# [geos-devel] Indexing question from a newbie

Martin Davis mbdavis at VividSolutions.com
Fri Jul 7 18:00:37 EDT 2006

```Oh, I see what you mean.  Yes, points are supported.

Martin Davis, Senior Technical Architect
Vivid Solutions Inc.      www.vividsolutions.com
Suite #1A-2328 Government Street Victoria, B.C. V8T 5G5
Phone: (250) 385 6040 - Local 308 Fax: (250) 385 6046

-----Original Message-----
From: geos-devel-bounces at geos.refractions.net
[mailto:geos-devel-bounces at geos.refractions.net] On Behalf Of Sudipta
Sarkar
Sent: July 7, 2006 11:35 AM
To: GEOS Development List
Subject: Re: [geos-devel] Indexing question from a newbie

But Martin even with 2D geometry can we construct quad tree and
strtree indices for point geometries?

Martin Davis wrote:

Nope - the indexes are 2D only.

Martin Davis, Senior Technical Architect
Vivid Solutions Inc.      www.vividsolutions.com
Suite #1A-2328 Government Street Victoria, B.C. V8T 5G5
Phone: (250) 385 6040 - Local 308 Fax: (250) 385 6046

-----Original Message-----
From: geos-devel-bounces at geos.refractions.net
[mailto:geos-devel-bounces at geos.refractions.net]
On Behalf Of
Sudipta Sarkar
Sent: July 7, 2006 11:21 AM
To: GEOS Development List
Subject: Re: [geos-devel] Indexing question from
a newbie

Guys,
One more question is, is it at all possible to
strtree indices based on 3D point geometries? It
seems you have  to
supply the envelope of a geometry to the
constructor function of both
the indices but can you construct envelopes of
points?

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