R help - Nov 2004 - New trellis settings

I've just upgraded to 2.0.1 and was taken by surprise by the changes
in graphical parameter handling for lattice plots.  I'd previously
been using 1.9.1.  The old settings seem to have been replaced by a
daunting number of new options.  I've poked around a bit and have not
seen any discussion of the changes in the newsletter or on r-help but
maybe I'm overlooking something?

Specifically, I have some code that in the past changed the relative
proportions of text versus the plot area using:

  trellis.par.set('fontsize', list(text=8))

which caused all text to get smaller, and the plot area to grow to
fill the larger available space.  Now, the plot area does not grow on
its own.  I've tried fiddling with layout.heights, layout.widths, and
axis.components but there are dozens of settings available.  For many
of these settings, I have no idea what quantity I'm actually changing,
other than by trial and error.  Is there an easier way?

-- Dave

Hi, Dear all R users:

Does someone know whether R can calculate the Receiver Operating 
Characteristic (ROC) Curves? I didn't find it from the packages.

Thanks a lot.

--- Xin

On Monday 29 November 2004 22:39, dhinds at sonic.net
wrote:
> I've just upgraded to 2.0.1 and was taken by surprise by the changes
> in graphical parameter handling for lattice plots.  I'd previously
> been using 1.9.1.  The old settings seem to have been replaced by a
> daunting number of new options.  
Not really. The old settings are essentially what they were, the new 
'options' are for things that used to be hard-coded in previous 
versions.
> I've poked around a bit and have not 
> seen any discussion of the changes in the newsletter or on r-help but
> maybe I'm overlooking something?
> 
> Specifically, I have some code that in the past changed the relative
> proportions of text versus the plot area using:
>
>   trellis.par.set('fontsize', list(text=8))
>
> which caused all text to get smaller, and the plot area to grow to
> fill the larger available space.  Now, the plot area does not grow on
> its own.  
That does seem to have been a side-effect in 1.9.1, but it was never 
intended. I would consider that behaviour a bug, not a feature.
> I've tried fiddling with layout.heights, layout.widths, and 
> axis.components but there are dozens of settings available.  For many
> of these settings, I have no idea what quantity I'm actually
> changing, other than by trial and error.  Is there an easier way?
Not really. The recommended thing to change is the settings (not the 
options) which all default to 1:
> str(trellis.par.get()$layout.heights)
List of 18
 $ top.padding      : num 1
 $ main             : num 1
 $ main.key.padding : num 1
 $ key.top          : num 1
 $ key.axis.padding : num 1
 ...

I was hoping that the names would be enough of a hint. Anything with 
'padding' in the name is space, and probably the ones you want to 
change.

Deepayan