错误消息:协方差矩阵的LDL‘Bunch-Kaufman分解

Question

我是R矩阵的新手。我尝试用R-function BunchKaufman(x，...) http://stat.ethz.ch/R-manual/R-devel/library/Matrix/html/BunchKaufman-methods.html将奇异协方差矩阵分解成低密度脂蛋白的形式

请帮我跳过第一垒，尾随“函数错误...”

A <- matrix( c( 0.184, 0.228, 0.252, 0.022, -0.022, 0.228, 1.053, 0.142, 0.106, -0.106,
+ 0.252, 0.142, 0.382, 0.015, -0.015, 0.022, 0.106, 0.015, 0.055, -0.055, 
+ -0.022, -0.106, -0.015, -0.055, 0.055), ncol=5, nrow=5)
BunchKaufman(A)
Error in function (classes, fdef, mtable)  : 
  unable to find an inherited method for function ‘BunchKaufman’ for signature ‘"matrix"’

Answer 1

以下工作：

A <- forceSymmetric(A)

syA <- new("dsyMatrix"，A，Dim = as.integer(c(nrow(A)，nrow(A)，uplo = "L“)

BunchKaufman(syA)