make.groups 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
|
all the vectors supplied, concatenated |
|
factor indicating which vector the corresponding |
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"))
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Licensed under the GNU General Public License.