GetSubdiag: GetSubdiag

In parallelpam: Parallel Partitioning-Around-Medoids (PAM) for Big Sets of Data

GetSubdiag

Description

Takes a symmetric matrix and returns a vector with all its elements under the main diagonal (without those at the diagonal itself) Done as an instrumental function to check the PAM in package cluster. To be removed in final version of the package.

Usage

GetSubdiag(fname)

Arguments

fname

The name of the file with the dissimilarity matrix in jmatrix binary format.

Value

The vector with the values under the main diagonal, sorted by columns (i.e.: m(2,1) .. m(n,1), m(3,2)..m(n,2),..., m(n-1,n))

Examples

Rns <- matrix(runif(49),nrow=7)
Rsym <- 0.5*(Rns+t(Rns))
rownames(Rsym) <- c("A","B","C","D","E","F","G")
colnames(Rsym) <- c("a","b","c","d","e","f","g")
tmpfile1=paste0(tempdir(),"/Rsymfloat.bin")
JWriteBin(Rsym,tmpfile1,dtype="float",dmtype="symmetric")
d<-GetSubdiag(tmpfile1)
Rsym
d

parallelpam documentation built on Sept. 11, 2024, 6:11 p.m.