[R] using barchart in lattice package and conditioning

[markleeds at verizon.net]

I have the data structure below and I'm attempting to send it into 
barchart using the R code below it. I don't get an error but I don't get 
any output either. Deepyan's new Lattice book is amazing and there are 
some examples sort of similar to what i'm doing  but I couldn't see a 
way of using the formula interface to condition on what I wanted to 
condition on so I decided to use split instead.  I'm not sure if that's 
where my problem lies but if anyone has experience in using the barchart 
function in the lattice package and could take a look at what I'm trying 
to do,
it would really be appreciated. thanks.

p.s: my data set is already tallied by proportion so i don't need to use 
prop.table and i also have other additional columns in my data set.
these two issues are complicating matters for me also. i'm a lattice 
newbie.

stocks.all<-structure(list(group = structure(c(1L, 1L, 1L, 1L, 1L, 1L, 
1L,
1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L,
1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L), .Label = "AVT.NYSE", class = 
"factor"),
     buckets = structure(c(8L, 6L, 4L, 2L, 1L, 3L, 5L, 7L, 8L,
     6L, 4L, 2L, 1L, 3L, 5L, 7L, 8L, 6L, 4L, 2L, 1L, 3L, 5L, 7L,
     8L, 6L, 4L, 2L, 1L, 3L, 5L, 7L), .Label = c("[0,0.25", "[-0.25,0]",
     "[0.25,0.50]", "[-0.5,-0.25]", "[0.5,0.75]", "[-0.75,-0.50]",
     "[0.75,1.0]", "[-1.0,-0.75]"), class = "factor"), neutral = 
c(0.345901639344262,
     0.360117302052786, 0.354304635761589, 0.354319180087848,
     0.365524402907580, 0.359455958549223, 0.340284360189573,
     0.369763205828780, 0.265100671140940, 0.250599520383693,
     0.264124293785311, 0.257874015748031, 0.252083333333333,
     0.260869565217391, 0.263257575757576, 0.341911764705882,
     0.197761194029851, 0.192307692307692, 0.137724550898204,
     0.184647302904564, 0.176991150442478, 0.173796791443850,
     0.217573221757322, 0.181818181818182, 0.151162790697674,
     0.163865546218487, 0.167346938775510, 0.159638554216867,
     0.169934640522876, 0.133047210300429, 0.122093023255814,
     0.223529411764706), negative = c(0.304918032786885, 
0.304985337243402,
     0.310596026490066, 0.287457296242069, 0.285565939771547,
     0.264248704663212, 0.297630331753555, 0.231329690346084,
     0.345637583892617, 0.34652278177458, 0.353107344632768, 
0.319881889763780,
     0.341666666666667, 0.329923273657289, 0.348484848484849,
     0.301470588235294, 0.365671641791045, 0.384615384615385,
     0.38622754491018, 0.369294605809129, 0.371681415929204, 
0.382352941176471,
     0.338912133891213, 0.340909090909091, 0.406976744186047,
     0.399159663865546, 0.355102040816327, 0.355421686746988,
     0.398692810457516, 0.450643776824034, 0.337209302325581,
     0.282352941176471), positive = c(0.349180327868852, 
0.334897360703812,
     0.335099337748344, 0.358223523670083, 0.348909657320872,
     0.376295336787565, 0.362085308056872, 0.398907103825137,
     0.389261744966443, 0.402877697841727, 0.382768361581921,
     0.422244094488189, 0.40625, 0.40920716112532, 0.388257575757576,
     0.356617647058824, 0.436567164179104, 0.423076923076923,
     0.476047904191617, 0.446058091286307, 0.451327433628319,
     0.443850267379679, 0.443514644351464, 0.477272727272727,
     0.441860465116279, 0.436974789915966, 0.477551020408163,
     0.484939759036145, 0.431372549019608, 0.416309012875536,
     0.540697674418605, 0.494117647058824), wt = structure(c(1L,
     1L, 1L, 1L, 1L, 1L, 1L, 1L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L,
     3L, 3L, 3L, 3L, 3L, 3L, 3L, 3L, 4L, 4L, 4L, 4L, 4L, 4L, 4L,
     4L), .Label = c("5.0", "10.0", "20.0", "30.0"), class = "factor")), 
.Names = c("group",
"buckets", "neutral", "negative", "positive", "wt"), row.names = c(NA,
32L), class = "data.frame")



# R CODE FOR BARCHART
#============================================================

temp<-split(stocks.all,list(stocks.all$group,stocks.all$wt))
print(temp)

lapply(temp, function(.df){
print(barchart(.df, stack = TRUE,  auto.key = list(columns = 3)))
})