| D_make.groups {lattice} | R Documentation |
Grouped data from multiple vectors
Description
Combines two or more vectors, possibly of different lengths, producing a data frame with a second column indicating which of these vectors that row came from. This is mostly useful for getting data into a form suitable for use in high level Lattice functions.
Usage
make.groups(...)
Arguments
... |
one or more vectors of the same type (coercion is attempted if not), or one or more data frames with similar columns, with possibly differing number of rows. |
Value
When all the input arguments are vectors, a data frame with two columns
data-
all the vectors supplied, concatenated
which-
factor indicating which vector the corresponding
datavalue came from
When all the input arguments are data frames, the result of
rbind applied to them, along with an additional
which column as described above.
Author(s)
Deepayan Sarkar Deepayan.Sarkar@R-project.org
See Also
Examples
sim.dat <-
make.groups(uniform = runif(200),
exponential = rexp(175),
lognormal = rlnorm(150),
normal = rnorm(125))
qqmath( ~ data | which, sim.dat, scales = list(y = "free"))