dsyMatrix-class(Matrix)
dsyMatrix-class()所属R语言包：Matrix
Symmetric Dense Numeric Matrices
对称致密数字矩阵的
译者：生物统计家园网 机器人LoveR
描述----------Description----------
The "dsyMatrix" class is the class of symmetric, dense matrices in non-packed storage and "dspMatrix" is the class of symmetric dense matrices in packed storage. Only the upper triangle or the lower triangle is stored.
"dsyMatrix"类是对称的，在非包装储存和"dspMatrix"是在包装存储密集对称矩阵类。密集矩阵类只存储上三角或下三角。
类的对象----------Objects from the Class----------
Objects can be created by calls of the form new("dsyMatrix", ...).
创建对象可以通过电话的形式new("dsyMatrix", ...)。
插槽----------Slots----------
uplo: Object of class "character". Must be
uplo类"character"的对象。必须
x: Object of class "numeric". The numeric
x类"numeric"的对象。数字
Dim,Dimnames: The dimension (a length-2 "integer") and corresponding names (or NULL), see the
Dim，Dimnames：尺寸（长度-2"integer"）和（或NULL），看到相应的名称
factors: Object of class "list". A named
factors类"list"的对象。命名
延伸----------Extends----------
"dsyMatrix" extends class "dgeMatrix", directly, whereas<br> "dspMatrix" extends class "ddenseMatrix", directly.
"dsyMatrix"类"dgeMatrix"，直接，而参考"dspMatrix"扩展类"ddenseMatrix"，直接延伸。
Both extend class "symmetricMatrix", directly, and class "Matrix" and others, indirectly, use showClass("dsyMatrix"), e.g., for details.
"symmetricMatrix"，直接和类都扩展类"Matrix"和其他人，间接使用showClass("dsyMatrix")，例如，有关详情。
方法----------Methods----------
coerce signature(from = "ddenseMatrix", to = "dgeMatrix")
强制signature(from = "ddenseMatrix", to = "dgeMatrix")
coerce signature(from = "dspMatrix", to = "matrix")
强制signature(from = "dspMatrix", to = "matrix")
coerce signature(from = "dsyMatrix", to = "matrix")
强制signature(from = "dsyMatrix", to = "matrix")
coerce signature(from = "dsyMatrix", to = "dspMatrix")
强制signature(from = "dsyMatrix", to = "dspMatrix")
coerce signature(from = "dspMatrix", to = "dsyMatrix")
强制signature(from = "dspMatrix", to = "dsyMatrix")
norm signature(x = "dspMatrix", type = "character")
规范signature(x = "dspMatrix", type = "character")
norm signature(x = "dsyMatrix", type = "character")
规范signature(x = "dsyMatrix", type = "character")
norm signature(x = "dspMatrix", type = "missing")
规范signature(x = "dspMatrix", type = "missing")
norm signature(x = "dsyMatrix", type = "missing")
规范signature(x = "dsyMatrix", type = "missing")
solve signature(a = "dspMatrix", b = "missing")
解决signature(a = "dspMatrix", b = "missing")
solve signature(a = "dsyMatrix", b = "missing")
解决signature(a = "dsyMatrix", b = "missing")
solve signature(a = "dspMatrix", b = "matrix")
解决signature(a = "dspMatrix", b = "matrix")
solve signature(a = "dsyMatrix", b = "matrix")
解决signature(a = "dsyMatrix", b = "matrix")
t signature(x = "dsyMatrix"): Transpose; swaps from upper triangular to lower triangular storage, i.e., the uplo slot from "U" to "L" or vice versa, the same as for all
Tsignature(x = "dsyMatrix")：移调;从上三角三角存储，即uplo槽以降低从"U""L"或反之亦然，为所有相同互换
参见----------See Also----------
Classes dgeMatrix and Matrix; solve, norm, rcond, t
类dgeMatrix和Matrix;solve，norm，rcond，t
举例----------Examples----------
## Only upper triangular part matters (when uplo == "U" as per default)[＃只有上三角部分事项（uplo ==为默认的“U”型）]
(sy2 <- new("dsyMatrix", Dim = as.integer(c(2,2)), x = c(14, NA,32,77)))
str(t(sy2)) # uplo = "L", and the lower tri. (i.e. NA is replaced).[uplo =“L”和三低。 （即不适用被替换）。]
chol(sy2) #-> "Cholesky" matrix[ - >“的Cholesky”矩阵]
## Coercing to dpoMatrix gives invalid object:[＃胁迫到dpoMatrix使无效的对象：]
sy3 <- new("dsyMatrix", Dim = as.integer(c(2,2)), x = c(14, -1, 2, -7))
try(as(sy3, "dpoMatrix")) # -> error: not positive definite[ - >错误：不正定]
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注：
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发表于 2012-2-16 18:59:44
