Single dimension search

[Andrew Leung]

Hi,

I'm starting to explore libkdtree using test_kdtree.cpp. I have a decent 
grasp on how things are working in the triplet example, though I am a 
bit unclear about how I can query a 3-d tree in only a single dimension.

For example, test_kdtree.cpp creates triplets and searches the tree 
using other triplets as comparators. Is there a way I can search using 1 
or 2 of the triplet fields, not all three? Such as, find all triplets 
with a first dimension value of 5. Thanks for your help.

Andrew