adjacentMat | R Documentation |
Function that transforms a real matrix into an adjacency matrix. Intended use: Turn sparsified precision matrix into an adjacency matrix for undirected graphical representation.
adjacentMat(M, diag = FALSE)
M |
(Possibly sparsified precision) |
diag |
A |
Function returns an adjacency matrix
.
Carel F.W. Peeters <carel.peeters@wur.nl>, Wessel N. van Wieringen
ridgeP
, covML
, sparsify
,
edgeHeat
, Ugraph
## Obtain some (high-dimensional) data
p = 25
n = 10
set.seed(333)
X = matrix(rnorm(n*p), nrow = n, ncol = p)
colnames(X)[1:25] = letters[1:25]
Cx <- covML(X)
## Obtain regularized precision matrix
P <- ridgeP(Cx, lambda = 10, type = "Alt")
## Obtain sparsified partial correlation matrix
PC0 <- sparsify(P, threshold = "localFDR", FDRcut = .8)
## Obtain adjacency matrix
adjacentMat(PC0$sparsePrecision)
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