R help - Oct 2011 - lattice-dotplot: resize axis

dear all,

I want to make a dotplot with ratings from Items in 6 ItemsGroups.
I reordered the items by rating within each group.
I plotted the items by rating conditional on ItemGroup.
The ordering works as I wanted but my y-aches labels (items) within  
each ItemGroup are now unequally spaced, e.g., in some panels there is a
gap between one lower rated item and the next higher, to give a picture

items=a,e,f,g

ItemGroup=n
-----------------
g|      .
f|   .
e|  .
  |
  |
  |
a| .
-----------------


How can I correct this? What have I overlooked?

# code i've used (from latticeExtra/utilities/resize panels)
library(latticeExtra)


mean.ratings$item.name <-
     with(mean.ratings, reorder(reorder(item, rating),
                         as.numeric(ItemGroup)))
dpratings <-
     dotplot(item.name ~ rating | reorder(ItemGroup, rating),
             data = mean.ratings, layout = c(1, 6), xlim=c(1,6),
	    aspect = .1,
             scales = list(y = list(relation = "free", cex=.5)))

## approximate
resizePanels(dpratings,
              h = with(mean.ratings, table(reorder(ItemGroup, rating))))

thanks,
Ren?

On Wed, Oct 5, 2011 at 5:00 PM, Ren? Mayer
<mayer at psychologie.tu-dresden.de> wrote:
> dear all,
>
> I want to make a dotplot with ratings from Items in 6 ItemsGroups.
> I reordered the items by rating within each group.
> I plotted the items by rating conditional on ItemGroup.
> The ordering works as I wanted but my y-aches labels (items) within each
> ItemGroup are now unequally spaced, e.g., in some panels there is a
> gap between one lower rated item and the next higher, to give a picture
>
> items=a,e,f,g
>
> ItemGroup=n
> -----------------
> g| ? ? ?.
> f| ? .
> e| ?.
> ?|
> ?|
> ?|
> a| .
> -----------------
>
>
> How can I correct this? What have I overlooked?
A reproducible example would help.

-Deepayan
>
> # code i've used (from latticeExtra/utilities/resize panels)
> library(latticeExtra)
>
>
> mean.ratings$item.name <-
> ? ?with(mean.ratings, reorder(reorder(item, rating),
> ? ? ? ? ? ? ? ? ? ? ? ?as.numeric(ItemGroup)))
> dpratings <-
> ? ?dotplot(item.name ~ rating | reorder(ItemGroup, rating),
> ? ? ? ? ? ?data = mean.ratings, layout = c(1, 6), xlim=c(1,6),
> ? ? ? ? ? ?aspect = .1,
> ? ? ? ? ? ?scales = list(y = list(relation = "free", cex=.5)))
>
> ## approximate
> resizePanels(dpratings,
> ? ? ? ? ? ? h = with(mean.ratings, table(reorder(ItemGroup, rating))))
>
> thanks,
> Ren?
>
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