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  The old settings seem to have been replaced by a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?

str(trellis.par.get()$layout.heights)

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.

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.

On Mon, Nov 29, 2004 at 11:23:35PM -0600, Deepayan Sarkar wrote:

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.

It was a pretty convenient bug! ;)

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.

I've fiddled with these and can pretty much get what I want.  But
without really understanding what I'm doing.  It isn't clear to me,
for instance, why the "key" settings affect my plot when no key is
drawn.

I've fiddled with these and can pretty much get what I want.  But
without really understanding what I'm doing.  It isn't clear to me,
for instance, why the "key" settings affect my plot when no key is
drawn.

It shouldn't (unless you have messed with lattice.options()). Can you 
provide an example? The following doesn't do anything unusual for me:

xyplot(1~1, 
       par.settings = 
       list(layout.heights = list(key.top = 100, key.bottom = 100)))

(I'm running r-devel though, so there's a small chance something might 
be different.)

On Tue, Nov 30, 2004 at 04:33:50PM -0600, Deepayan Sarkar wrote:

I've fiddled with these and can pretty much get what I want.  But
without really understanding what I'm doing.  It isn't clear to
me, for instance, why the "key" settings affect my plot when no
key is drawn.

It shouldn't (unless you have messed with lattice.options()). Can
you provide an example? The following doesn't do anything unusual
for me:

xyplot(1~1,
       par.settings =
       list(layout.heights = list(key.top = 100, key.bottom =
100)))

(I'm running r-devel though, so there's a small chance something
might be different.)

I'm only talking about the *.padding options, like:

  xyplot(1:4~1:4,
         par.settings=list(layout.heights=list(key.axis.padding=10)))