Last data update: 2014.03.03
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R: Interface between Matrix class objects and weights lists
as_dgRMatrix_listw | R Documentation |
Interface between Matrix class objects and weights lists
Description
Interface between Matrix class objects and weights lists
Usage
as_dgRMatrix_listw(listw)
as_dsTMatrix_listw(listw)
as_dsCMatrix_I(n)
as_dsCMatrix_IrW(W, rho)
Jacobian_W(W, rho)
Arguments
listw |
a listw object created for example by nb2listw
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W |
a dsTMatrix object created using as_dsTMatrix_listw from a symmetric listw object
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rho |
spatial regression coefficient
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n |
length of diagonal for identity matrix
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Value
Matrix package class objects
Author(s)
Roger Bivand
Examples
example(NY_data)
W_C <- as(listw_NY, "CsparseMatrix")
W_R <- as(listw_NY, "RsparseMatrix")
W_S <- as(listw_NY, "symmetricMatrix")
n <- nrow(W_S)
I <- Diagonal(n)
rho <- 0.1
c(determinant(I - rho * W_S, logarithm=TRUE)$modulus)
sum(log(1 - rho * eigenw(listw_NY)))
nW <- - W_S
nChol <- Cholesky(nW, Imult=8)
n * log(rho) + (2 * c(determinant(update(nChol, nW, 1/rho))$modulus))
Results
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