[Geoserver-users] WFS getFeature 3D data to shapefile format

GeoServer GeoServer User
1

Hello all,
I am using the WFS getFeature request to my install of GeoServer (1.7.5),
setting the output type to shapefile and all works fine with 2 dimensional
data. However, our 3D data looses the z-axis information. I suspect that
this was simply not implemented.

My question is, has this been a proposed enhancement (creating 3D shapefiles
from 3D data)? Is there someone out there working on this?

Thanks for the feedback,
Peter
p.s. our data source is Oracle 10g spatial.
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2

3d shapefile actually has not been a proposed enhancement, but does make sense.

We recently started down the path of some 3d support, see https://jira.codehaus.org/browse/GEOT-2537
http://docs.codehaus.org/display/GEOTOOLS/Partial+3D+data+support
http://jira.codehaus.org/browse/GEOS-2645

Improvements were made to do 3d KML from PostGIS. I believe that reading 3d Oracle and Shapefile were not included, nor was output as 3d GML or 3d shapefiles. Those are all awaiting further funding or volunteer coding time. If you're able to provide either we can definitely find someone to help out.

best regards,

Chris

GeoSpidey wrote:

Hello all,
I am using the WFS getFeature request to my install of GeoServer (1.7.5),
setting the output type to shapefile and all works fine with 2 dimensional
data. However, our 3D data looses the z-axis information. I suspect that
this was simply not implemented.

My question is, has this been a proposed enhancement (creating 3D shapefiles
from 3D data)? Is there someone out there working on this?

Thanks for the feedback,
Peter
p.s. our data source is Oracle 10g spatial.

--
Chris Holmes
OpenGeo - http://opengeo.org
Expert service straight from the developers.

3

Thanks for the information Chris. Although 3D data is not on the
forefront of everybody's mind at the moment (here at the State of
Alaska) I am sure it will be relatively soon. We currently only have a
few 3D datasets but for those users that want the z-axis data, we can't
get it to them easily at this point.

With that said, I would be happy to volunteer coding time to that end.

Peter

-----Original Message-----
From: Chris Holmes [mailto:cholmes@anonymised.com]
Sent: Tuesday, July 21, 2009 10:47 AM
To: Parker, Peter R (DNR)
Cc: geoserver-users@lists.sourceforge.net
Subject: Re: [Geoserver-users] WFS getFeature 3D data to shapefile
format

3d shapefile actually has not been a proposed enhancement, but does make

sense.

We recently started down the path of some 3d support, see
https://jira.codehaus.org/browse/GEOT-2537
http://docs.codehaus.org/display/GEOTOOLS/Partial+3D+data+support
http://jira.codehaus.org/browse/GEOS-2645

Improvements were made to do 3d KML from PostGIS. I believe that
reading 3d Oracle and Shapefile were not included, nor was output as 3d
GML or 3d shapefiles. Those are all awaiting further funding or
volunteer coding time. If you're able to provide either we can
definitely find someone to help out.

best regards,

Chris

GeoSpidey wrote:

Hello all,
I am using the WFS getFeature request to my install of GeoServer

(1.7.5),

setting the output type to shapefile and all works fine with 2

dimensional

data. However, our 3D data looses the z-axis information. I suspect

that

this was simply not implemented.

My question is, has this been a proposed enhancement (creating 3D

shapefiles

from 3D data)? Is there someone out there working on this?

Thanks for the feedback,
Peter
p.s. our data source is Oracle 10g spatial.

--
Chris Holmes
OpenGeo - http://opengeo.org
Expert service straight from the developers.

4

Parker, Peter R (DNR) ha scritto:

Thanks for the information Chris. Although 3D data is not on the
forefront of everybody's mind at the moment (here at the State of
Alaska) I am sure it will be relatively soon. We currently only have a
few 3D datasets but for those users that want the z-axis data, we can't
get it to them easily at this point.

With that said, I would be happy to volunteer coding time to that end.

As a first step, try out the latest of the GeoServer builds and the
latest datastores (e.g., if you're on Oracle, use Oracle NG) from
the nightly builds:
http://gridlock.openplans.org/geoserver/1.7.x/

Here we have a transformation chain, with a datastore reading the
data (e.g., postgis, oracle), and a datastore writing it out
(shapefile in this case). All of the elements must be 3d enabled,
and as far as I know, the path from postgis to shapefile should
be full 3d, minus bugs (never actually tried it).

So, if the nightly still insist on not giving you back 3d data,
I'd suggest you put breakpoints in the GeoServer ShapeZipOutputFormat
class, and see if the features coming in are 3d, if they are, the
issue is in the output, if not, you have to look into the input
datastore first.
The datastores are not part of GeoServer, but of the GeoTools library.
Each project has a relatively steep setup curve, but there are
developer guides for each with step by step instructions on how to
setup the developer enviroment.

If you're working on GeoServer 1.7.x you'll have to checkout the
GeoServer 1.7.x branch and the GeoTools 2.5.x branch, otherwise
you can use trunk of both (if you're targetting GeoServer 2.0.x).

Hope this helps

Cheers
Andrea

--
Andrea Aime
OpenGeo - http://opengeo.org
Custom development for your GeoServer needs