Re: [R] Vertical line in densityplot?

[Gustaf Rydevik]

On 12/1/06, Thomas Petzoldt [EMAIL PROTECTED] wrote:
 Hi,

 lattice graphics work by utilizing so called panel functions. Here is a
 working version of your example:

 library(lattice)
 x-rnorm(100)
 plot.new()
 densityplot(x,
   panel=function(x, ...){
 panel.densityplot(x, ...)
 panel.abline(v=0)
   }
 )


 For mor information, please look into the examples of densityplot and
 the help file of panel.abline


 Hope it helps

 Thomas


Thank you very much! Lattice works somewhat different from regular
graphics step-by-step addition then.

With standard axis, I just meant a set of axis where the x and y axis
are represented by lines going through origo, or (0,0). Right now some
sort of box is used instead.

Thanks again!

/Gustaf

-- 
email:[EMAIL PROTECTED]
tel: +46(0)703051451
address: Kantorsgatan 50:190 75424 Uppsala Sweden

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[R] Vertical line in densityplot?

[Gustaf Rydevik]

Hi all,

I'm trying to get a vertical line at a specific point in a
densityplot. abline seems to be what's required, but it doesn't align
itself to the scale used in the plot.

example:

library(lattice)
x-rnorm(100)
plot.new()
densityplot(x)
abline(v=0)
-
The line seems to use some other coordinate system. What kind of call
do I use to make abline use the graph's coordinates?

Additionally, it would be nice to have standard xy-axis, and to have
the line stop at the x-axis, so if anyone could tell me how to do
that, I'd be grateful.

Thanks in advance,

Gustaf


PS: a minor question: Why do I have to call plot.new() for abline to work?

-- 
email:[EMAIL PROTECTED]
tel: +46(0)703051451
address: Kantorsgatan 50:190 75424 Uppsala Sweden

__
R-help@stat.math.ethz.ch 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.

[R] Vertical line in densityplot?

[Ken Knoblauch]

I think that you are mixing lattice and base graphics.  This works  
for me:

library(lattice)
x-rnorm(100)
densityplot(x, panel =
function(x, ...) {
panel.densityplot(x, ...)
panel.abline(v = 0, ...)
   }
   )



Gustaf Rydevik a écrit

 Hi all,

 I'm trying to get a vertical line at a specific point in a
 densityplot. abline seems to be what's required, but it doesn't align
 itself to the scale used in the plot.

 example:

 library(lattice)
 x-rnorm(100)
 plot.new()
 densityplot(x)
 abline(v=0)
 -
 The line seems to use some other coordinate system. What kind of call
 do I use to make abline use the graph's coordinates?

[[alternative HTML version deleted]]

__
R-help@stat.math.ethz.ch 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.

Re: [R] Vertical line in densityplot?

[Thomas Petzoldt]

Hi,

lattice graphics work by utilizing so called panel functions. Here is a 
working version of your example:

library(lattice)
x-rnorm(100)
plot.new()
densityplot(x,
   panel=function(x, ...){
 panel.densityplot(x, ...)
 panel.abline(v=0)
   }
)


For mor information, please look into the examples of densityplot and 
the help file of panel.abline


Hope it helps

Thomas


Gustaf Rydevik wrote:
 Hi all,
 
 I'm trying to get a vertical line at a specific point in a
 densityplot. abline seems to be what's required, but it doesn't align
 itself to the scale used in the plot.
 
 example:
 
 library(lattice)
 x-rnorm(100)
 plot.new()
 densityplot(x)
 abline(v=0)
 -
 The line seems to use some other coordinate system. What kind of call
 do I use to make abline use the graph's coordinates?
 
 Additionally, it would be nice to have standard xy-axis, and to have
 the line stop at the x-axis, so if anyone could tell me how to do
 that, I'd be grateful.

What is a standard x achsis?.

 Thanks in advance,
 
 Gustaf
 
 
 PS: a minor question: Why do I have to call plot.new() for abline to work?


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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.