abIndex-class(Matrix)
abIndex-class()所属R语言包：Matrix
Class "abIndex" of Abstract Index Vectors
摘要索引向量类“abIndex”
译者：生物统计家园网 机器人LoveR
描述----------Description----------
The "abIndex" class, short for “Abstract Index Vector”, is used for dealing with large index vectors more efficiently, than using integer (or numeric) vectors of the kind 2:1000000 or c(0:1e5, 1000:1e6).
"abIndex"class，“摘要指数矢量”，用于更有效地处理大量的索引向量比使用整数（或numeric）的一种向量，<X >或2:1000000。
Note that the current implementation details are subject to change, and if you consider working with these classes, please contact the package maintainers (packageDescription("Matrix")$Maintainer).
请注意，目前的实施细则如有更改，如果你认为这些类的工作，请联络软件包维护者（packageDescription("Matrix")$Maintainer）。
类的对象----------Objects from the Class----------
Objects can be created by calls of the form new("abIndex", ...), but more easily and typically either by as(x, "abIndex") where x is an integer (valued) vector, or directly by abIseq() and combination c(...) of such.
可以创建对象的形式new("abIndex", ...)，但更容易和as(x, "abIndex")x是一个整数（值）的向量，或直接由abIseq()，通常要么电话结合c(...)等。
插槽----------Slots----------
kind: a character string, one of ("int32", "double", "rleDiff"), denoting the
kind：character字符串，("int32", "double", "rleDiff")，表示
x: Object of class "numLike"; is used (i.e., not of length 0) only iff the object is not
x：Object类的"numLike";使用（即不长0）只IFF的对象是不
rleD: object of class "rleDiff",
rleD：类对象"rleDiff"，
方法----------Methods----------
as.numeric, as.integer, as.vector signature(x = "abIndex"): ...
as.numeric，as.integer，as.vectorsignature(x = "abIndex")...
[ signature(x = "abIndex", i = "index", j = "ANY", drop = "ANY"): ...
[signature(x = "abIndex", i = "index", j = "ANY", drop = "ANY")...
coerce signature(from = "numeric", to = "abIndex"): ...
要挟signature(from = "numeric", to = "abIndex")...
coerce signature(from = "abIndex", to = "numeric"): ...
要挟signature(from = "abIndex", to = "numeric")...
coerce signature(from = "abIndex", to = "integer"): ...
要挟signature(from = "abIndex", to = "integer")...
length signature(x = "abIndex"): ...
长度signature(x = "abIndex")：...
Ops signature(e1 = "numeric", e2 = "abIndex"): These and the following arithmetic and logic operations are not yet implemented; see Ops for a
OPSsignature(e1 = "numeric", e2 = "abIndex")：这和下面的算术和逻辑运算尚未实施;看到Ops为
Ops signature(e1 = "abIndex", e2 = "abIndex"): ...
OPSsignature(e1 = "abIndex", e2 = "abIndex")...
Ops signature(e1 = "abIndex", e2 = "numeric"): ...
OPSsignature(e1 = "abIndex", e2 = "numeric")...
Summary signature(x = "abIndex"): ...
摘要signature(x = "abIndex")：...
show ("abIndex"): simple show method,
显示("abIndex")：简单的show方法，
is.na ("abIndex"): works analogously to regular vectors.
is.na("abIndex")“：工作方式类似于常规向量。
注意----------Note----------
This is currently experimental and not yet used for our own code. Please contact us (packageDescription("Matrix")$Maintainer), if you plan to make use of this class.
这是目前实验和尚未使用我们自己的代码。请与我们联系（packageDescription("Matrix")$Maintainer），如果你打算使用这个类。
Partly builds on ideas and code from Jens Oehlschlaegel, as implemented (around 2008, in the GPL'ed part of) package ff.
部分基础上的想法和从延Oehlschlaegel代码，作为实施（2008年左右，在GPL的部分）包ff。
参见----------See Also----------
rle (base) which is used here; numeric
rle（base），这是用在这里，“numeric
举例----------Examples----------
showClass("abIndex")
ii <- c(-3:40, 20:70)
str(ai <- as(ii, "abIndex"))# note[注意]
ai # -> show() method[ - >显示（）方法]
stopifnot(identical(-3:20,
as(abIseq1(-3,20), "vector")))
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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。
注2：由于是机器人自动翻译，难免有不准确之处，使用时仔细对照中、英文内容进行反复理解，可以帮助R语言的学习。
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发表于 2012-2-16 18:20:56
