aperm(base)
aperm()所属R语言包：base
Array Transposition
数组换位
译者：生物统计家园网 机器人LoveR
描述----------Description----------
Transpose an array by permuting its dimensions and optionally resizing it.
移调通过置换其尺寸和选择性地调整其大小的数组。
用法----------Usage----------
aperm(a, perm, ...)
## Default S3 method:[默认方法]
aperm(a, perm = NULL, resize = TRUE, ...)
## S3 method for class 'table'
aperm(a, perm = NULL, resize = TRUE, keep.class = TRUE, ...)
参数----------Arguments----------
参数：a
the array to be transposed.
数组被调换。
参数：perm
the subscript permutation vector, usually a permutation of the integers 1:n, where n is the number of dimensions of a. When a has named dimnames, it can be a character vector of length n giving a permutation of those names. The default (used whenever perm has zero length) is to reverse the order of the dimensions.
标置换向量，通常是一个整数的排列1:n，其中na尺寸。当a已的命名dimnames，它可以是一个长度n给那些名字排列的特征向量。默认（用时perm长度为零），是为了扭转尺寸。
参数：resize
a flag indicating whether the vector should be resized as well as having its elements reordered (default TRUE).
一个标志，表明向量是否应重新调整其元素重新排序以及（默认TRUE）。
参数：keep.class
logical indicating if the result should be of the same class as a.
逻辑表示如果结果应该是同一类的a。
参数：...
potential further arguments of methods.
潜在的方法进一步的论据。
值----------Value----------
A transposed version of array a, with subscripts permuted as indicated by the array perm. If resize is TRUE, the array is reshaped as well as having its elements permuted, the dimnames are also permuted; if resize = FALSE then the returned object has the same dimensions as a, and the dimnames are dropped. In each case other attributes are copied from a.
一个数组换位版本a标置换如阵列perm所示。如果resize是TRUE，阵列重塑以及其元素置换，dimnames也置换;如果resize = FALSE然后返回的对象具有相同的尺寸a，dimnames被丢弃。在每一种情况下，其他的属性被复制从a。
The function t provides a faster and more convenient way of transposing matrices.
功能t提供一个置换矩阵更快和更便捷的途径。
作者（S）----------Author(s)----------
Jonathan Rougier, <a href="mailto:J.C.Rougier@durham.ac.uk">J.C.Rougier@durham.ac.uk</a> did the
faster C implementation.
参考文献----------References----------
The New S Language. Wadsworth & Brooks/Cole.
参见----------See Also----------
t, to transpose matrices.
t，转置矩阵。
举例----------Examples----------
# interchange the first two subscripts on a 3-way array x[转乘前两个下标，上三路数组x]
x <- array(1:24, 2:4)
xt <- aperm(x, c(2,1,3))
stopifnot(t(xt[,,2]) == x[,,2],
t(xt[,,3]) == x[,,3],
t(xt[,,4]) == x[,,4])
UCB <- aperm(UCBAdmissions, c(2,1,3))
UCB[1,,]
summary(UCB)# UCB is still a continency table[脐血仍然是continency，表]
转载请注明:出自 生物统计家园网(http://www.biostatistic.net)。
注：
注1：为了方便大家学习，本文档为生物统计家园网机器人LoveR翻译而成，仅供个人R语言学习参考使用，生物统计家园保留版权。
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发表于 2012-2-16 20:33:32
