Permute the Order in Various Objects
Provides the generic function and
methods for permuting the order of various objects
including vectors, dendrograms (also hclust objects),
the order of observations in a dist object,
the rows and columns of a matrix, all dimensions of an array given a suitable ser_permutation
object.
permute(x, order, ...)
x |
an object (a list, a vector, a |
order |
an object of class |
... |
additional arguments for the permutation function. |
The permutation vectors in ser_permutation
are suitable if the number of permutation vectors matches the number
of dimensions of x and if the length of each permutation vector
has the same length as the corresponding dimension of x.
For 1-dimensional/1-mode data (list, vector, dist),
order can also be a single
permutation vector of class ser_permutation_vector or data which can be
automatically coerced to this class
(e.g. a numeric vector).
For dendrograms and hclust, subtrees are rotated to
represent the order best possible. If the order is not achived perfectly
then the user is warned. This behavior can be changed with the extra
parameter incompatible which can take the values
"warn" (default), "stop" or "ignore".
Michael Hahsler
ser_permutation,
dist in package stats.
## permute matrix m <- matrix(rnorm(10), 5, 2, dimnames = list(1:5, 1:2)) m ## permute rows and columns permute(m, ser_permutation(5:1, 2:1)) ## permute only columns permute(m, ser_permutation(NA, 2:1)) ## permute objects in a dist object d <- dist(m) d permute(d, ser_permutation(c(3,2,1,4,5))) ## permute a list l <- list(a=1:5, b=letters[1:3], c=0) l permute(l, c(2,3,1)) ## permute a dendrogram hc <- hclust(d) plot(hc) plot(permute(hc, 5:1))
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