how to use sqrt

[Paul Harris]

Did you find your answer?

These days I suggest you use flann or nanoflann as a kdtree library,

For your distance question, kdtrees operate on each dimension
independently, so Manhattan distance is the natural distance measurement.

I forget if there is something you can change to use euclidean distance,
but it may be better to simply calculate that distance manually once the
results have been returned.

Cheers,
Paul
On 30 Sep 2014 05:49, "Gao Neal" <gaoning777 at gmail.com> wrote:

> Hi,
> I found libkdtree a few days ago and found out that the default distance
> is manhattan distance but I need sqrt distance.
> Anyone had any clue to how to do this?
> Thanks
> Ning
>
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