year, sep=", "))

forest(res, cex=.9, at=log(c(.05, .25, 1, 4)), xlim=c(-10,7), atransf=exp)
rect(log(0.5), 0.1, log(1.5), 13.9, col="gray90", border=NA)
par(new=TRUE)
forest(res, cex=.9, at=log(c(.05, .25, 1, 4)), xlim=c(-10,7), atransf=exp)

Best,
Wolfgang
> -----Original Message-----
> From: r-help-bounces at r-project.org [mailto:r-help-bounces at
r-project.org]
> On Behalf Of Jim Lemon
> Sent: Thursday, March 14, 2013 12:19
> To: ?hagen Patrik
> Cc: R hELP
> Subject: Re: [R] Create patterns within a plot?
> 
> On 03/14/2013 09:19 PM, ?hagen Patrik wrote:
> >
> > Please note that I want to use log-scale on the x-axis which makes the
> polygon function sad.
> >
> > Cheers, Patrik
> >
> >
> > -----Ursprungligt meddelande-----
> > Fr?n: r-help-bounces at r-project.org [mailto:r-help-bounces at
r-project.org]
> F?r ?hagen Patrik
> > Skickat: den 14 mars 2013 08:47
> > Till: R hELP
> > ?mne: [R] Create patterns within a plot?
> >
> >
> >
> > Dear All,
> >
> > As an attempt to highlight the overall pattern in a Forest plot, I
would
> like to "highlight" the area around HR=1. I cannot find any
simple tools
> for painting a grey ribbon between 0.9 and 1.1. Any suggestions?
> >
> Hi Patrik,
> This is a bit indirect, but it may do what you want. The example plot is
> from the metafor package (see forest.default):
> 
> forest(dat$yi, dat$vi)
> library(plotrix)
> gradient.rect(0.9,-0.1,1.1,14,
>   reds=c(1,0.5,1),greens=c(1,0.5,1),
>   blues=c(1,0.5,1),gradient="x",border=NA)
> par(new=TRUE)
> forest(dat$yi, dat$vi)
> 
> Jim
> 
> ______________________________________________
> R-help at r-project.org mailing list
> https://stat.ethz.ch/mailman/listinfo/r-help
> PLEASE do read the posting guide http://www.R-project.org/posting-
> guide.html
> and provide commented, minimal, self-contained, reproducible code.