Conversion of the lower triangular matrix of a distance matrix into an array

Description

Auxiliary function to convert of the lower triangular matrix of a distance matrix into an array

Usage

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Arguments

distance

A distance matrix or a symmetric matrix

Value

Array resulting from the concatenation of the rows of the lower triangular matrix of the input symetric matrix. Array length is n*(n-1)/2, where n is the number of rows of the symetric matrix.

Examples

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## Generate some data
Data <- matrix(rnorm(300),ncol=10,nrow=30)

## Calculate distance matrix and transform its lower triangular matrix into a one 
## dimensional array
d <- f_distance2vector(as.matrix(dist(Data)))

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