Felipe Carrillo <mazatlanmexico <at> yahoo.com> writes:

> I need help merging rows.
> I am trying to merge the 'Month' column using \multirow. For example for the
column 'Week' I want July to be
> merged into one row(weeks 27,28,29,30) and so on for the following weeks.
> Below, I am creating a PDF using Sweave, MikTex,R-2.8.1 and windows XP to show
an example.

Thanks for the goodexample (Note to the "you did not quote completely" 
complainants: please use a thread reader to see the OP. This list
is clutter with too many > >> >>>).

I don't fully understand how the table should look like, mainly
how the Week display should look like. I suggest that you try to
not do the main formatting in latex/xtable, but rather use
function reshape or package reshape (below). The following
should give you a starter, I know it is not fully what you want.

I had some problems with the commas in you data set, so
I removed these.

Dieter


sampDat <- "Month Week Estpassage MedFL
July 27    665           34
July 28    2232        35
July 29    9241        35
July 30    28464               35
Aug  31    41049               35
Aug 32     82216               35
Aug 33     230411      35
Aug 34     358541      35
Sept 35    747839      35
Sept 36    459682      36
Sept 37    609567      36
Sept 38    979475      36
Sept 39    837189      36"
DF <- read.table(textConnection(sampDat), header = TRUE)

library(reshape)
DFm = melt(DF,id=c("Month","Week"))
cast(DFm,variable~Month+Week)

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