R help - Oct 2009 - Transparent Bands in R

Hello All,

My question is regarding the attached plot. I would like to have multiple
transparent green bands running the length (yaxis) of the plot the width of
which is determined by the green lines at y=0 in the plot. Can you suggest a
way to do it? 
For those who can't or are unwilling to download the file the plot is at
http://www.twitpic.com/ma8w0

Thanks!
http://www.nabble.com/file/p25983169/foo.ps foo.ps 
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Hi,

Maybe use polygon() ?

Good luck,
Megha.

2009/10/20 mnstn <pavan.namd at gmail.com>:
>
> Hello All,
>
> My question is regarding the attached plot. I would like to have multiple
> transparent green bands running the length (yaxis) of the plot the width of
> which is determined by the green lines at y=0 in the plot. Can you suggest
a
> way to do it?
> For those who can't or are unwilling to download the file the plot is
at
> http://www.twitpic.com/ma8w0
>
> Thanks!
> http://www.nabble.com/file/p25983169/foo.ps foo.ps
> --
> View this message in context:
http://www.nabble.com/Transparent-Bands-in-R-tp25983169p25983169.html
> Sent from the R help mailing list archive at Nabble.com.
>
> ______________________________________________
> 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.
>

On 10/21/2009 09:40 AM, mnstn wrote:
> Hello All,
>> My question is regarding the attached plot. I would like to have
multiple
>> transparent green bands running the length (yaxis) of the plot the
width of
>> which is determined by the green lines at y=0 in the plot. Can you
suggest a
>> way to do it?
>>      
Hi mnstn,
Transparency is only supported by some graphic devices. It may be 
simpler to plot the values, use "rect" to draw green rectangles:

xylim<-par("usr")
rect(start1,xylim[3],stop2,xylim[4],col="green")
rect(start2,...

then redraw the lines over the rectangles using "lines".

Jim

Hello Megha and Jim,
Thanks for your comments. The green bands actually correspond to data that
looks like:
13 0
42 0
183 0
186 0
187 0
192 0
194 0
and so on. I plotted them using:
plot(v[,1],3+v[,2],type="h",col="gray",lwd=5) and the rest
of the data using
points. The result is here:
http://www.twitpic.com/md2li
Thanks!


Jim Lemon-2 wrote:
> 
> On 10/21/2009 09:40 AM, mnstn wrote:
>> Hello All,
>>> My question is regarding the attached plot. I would like to have
>>> multiple
>>> transparent green bands running the length (yaxis) of the plot the
width
>>> of
>>> which is determined by the green lines at y=0 in the plot. Can you
>>> suggest a
>>> way to do it?
>>>      
> Hi mnstn,
> Transparency is only supported by some graphic devices. It may be 
> simpler to plot the values, use "rect" to draw green rectangles:
> 
> xylim<-par("usr")
> rect(start1,xylim[3],stop2,xylim[4],col="green")
> rect(start2,...
> 
> then redraw the lines over the rectangles using "lines".
> 
> 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.
> 
> 
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