R语言:dMatrix-class()函数中文帮助文档(中英文对照)

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dMatrix-class(Matrix)
dMatrix-class()所属R语言包：Matrix

                                        (Virtual) Class "dMatrix" of "double" Matrices
                                         （虚拟）类“的”双重“矩阵”dMatrix

                                         译者：生物统计家园网 机器人LoveR

描述----------Description----------

The dMatrix class is a virtual class contained by all actual classes of numeric matrices in the Matrix package.  Similarly, all the actual classes of logical matrices inherit from the lMatrix class.
类dMatrix是一个虚拟所有Matrix包中的数字矩阵的实际类中的类。同样，所有的逻辑矩阵的实际类继承自lMatrix类。


插槽----------Slots----------

Common to all matrix object in the package:
常见的包中所有的矩阵对象：




Dim: Object of class "integer" - the dimensions of the matrix - must be an integer vector with exactly two
Dim"integer" - 矩阵的尺寸 - 必须是一个整数向量正好有两个：对象类




Dimnames: list of length two; each component containing NULL or a character vector length
Dimnames：长度为二的名单;每个组件包含NULL或一个character向量的长度


方法----------Methods----------

There are (relatively simple) group methods (see, e.g., Arith)
有组（相对简单）的方法（例如，见Arith）




Arith signature(e1 = "dMatrix", e2 = "dMatrix"): ...
arithsignature(e1 = "dMatrix", e2 = "dMatrix")...




Arith signature(e1 = "dMatrix", e2 = "numeric"): ...
arithsignature(e1 = "dMatrix", e2 = "numeric")...




Arith signature(e1 = "numeric", e2 = "dMatrix"): ...
arithsignature(e1 = "numeric", e2 = "dMatrix")...




Math signature(x = "dMatrix"): ...
数学signature(x = "dMatrix")：...




Math2 signature(x = "dMatrix", digits = "numeric"):
math2signature(x = "dMatrix", digits = "numeric")：




Compare signature(e1 = "numeric", e2 = "dMatrix"): ...
比较signature(e1 = "numeric", e2 = "dMatrix")：...




Compare signature(e1 = "dMatrix", e2 = "numeric"): ...
比较signature(e1 = "dMatrix", e2 = "numeric")：...




Compare signature(e1 = "dMatrix", e2 = "dMatrix"): ...
比较signature(e1 = "dMatrix", e2 = "dMatrix")：...




Summary signature(x = "dMatrix"): The "Summary" group contains the seven functions max(), min(), range(), prod(), sum(),
摘要signature(x = "dMatrix")："Summary"组包含七大功能max()，min()，range()，prod()，sum()

The following methods are also defined for all double matrices:
下面的方法也被定义为所有的双矩阵：




coerce signature(from = "dMatrix", to = "matrix"): ...
要挟signature(from = "dMatrix", to = "matrix")...




expm signature(x = "dMatrix"): computes the
expmsignature(x = "dMatrix")：计算




zapsmall signature(x = "dMatrix"): ...
zapsmallsignature(x = "dMatrix")...

The following methods are defined for all logical matrices:
被定义为所有逻辑矩阵下列方法：




which signature(x = "lsparseMatrix") and many other subclasses of "lMatrix": as the base function which(x, arr.ind) returns the indices of the TRUE entries in x; if arr.ind is true,
signature(x = "lsparseMatrix")"lMatrix"和许多其他的子类：base函数如果which(x, arr.ind)返回TRUE的x项指标; arr.ind是真实的，


参见----------See Also----------

The nonzero-pattern matrix class nMatrix, which can be used to store non-NA logical matrices even more compactly.
模式的非零矩阵类nMatrix，它可以用来储存非NAlogical矩阵更紧凑。

The numeric matrix classes dgeMatrix, dgCMatrix, and Matrix.
数字矩阵类dgeMatrix，dgCMatrix，Matrix。


举例----------Examples----------


showClass("dMatrix")

set.seed(101)
round(Matrix(rnorm(28), 4,7), 2)
(M <- zapsmall(Matrix(rlnorm(56, sd=10), 4,14)))
table(as.logical(M == 0))

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