Coordinate transformations for FDO

[STEPHEN STANTON]

I'm new to FDO (and the OSGeo stack in general), looking for some advice.

I'm using FDO to grab some data from a variety of WFS servers. Now I want to do various spatial joins (overlays), so I need to ensure the various datasets are all in the same coordinate system.

From what I've read, it seems that FDO itself doesn't handle coordinate conversions. So I've been looking at using GDAL/OGR code to do the conversion. However, I'm reluctant to spend too much time on this, because it seems like I must be re-inventing the wheel.

Can anyone point me towards some coordinate transformation software that's been crafted to work with FDO geometry objects? Ideally in C# or C++.

Steve Stanton


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[Jackie Ng]

You can use MapGuide's MgCoordinateSystem API (which wraps the CS-Map coordinate system transformation library) to do this. I believe this component of the MapGuide API can be used standalone.

- Jackie

STEPHEN STANTON wrote:

I'm new to FDO (and the OSGeo stack in general), looking for some advice.

I'm using FDO to grab some data from a variety of WFS servers. Now I want to do various spatial joins (overlays), so I need to ensure the various datasets are all in the same coordinate system.

From what I've read, it seems that FDO itself doesn't handle coordinate conversions. So I've been looking at using GDAL/OGR code to do the conversion. However, I'm reluctant to spend too much time on this, because it seems like I must be re-inventing the wheel.

Can anyone point me towards some coordinate transformation software that's been crafted to work with FDO geometry objects? Ideally in C# or C++.

Steve Stanton


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fdo-users mailing list
[e-mail]
http://lists.osgeo.org/mailman/listinfo/fdo-users

[Greg Boone]

Take a look at the MapGuide OS code base:

Coordinate System Package: http://trac.osgeo.org/mapguide/browser/trunk/MgDev/Common/CoordinateSystem
Geometry Package: http://trac.osgeo.org/mapguide/browser/trunk/MgDev/Common/Geometry

You can access through SVN at: http://svn.osgeo.org/mapguide/trunk/MgDev

Greg


-----Original Message-----
From: [hidden email] [mailto:[hidden email]] On Behalf Of STEPHEN STANTON
Sent: Thursday, September 10, 2009 5:23 PM
To: [hidden email]
Subject: [fdo-users] Coordinate transformations for FDO

I'm new to FDO (and the OSGeo stack in general), looking for some advice.

I'm using FDO to grab some data from a variety of WFS servers. Now I want to do various spatial joins (overlays), so I need to ensure the various datasets are all in the same coordinate system.

From what I've read, it seems that FDO itself doesn't handle coordinate conversions. So I've been looking at using GDAL/OGR code to do the conversion. However, I'm reluctant to spend too much time on this, because it seems like I must be re-inventing the wheel.

Can anyone point me towards some coordinate transformation software that's been crafted to work with FDO geometry objects? Ideally in C# or C++.

Steve Stanton


_______________________________________________
fdo-users mailing list
[hidden email]
http://lists.osgeo.org/mailman/listinfo/fdo-users

_______________________________________________
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[Gavin Cramer]

There is also a tool in the FdoSpatial package called FdoSpatialGeometryConverter.  It is a dummy implementation that calls an ordinate converter (that the developer supplies, such as by invoking a coordinate transformer) on all positions in FDO geometry types.

The FDO code is in http://svn.osgeo.org/fdo/trunk/Fdo, and the FdoSpatial header file of interest is http://svn.osgeo.org/fdo/trunk/Fdo/Unmanaged/Inc/Spatial/SpatialGeometryConverter.h .

Gavin


-----Original Message-----
From: [hidden email] [mailto:[hidden email]] On Behalf Of Greg Boone
Sent: Monday, September 14, 2009 10:55 AM
To: FDO Users Mail List
Subject: RE: [fdo-users] Coordinate transformations for FDO

Take a look at the MapGuide OS code base:

Coordinate System Package: http://trac.osgeo.org/mapguide/browser/trunk/MgDev/Common/CoordinateSystem
Geometry Package: http://trac.osgeo.org/mapguide/browser/trunk/MgDev/Common/Geometry

You can access through SVN at: http://svn.osgeo.org/mapguide/trunk/MgDev

Greg


-----Original Message-----
From: [hidden email] [mailto:[hidden email]] On Behalf Of STEPHEN STANTON
Sent: Thursday, September 10, 2009 5:23 PM
To: [hidden email]
Subject: [fdo-users] Coordinate transformations for FDO

I'm new to FDO (and the OSGeo stack in general), looking for some advice.

I'm using FDO to grab some data from a variety of WFS servers. Now I want to do various spatial joins (overlays), so I need to ensure the various datasets are all in the same coordinate system.

From what I've read, it seems that FDO itself doesn't handle coordinate conversions. So I've been looking at using GDAL/OGR code to do the conversion. However, I'm reluctant to spend too much time on this, because it seems like I must be re-inventing the wheel.

Can anyone point me towards some coordinate transformation software that's been crafted to work with FDO geometry objects? Ideally in C# or C++.

Steve Stanton


_______________________________________________
fdo-users mailing list
[hidden email]
http://lists.osgeo.org/mailman/listinfo/fdo-users

_______________________________________________
fdo-users mailing list
[hidden email]
http://lists.osgeo.org/mailman/listinfo/fdo-users