Dear R Group
I have the following data for which I am trying to create subject wise 
lattice plot for a given attribute and product .
though the lattice plot is generated, for some reasons that i dont 
understand in each plot the subject panels take a random order, I would 
rather want all the plots to display the subject order in the same order 
as how i have ordered this particular factor level.

Would appreciate if someone would provide me the parameter that i need to 
pass to the xyplot function of library(lattice) to get this sorted out.


##the data for illustrative purpose..is as follows:

MyData<- structure(list(Subj = structure(c(3L, 3L, 3L, 3L, 3L, 3L, 3L, 
3L, 6L, 6L, 6L, 6L, 6L, 6L, 6L, 6L, 9L, 9L, 9L, 9L, 9L, 9L, 9L, 
9L, 10L, 10L, 10L, 10L, 10L, 10L, 10L, 10L, 1L, 1L, 1L, 1L, 1L, 
1L, 1L, 1L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 4L, 4L, 4L, 4L, 4L, 
4L, 4L, 4L, 5L, 5L, 5L, 5L, 5L, 5L, 5L, 5L, 7L, 7L, 7L, 7L, 7L, 
7L, 7L, 7L, 8L, 8L, 8L, 8L, 8L, 8L, 8L, 8L, 11L, 11L, 11L, 11L, 
11L, 11L, 11L, 11L, 1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L, 2L, 2L, 2L, 
2L, 2L, 2L, 2L, 2L, 4L, 4L, 4L, 4L, 4L, 4L, 4L, 4L, 5L, 5L, 5L, 
5L, 5L, 5L, 5L, 5L, 7L, 7L, 7L, 7L, 7L, 7L, 7L, 7L, 8L, 8L, 8L, 
8L, 8L, 8L, 8L, 8L, 11L, 11L, 11L, 11L, 11L, 11L, 11L, 11L, 3L, 
3L, 3L, 3L, 3L, 3L, 3L, 3L, 6L, 6L, 6L, 6L, 6L, 6L, 6L, 6L, 9L, 
9L, 9L, 9L, 9L, 9L, 9L, 9L, 10L, 10L, 10L, 10L, 10L, 10L, 10L, 
10L, 3L, 3L, 3L, 3L, 3L, 3L, 3L, 3L, 6L, 6L, 6L, 6L, 6L, 6L, 
6L, 6L, 9L, 9L, 9L, 9L, 9L, 9L, 9L, 9L, 10L, 10L, 10L, 10L, 10L, 
10L, 10L, 10L, 1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L, 2L, 2L, 2L, 2L, 
2L, 2L, 2L, 2L, 4L, 4L, 4L, 4L, 4L, 4L, 4L, 4L, 5L, 5L, 5L, 5L, 
5L, 5L, 5L, 5L, 7L, 7L, 7L, 7L, 7L, 7L, 7L, 7L, 8L, 8L, 8L, 8L, 
8L, 8L, 8L, 8L, 11L, 11L, 11L, 11L, 11L, 11L, 11L, 11L, 1L, 1L, 
1L, 1L, 1L, 1L, 1L, 1L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 4L, 4L, 
4L, 4L, 4L, 4L, 4L, 4L, 5L, 5L, 5L, 5L, 5L, 5L, 5L, 5L, 7L, 7L, 
7L, 7L, 7L, 7L, 7L, 7L, 8L, 8L, 8L, 8L, 8L, 8L, 8L, 8L, 11L, 
11L, 11L, 11L, 11L, 11L, 11L, 11L, 3L, 3L, 3L, 3L, 3L, 3L, 3L, 
3L, 6L, 6L, 6L, 6L, 6L, 6L, 6L, 6L, 9L, 9L, 9L, 9L, 9L, 9L, 9L, 
9L, 10L, 10L, 10L, 10L, 10L, 10L, 10L, 10L), .Label = c("S1", 
"S10", "S11", "S12", "S13", "S3", "S4", "S5", "S6", "S8", "S9"
), class = "factor"), Product = 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, 2L, 2L, 2L, 2L, 2L, 
2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 
2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 
2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 
2L, 2L, 2L, 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, 1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L, 
1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L, 2L, 2L, 2L, 2L, 2L, 
2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 
2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 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, 2L, 2L, 2L, 2L, 2L, 
2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 
2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 
2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 
2L, 2L, 2L, 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, 1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L, 
1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L, 2L, 2L, 2L, 2L, 2L, 
2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 
2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L), .Label = c("a", 
"b"), class = "factor"), Arm = 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, 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, 1L, 1L, 1L, 1L, 1L, 
1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L, 
1L, 1L, 1L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 
2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 
2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 
2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 
2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 
2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 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, 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, 1L, 1L, 1L, 1L, 1L, 
1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L, 
1L, 1L, 1L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 
2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 
2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 
2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 
2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 
2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L), .Label = c("L", 
"R"), class = "factor"), Attribute = 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, 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, 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, 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, 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, 1L, 1L, 1L, 
1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L, 2L, 2L, 2L, 
2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 
2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 
2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 
2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 
2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 
2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 
2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 
2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 
2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 
2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 
2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L), .Label = c("AttriA", 
"AttriB"), class = "factor"), Time = structure(c(1L, 2L, 3L, 
4L, 5L, 6L, 7L, 8L, 1L, 2L, 3L, 4L, 5L, 6L, 7L, 8L, 1L, 2L, 3L, 
4L, 5L, 6L, 7L, 8L, 1L, 2L, 3L, 4L, 5L, 6L, 7L, 8L, 1L, 2L, 3L, 
4L, 5L, 6L, 7L, 8L, 1L, 2L, 3L, 4L, 5L, 6L, 7L, 8L, 1L, 2L, 3L, 
4L, 5L, 6L, 7L, 8L, 1L, 2L, 3L, 4L, 5L, 6L, 7L, 8L, 1L, 2L, 3L, 
4L, 5L, 6L, 7L, 8L, 1L, 2L, 3L, 4L, 5L, 6L, 7L, 8L, 1L, 2L, 3L, 
4L, 5L, 6L, 7L, 8L, 1L, 2L, 3L, 4L, 5L, 6L, 7L, 8L, 1L, 2L, 3L, 
4L, 5L, 6L, 7L, 8L, 1L, 2L, 3L, 4L, 5L, 6L, 7L, 8L, 1L, 2L, 3L, 
4L, 5L, 6L, 7L, 8L, 1L, 2L, 3L, 4L, 5L, 6L, 7L, 8L, 1L, 2L, 3L, 
4L, 5L, 6L, 7L, 8L, 1L, 2L, 3L, 4L, 5L, 6L, 7L, 8L, 1L, 2L, 3L, 
4L, 5L, 6L, 7L, 8L, 1L, 2L, 3L, 4L, 5L, 6L, 7L, 8L, 1L, 2L, 3L, 
4L, 5L, 6L, 7L, 8L, 1L, 2L, 3L, 4L, 5L, 6L, 7L, 8L, 1L, 2L, 3L, 
4L, 5L, 6L, 7L, 8L, 1L, 2L, 3L, 4L, 5L, 6L, 7L, 8L, 1L, 2L, 3L, 
4L, 5L, 6L, 7L, 8L, 1L, 2L, 3L, 4L, 5L, 6L, 7L, 8L, 1L, 2L, 3L, 
4L, 5L, 6L, 7L, 8L, 1L, 2L, 3L, 4L, 5L, 6L, 7L, 8L, 1L, 2L, 3L, 
4L, 5L, 6L, 7L, 8L, 1L, 2L, 3L, 4L, 5L, 6L, 7L, 8L, 1L, 2L, 3L, 
4L, 5L, 6L, 7L, 8L, 1L, 2L, 3L, 4L, 5L, 6L, 7L, 8L, 1L, 2L, 3L, 
4L, 5L, 6L, 7L, 8L, 1L, 2L, 3L, 4L, 5L, 6L, 7L, 8L, 1L, 2L, 3L, 
4L, 5L, 6L, 7L, 8L, 1L, 2L, 3L, 4L, 5L, 6L, 7L, 8L, 1L, 2L, 3L, 
4L, 5L, 6L, 7L, 8L, 1L, 2L, 3L, 4L, 5L, 6L, 7L, 8L, 1L, 2L, 3L, 
4L, 5L, 6L, 7L, 8L, 1L, 2L, 3L, 4L, 5L, 6L, 7L, 8L, 1L, 2L, 3L, 
4L, 5L, 6L, 7L, 8L, 1L, 2L, 3L, 4L, 5L, 6L, 7L, 8L, 1L, 2L, 3L, 
4L, 5L, 6L, 7L, 8L, 1L, 2L, 3L, 4L, 5L, 6L, 7L, 8L), .Label = c("T0", 
"T1", "T2", "T3", "T4", "T5", "T6", "T7"), class = "factor"), 
    value = c(39.5527423278832, 38.2473086972328, 40.2276345888737, 
    37.5267332387073, 40.9688951303111, 39.0569778014684, 
39.1695786007607, 
    38.9139593338983, 68.8265651458469, 72.0887495716813, 
67.5611670846489, 
    66.9874884774268, 66.9829433510606, 54.8956638696188, 
63.0168969989417, 
    65.6194764863213, 66.4129384714848, 66.0961638072511, 
68.9661166309607, 
    68.7059517735383, 65.7542747314885, 65.5069438367477, 
64.7683246003315, 
    61.4962919814996, 69.5762947663818, 73.3430582378711, 
76.8645584330803, 
    68.2802524581975, 77.8816834151128, 74.2317212282283, 
70.4892680115894, 
    73.5430313565372, 45.0183417657248, 48.1530494831865, 
46.1558267920891, 
    48.6541405845911, 48.4048804759923, 48.590343912936, 44.7362547527865, 

    42.6373136974049, 39.9917820318598, 43.4586441692621, 
41.6364183563171, 
    42.8906355926352, 45.5495273145838, 41.3577962405852, 41.496338708892, 

    40.0151968165421, 45.5648864982887, 46.2956996070121, 
47.0280057728853, 
    50.1831679877159, 51.061682921112, 45.9831040407059, 44.9747480866787, 

    49.6665131229635, 54.8281039296233, 54.1930629171256, 
54.4341268439816, 
    57.1044051058105, 56.1143459282325, 52.6161245346639, 
52.7130458240943, 
    55.4358255649899, 47.2220107045472, 47.3389267304398, 
46.2106468232384, 
    48.9990363616358, 46.8056280265232, 46.5981260727775, 
46.4927574552312, 
    40.3333491167334, 62.2287823821622, 66.3810749127077, 
67.2394807083061, 
    62.4429875125554, 69.0376706648671, 60.2812609331127, 61.455201318328, 

    59.9863854008917, 62.2997182356239, 68.3165884503308, 
70.8613200740368, 
    75.5343092931554, 68.0613856491741, 67.8297794393095, 69.723445715177, 

    68.2294718401127, 52.8140766072603, 51.4240493093108, 
49.1567458446157, 
    52.7574433410593, 51.8096008153661, 51.0542236981057, 
49.1650793229206, 
    46.1961387381546, 39.3501757447082, 40.6370147384917, 
42.6126353906914, 
    42.8371247270351, 45.6224375518759, 38.1946693028616, 
42.6841902106385, 
    41.2891110860076, 46.5589402020299, 46.9236938185125, 
46.7985819317017, 
    52.9563382730808, 52.7678198507564, 42.6784974818896, 
46.0254807534733, 
    49.3617924018815, 55.0347336430881, 53.0553009508891, 
59.1754785059011, 
    59.2551361838499, 58.7606127906148, 56.0068865579661, 
59.7877691476509, 
    59.9894635155904, 45.8292743149289, 44.3975346123602, 
44.0878763837905, 
    43.0034203212678, 44.7694956749990, 44.5206026642237, 
44.1129676323369, 
    41.1441655434737, 64.502950186561, 66.2596818647181, 66.9718770730599, 

    68.3492812036726, 71.1329167451021, 60.993158766883, 64.0476800619917, 

    59.5722548586232, 69.1060115847223, 68.8225246639702, 
71.3984976174081, 
    80.9630180588849, 73.007714590984, 65.7790674687866, 68.8673355306755, 

    66.8813383526656, 40.0423309528637, 44.1216443512537, 
41.9734395557559, 
    44.8434380300801, 43.7494322571724, 43.3183356186337, 
45.5420445201619, 
    42.5147260103379, 68.7745002341477, 61.981198669435, 61.7864827933066, 

    60.3458594826638, 59.9697661699882, 53.9643718467014, 
59.1755018103991, 
    59.2276568453173, 62.7915792989106, 71.0620731987689, 
72.2036228167234, 
    70.9247270575656, 67.1627603989188, 69.8883404495198, 
63.0049593358823, 
    64.8912785345249, 68.8781924408982, 74.137601748426, 75.2732261184303, 

    71.669750963672, 74.4341280041274, 76.2382402210529, 69.7026459277572, 

    76.5074726515534, 29.2874363361783, 27.2892266662294, 
29.5616488492521, 
    29.6852458522043, 30.5496200171305, 29.9966252445121, 
29.1288540248101, 
    27.4806129668759, 33.5863501946243, 30.4931479044075, 
29.5862807824957, 
    34.9382017751209, 35.238424232798, 29.4052475587535, 33.0798423075101, 

    31.3567180682194, 33.4690209827123, 30.6523035293150, 
32.6208075805269, 
    33.9407265800815, 31.0650808724465, 36.7534951846668, 
34.6967011594745, 
    31.9567044598027, 44.5158738295474, 40.4690204233383, 
38.0597778223743, 
    37.8034937870776, 35.1720350896499, 39.8550085954103, 
34.9099191361032, 
    42.0149439902365, 26.2151235666232, 23.5679852219729, 
24.2001786793751, 
    23.6961503280406, 23.7185784815809, 25.3066274885425, 
24.0292003617619, 
    24.2505451653069, 27.0291768503551, 27.9586095806653, 
27.1539912074178, 
    27.3800648825246, 27.0086310697033, 29.5006091073482, 
27.6618986740352, 
    26.6054039275563, 26.7544589952818, 25.7739723955002, 
24.7493173361881, 
    24.8974539247832, 26.0066344196213, 25.7242948862424, 
24.2129429825322, 
    26.2810081950791, 32.8501876144134, 27.2087875772192, 
22.9241752520302, 
    23.9219026236064, 27.8607929641585, 27.7779664335406, 
25.6974359198254, 
    26.0076906518561, 28.8549852933942, 27.2116802644414, 
28.5718875220588, 
    30.5721859479267, 29.2724683799154, 29.7833383429998, 
29.0348479362964, 
    27.1223342602551, 32.5582746876519, 28.4460181623792, 
30.5181241094846, 
    27.8313626195291, 36.6535660010998, 31.2270378533636, 
30.7505338399547, 
    28.3032529970344, 32.3568559611009, 34.9553492819238, 
35.7759456755808, 
    36.0195354653364, 38.5285002594439, 35.7380230921731, 
37.1484588196843, 
    38.5416308644471, 24.8506692697752, 24.6343520347229, 
23.6083195613371, 
    24.7607264684248, 22.9854229667107, 23.9036751221927, 
24.0387963674900, 
    22.7723194255264, 30.3793074740804, 28.8639832951117, 
28.3030690013896, 
    27.8655679757535, 29.1997887609265, 30.1487803931287, 
29.2987532171346, 
    28.5871764431944, 24.6444755508312, 24.7330180273872, 
23.7338446480537, 
    25.8596684061866, 26.0787857361113, 24.8953653206929, 
23.5625674439808, 
    24.479442599818, 29.6545075345955, 25.6090083380698, 27.1114528433399, 

    29.5090563448938, 31.455338578686, 31.5408279032055, 32.0051421579701, 

    33.4618122321904, 27.4889692245983, 25.5464291578372, 
24.5476688346391, 
    25.2081446883923, 26.3672783411296, 25.6265928833026, 
27.1950139669246, 
    27.130001618485, 28.6347421265670, 26.7649268696797, 28.0626929191564, 

    30.4520327581967, 30.4717296368313, 29.8812011276167, 
30.4064647569007, 
    30.7831770362286, 37.7827415537242, 35.0879233395691, 
34.7668091883955, 
    37.3427148382295, 38.3775395012458, 36.7485828173724, 38.193636145425, 

    34.5786595343394, 28.6171348871096, 27.9470627780942, 
29.8327633149340, 
    29.6097653173267, 30.0836756702669, 31.0359954571051, 
31.0662062327447, 
    28.8585430558031, 29.7252130104938, 26.5553131151419, 
28.0655400327958, 
    28.7575356242266, 28.3515991163835, 26.4610318654439, 
27.2362207214083, 
    28.0005735091048, 29.1041755824943, 29.5347668690827, 
32.1870020976934, 
    31.1451531051784, 25.2860128452551, 29.1578475612553, 
27.0033058437616, 
    24.4368356738120, 39.7697712026109, 35.1675811365275, 
32.1336514906396, 
    35.5524206935849, 33.5035236183325, 34.2439798004073, 
33.6508805746601, 
    33.8661875340464)), .Names = c("Subj", "Product", "Arm", 
"Attribute", "Time", "value"), row.names = c(NA, 352L), class = 
"data.frame")


## Here is the code to create lattice plot subject wise, for each 
attribute and product from the study.. 
##This code creates a pdf file output of all plots and saves the file in 
the destination given.

library(lattice)
Attributeindata<-levels(MyData$Attribute)
productindata<-levels(MyData$Product)
pdf(file="D:/Test/latticeplotsbysubject.pdf")
for(i in 1:length(Attributeindata))
{
        for(j in 1:length(productindata))
        {
print(xyplot(value ~ Time | Subj, 
data=subset(MyData,Attribute==Attributeindata[i] & Product=="b"),layout = 
c(6,3), aspect = "xy",, type = c("g", "p", 
"r"),drop.unused.levels=TRUE,index.cond = function(x,y) coef(lm(y ~ 
x))[1],ylab = paste("value of",Attributeindata[i],"for 
Product",productindata[j]),
             xlab = "Time",))
             }
}


##On examining the pdf file, you wil find that the order of subjects as 
appearing in each page of plot is different.
## I would want the order of subjects to appear in the same order as
##follows: "S1","S3","S4","S5","S6","S8","S9","S10","S11", "S12","S13"
##I have tried reorder function on the factor level "Subj" but it does not 
give the desired result.

Any help in modifying the code above to meet the requirement would be 
highly appreciated.

Thanks & Regards
Vijayan Padmanabhan


"What is expressed without proof can be denied without proof" - Euclide. 

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