Plotting matrix rows with lattice graphics?

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Maybe:

xyplot(values ~ ind|ind, data = stack(split(m, 1:4)))
Sorry if this is an FAQ, but I haven't found the answer (yet)...

 I'm trying to plot each row of a simple numeric matrix in a separate
 panel using the layout features of lattice, but can't make it work -
 help would be appreciated!

 Example:

  > m <- matrix(seq(1:20), nrow=4)

  > m
      [,1] [,2] [,3] [,4] [,5]
 [1,]    1    5    9   13   17
 [2,]    2    6   10   14   18
 [3,]    3    7   11   15   19
 [4,]    4    8   12   16   20

 The following will plot one row in one box:

  > xyplot(m[1,] ~ seq(1:5))
 but this gives all rows in the same box:

  > xyplot(m ~ seq(1:5))
 Since there are no factors, how can I set conditioning variable to get
 what I want, or is there a better way to do this?

 Thanks in advance

 Ron

 Ron Bonner
 arbi56 at gmail.com
 skype: rbonners

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Henrique Dallazuanna
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25? 25' 40" S 49? 16' 22" O
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Thanks Henrique - that didn't exactly solve my problem but gave me enough to
 do so!

 In your solution each row is plotted as a vertical row of points at the
 value of 'ind' while I wanted to plot the values against the column numbers,
 i.e. 1 to 5.

 The solution was to create a vector of column numbers, replicate it and plot
 against it, still using 'ind' as the conditioning variable:
Also, take a look at ?as.data.frame.table, which should help you
create a suitable data frame directly.

-Deepayan