Keywords - Function groups - @ A B C D E F G H I J K L M N O P Q R S T U V W X Y Z

Library: xclust
See also: mat2vec distance lpdist agglom cor2dist

Quantlet: vec2mat
Description: stores the values of a vector into the upper triangle of a symmetric matrix regarding the sequence described in agglom

Usage: d = vec2mat(v)
Input:
v n(n-1)/2 x 1 matrix containing the values of the upper triangle of a symmetric matrix
Output:
d n x n symmetric matrix with zeros in the diagonal

Example:
; load the library xclust
library("xclust")
; generate vector
v = #(2, 3, 7, 1, 8, 5)
; apply vec2mat
vec2mat(v)

Result:
Content of object d

[1,]        0        2        3        7
[2,]        2        0        1        8
[3,]        3        1        0        5
[4,]        7        8        5        0



Author: H.-J. Mucha, S. Klinke, 19970902
(C) MD*TECH Method and Data Technologies, 05.02.2006