get2dFrom1d {dissimilarities} | R Documentation |
1D-indexing to 2D-indexing
Description
Efficiently computes 2D-indexing from 1D-indexing
Usage
get2dFrom1d(idx1d, N)
Arguments
idx1d |
An integer vector of 1D indexes |
N |
The number of observations in the original data matrix |
Details
Converts 1D indexing (as used in R's "dist" objects) into 2D indexing (row-column pairs)
for a distance matrix of size N \times N
.
Currently, name-based indexing is not supported."
Value
An integer matrix storing the corresponding 2D indexes.
Author(s)
Minh Long Nguyen edelweiss611428@gmail.com
Examples
get2dFrom1d(1:10, 5)
[Package dissimilarities version 0.3.0 Index]