dsCMatrix-class(Matrix)
dsCMatrix-class()所属R语言包：Matrix
Numeric Symmetric Sparse (column compressed) Matrices
数字对称稀疏矩阵（列压缩）
译者：生物统计家园网 机器人LoveR
描述----------Description----------
The dsCMatrix class is a class of symmetric, sparse numeric matrices in the compressed, column-oriented format. In this implementation the non-zero elements in the columns are sorted into increasing row order.<br> The dsTMatrix class is the class of symmetric, sparse numeric matrices in triplet format.
dsCMatrix类是一类对称，稀疏，面向列的格式压缩的数字矩阵。列中的非零元素，在此实现增加行顺序排序。参考dsTMatrix类是类对称，稀疏三重格式的数字矩阵。
类的对象----------Objects from the Class----------
Objects can be created by calls of the form new("dsCMatrix", ...) or new("dsTMatrix", ...) or (for dsCMatrix) also automatically from Matrix(.).
可以通过电话的形式new("dsCMatrix", ...)或new("dsTMatrix", ...)（dsCMatrix）也自动从Matrix(.)创建对象。
插槽----------Slots----------
uplo: A character object indicating if the upper
uplo：一个字符对象表示，如果上层
i: Object of class "integer" of length nnZ (half number of non-zero elements). These are the row
i：Object类的"integer"长度，NNZ（非零元素的一半数量）。这些行
p: (only in class "dsCMatrix" an integer vector for providing pointers, one for each
p：（只在课堂上的"dsCMatrix"integer向量为指针，为每一个
j: (only in class "dsTMatrix" Object of class "integer" of length nnZ (as i). These are the column numbers for each non-zero element in the lower triangle of
j：（只在课堂上"dsTMatrix" Object类的"integer"长度NNZ（i）。这些都是在较低的三角形的每个非零元素的列号
x: Object of class "numeric" of length nnZ –
x：Object类的"numeric"长度NNZ -
factors: Object of class "list" - a list
factors：Object类的"list" - 列表
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
延伸----------Extends----------
Both classes extend classes and symmetricMatrix dsparseMatrix directly; dsCMatrix further directly extends CsparseMatrix, where dsTMatrix does TsparseMatrix.
这两个类扩展类和symmetricMatrixdsparseMatrix直接dsCMatrix进一步直接延伸CsparseMatrix，dsTMatrix不TsparseMatrix。
方法----------Methods----------
solve signature(a = "dsCMatrix", b = "dsparseMatrix"): Solve a linear system of equations defined by x using a Cholesky decomposition. All steps will be based on sparse
解决signature(a = "dsCMatrix", b = "dsparseMatrix")：解决一个定义x使用Cholesky分解的线性方程系统。所有步骤，将基于稀疏
solve signature(a = "dsCMatrix", b = "matrix"): Solve a linear system of equations defined by x using a Cholesky
解决signature(a = "dsCMatrix", b = "matrix")：解决了x使用的Cholesky定义方程的线性系统
chol signature(x = "dsCMatrix", pivot = "logical"): Returns (and stores) the Cholesky decomposition of x, see
哲signature(x = "dsCMatrix", pivot = "logical")：返回（店）x，看到的Cholesky分解
Cholesky signature(A = "dsCMatrix",...): Computes more flexibly Cholesky decompositions,
乔列斯基signature(A = "dsCMatrix",...)：计算更灵活的Cholesky分解，
determinant signature(x = "dsCMatrix", logarithm = "missing"): Evaluate the determinant of x on the
的行列式signature(x = "dsCMatrix", logarithm = "missing")：评估x的行列式
determinant signature(x = "dsCMatrix", logarithm = "logical"): Evaluate the determinant of x on the logarithm scale or not, according to the logarithm
行列式signature(x = "dsCMatrix", logarithm = "logical")：评估行列式x对数尺度上，或不按logarithm
t signature(x = "dsCMatrix"): Transpose. As for all symmetric matrices, a matrix for which the upper triangle is stored produces a matrix for which the lower triangle is stored and vice versa, i.e., the uplo slot is swapped, and the row
Tsignature(x = "dsCMatrix")：移调。为所有对称矩阵，存储上三角矩阵产生若对存储下三角矩阵，反之亦然，即uplo插槽交换，该行
t signature(x = "dsTMatrix"): Transpose. The uplo slot is swapped from "U" to "L" or vice
Tsignature(x = "dsTMatrix")：移调。从uplo"U"或副"L"槽交换
coerce signature(from = "dsCMatrix", to = "dgTMatrix")
强制signature(from = "dsCMatrix", to = "dgTMatrix")
coerce signature(from = "dsCMatrix", to = "dgeMatrix")
强制signature(from = "dsCMatrix", to = "dgeMatrix")
coerce signature(from = "dsCMatrix", to = "matrix")
强制signature(from = "dsCMatrix", to = "matrix")
coerce signature(from = "dsTMatrix", to = "dgeMatrix")
强制signature(from = "dsTMatrix", to = "dgeMatrix")
coerce signature(from = "dsTMatrix", to = "dsCMatrix")
强制signature(from = "dsTMatrix", to = "dsCMatrix")
coerce signature(from = "dsTMatrix", to = "dsyMatrix")
强制signature(from = "dsTMatrix", to = "dsyMatrix")
coerce signature(from = "dsTMatrix", to = "matrix")
强制signature(from = "dsTMatrix", to = "matrix")
参见----------See Also----------
Classes dgCMatrix, dgTMatrix, dgeMatrix and those mentioned above.
类dgCMatrix，dgTMatrix，dgeMatrix“的上述。
举例----------Examples----------
mm <- Matrix(toeplitz(c(10, 0, 1, 0, 3)), sparse = TRUE)
mm # automatically dsCMatrix[自动dsCMatrix]
str(mm)
## how would we go from a manually constructed Tsparse* :[从手工建造的Tsparse *＃我们将如何去：]
mT <- as(mm, "dgTMatrix")
## Either[＃无论]
(symM <- as(mT, "symmetricMatrix"))# dsT[dst的]
(symC <- as(symM, "CsparseMatrix"))# dsC[DSC]
## or[＃或]
sC <- Matrix(mT, sparse=TRUE, forceCheck=TRUE)
sym2 <- as(symC, "TsparseMatrix")
## --> the same as 'symM', a "dsTMatrix"[＃ - >“SYMM相同，”dsTMatrix“]
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。
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。
注3：如遇到不准确之处，请在本贴的后面进行回帖，我们会逐渐进行修订。
|
发表于 2012-2-17 10:25:29
