The SUMO toolbox  2018a
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Functions
buildDistanceMatrix.m File Reference

Functions

function buildDistanceMatrix (var samples, var targets, var doSqrt, var weights)
 Both `samples' and `targets' give an array of d-dimensional points. More...
 

Detailed Description

Authors
SUMO Lab Team
Version
2018a
Date
Copyright 2006-2018

This file is part of the Surrogate Modeling Toolbox ("SUMO Toolbox") and you can redistribute it and/or modify it under the terms of the GNU Affero General Public License version 3 as published by the Free Software Foundation. With the additional provision that a commercial license must be purchased if the SUMO Toolbox is used, modified, or extended in a commercial setting. For details see the included LICENSE.txt file. When referring to the SUMO Toolbox please make reference to the corresponding publication:

Contact : sumo@.nosp@m.sumo.nosp@m..inte.nosp@m.c.ug.nosp@m.ent.b.nosp@m.e - http://sumo.intec.ugent.be Signature distances = buildDistanceMatrix(samples, targets, doSqrt, weights)

Function Documentation

function buildDistanceMatrix ( var  samples,
var  targets,
var  doSqrt,
var  weights 
)

Both `samples' and `targets' give an array of d-dimensional points.

If `samples' is N x d and `targets' is M x d, then this function returns an N x M matrix, where the i,j element is the carthesian distance between samples_i and targets_j If `targets' is omitted or empty, it is assumed to be equal to `samples', in that case the returned matrix is square and symmetrical, and has zeros on its diagonal.

The parameter doSqrt indicates if the square root should be taken of the final matrix in order to get 'real' distances. Set to 0 to save time. Defaults to 1.

Example:

build_distance_matrix( [ 0 0 ; 1 1 ; 2 2 ], [ 1 0 ; 0 1 ] )

ans = 1.0000 1.0000 1.0000 1.0000 2.2361 2.2361