R help - Dec 2008 - How to Break Axis in Lattice Plot

Dear All,

I have searched the following problem in the R help achives, and there did 
not seem to be solutio for it.

The problem is how to break the axis in the xyplot (lattice plot).  I read 
the posts using the package plotrix, buy it doesn't work with the xyplot, 
which is lattice based.

A simple example is attached below:

xyplot(c(1:10,100)~c(1:10,100))

What I would like to do is break the axis from 10 to 100 so that the scale 
from 1:10 still intact, but I can show the data at 100 as well.  It has to 
be based on xyplot as I have conditions in my data.


Thanks,
Larry

On Tue, Dec 9, 2008 at 8:04 PM, Larry Ma <larry_ma at verizon.net>
wrote:
> Dear All,
>
> I have searched the following problem in the R help achives, and there did
> not seem to be solutio for it.
>
> The problem is how to break the axis in the xyplot (lattice plot).  I read
> the posts using the package plotrix, buy it doesn't work with the
xyplot,
> which is lattice based.
>
> A simple example is attached below:
>
> xyplot(c(1:10,100)~c(1:10,100))
>
> What I would like to do is break the axis from 10 to 100 so that the scale
> from 1:10 still intact, but I can show the data at 100 as well.  It has to
> be based on xyplot as I have conditions in my data.
You can use shingles: see (compare to Figure 10.15)

http://lmdvr.r-forge.r-project.org/figures/figures.html?chapter=10;figure=10_16;theme=stdBW;code=right

-Deepayan

Thank you very much for the suggestion.  I did check into your sample codes:
it creates an factor for the xyplot to condition on.  However, this causes a
problem as I have already other factor(s) to conditon on.

I figured out a hard way but using the grid.text inserting "//" at the
physical location to give readers a percetion of breaking the axis.  In
addtion, one has to recode the values so that extreme values are closer to
the value before "//" and finally relabel the extreme values as well.

I wish there is a better way to break the axis in the lattice plot.
> ----- Original Message ----- 
> From: "Deepayan Sarkar" <deepayan.sarkar at gmail.com>
> To: "Larry Ma" <larry_ma at verizon.net>
> Cc: <r-help at r-project.org>
> Sent: Wednesday, December 10, 2008 3:44 PM
> Subject: Re: [R] How to Break Axis in Lattice Plot
>
>> You can use shingles: see (compare to Figure 10.15)
>>
>>
http://lmdvr.r-forge.r-project.org/figures/figures.html?chapter=10;figure=10_16;theme=stdBW;code=right
>>
>> -Deepayan
>>
>
>> On Tue, Dec 9, 2008 at 8:04 PM, Larry Ma <larry_ma at
verizon.net> wrote:
>>> Dear All,
>>>
>>> I have searched the following problem in the R help achives, and
there
>>> did
>>> not seem to be solutio for it.
>>>
>>> The problem is how to break the axis in the xyplot (lattice plot). 
I
>>> read
>>> the posts using the package plotrix, buy it doesn't work with
the
>>> xyplot,
>>> which is lattice based.
>>>
>>> A simple example is attached below:
>>>
>>> xyplot(c(1:10,100)~c(1:10,100))
>>>
>>> What I would like to do is break the axis from 10 to 100 so that
the
>>> scale
>>> from 1:10 still intact, but I can show the data at 100 as well.  It
has
>>> to
>>> be based on xyplot as I have conditions in my data.
>>
>