Re: [gdal-dev] Call for discussion for "RFC 41 : Support for multiple geometry fields in OGR"

2013-07-24 Thread Pirmin Kalberer
Am Mittwoch, 24. Juli 2013, 16.07:49 schrieb Andreas Neumann: > I can't comment about the technical issues. But from a user point of > view there is a need to have more than one geometry representation per > feature. There could be several generalizations attached to a feature, > or different state

[gdal-dev] GDAL WMS Reader projection info blank

2013-07-24 Thread Baker, Anthony W
I am reading through a WMS for raster data using GDALOpen with a GDALWMS xml file. The first pass of reading the file it picks up the projection information without an issue. On a later pass of doing a GDALOpen during the same process the projection information is blank. I think it may be som

Re: [gdal-dev] Call for discussion for "RFC 41 : Support for multiple geometry fields in OGR"

2013-07-24 Thread Even Rouault
Le mercredi 24 juillet 2013 18:42:59, Frank Warmerdam a écrit : > Even, > > An excellent proposal! > > I'm a bit sad about GetSpatialRef() on the first geometry field not > necessarily returning the right value for old drivers. I'd suggest we make > a quick pass through the checked in drivers on

Re: [gdal-dev] Call for discussion for "RFC 41 : Support for multiple geometry fields in OGR"

2013-07-24 Thread Frank Warmerdam
Even, An excellent proposal! I'm a bit sad about GetSpatialRef() on the first geometry field not necessarily returning the right value for old drivers. I'd suggest we make a quick pass through the checked in drivers once your core work is done to update them. I'd be interested in implementing m

Re: [gdal-dev] Call for discussion for "RFC 41 : Support for multiple geometry fields in OGR"

2013-07-24 Thread Even Rouault
Le mercredi 24 juillet 2013 16:07:49, Andreas Neumann a écrit : > Hi, > > I can't comment about the technical issues. But from a user point of > view there is a need to have more than one geometry representation per > feature. There could be several generalizations attached to a feature, > or diff

Re: [gdal-dev] Call for discussion for "RFC 41 : Support for multiple geometry fields in OGR"

2013-07-24 Thread Andreas Neumann
Hi, I can't comment about the technical issues. But from a user point of view there is a need to have more than one geometry representation per feature. There could be several generalizations attached to a feature, or different states. I would welcome such a feature in OGR. I guess Swisstopo als

Re: [gdal-dev] Call for discussion for "RFC 41 : Support for multiple geometry fields in OGR"

2013-07-24 Thread Howard Butler
On Jul 24, 2013, at 8:47 AM, Even Rouault wrote: > Too verbose maybe ;-) , since you probably missed the (discrete) mention to > the OLCCreateGeomField capability (at layer level since CreateGeomField() is > a > OGRLayer method) Indeed. Thanks for a thorough RFC. Now people can move on to arg

Re: [gdal-dev] How do I tell if an OGRSpatialReference has been initialized?

2013-07-24 Thread Even Rouault
Le mercredi 24 juillet 2013 15:43:11, David Strip a écrit : > I had considered validate(), but decided against it for the reason you > suggest - an initialized SRS might be in some weird format that fails > validation. I've been using exportToWkt(), but was/am concerned that it > might be possible

Re: [gdal-dev] Call for discussion for "RFC 41 : Support for multiple geometry fields in OGR"

2013-07-24 Thread Even Rouault
> Impressive, logical, complete, and verbose. > > The only small addition I might suggest is a driver capabilities flag to > announce whether or not it has multiple geometry field support. It could > simply be the driver that has not been updated to support multiple > geometry fields or the fact t

Re: [gdal-dev] How do I tell if an OGRSpatialReference has been initialized?

2013-07-24 Thread David Strip
I had considered validate(), but decided against it for the reason you suggest - an initialized SRS might be in some weird format that fails validation. I've been using exportToWkt(), but was/am concerned that it might be possible to fail to export in odd-ball situations. Hence, my question abo

Re: [gdal-dev] Call for discussion for "RFC 41 : Support for multiple geometry fields in OGR"

2013-07-24 Thread Howard Butler
On Jul 24, 2013, at 7:49 AM, Even Rouault wrote: > Hi, > > This is a call for discussion for "RFC 41 : Support for multiple geometry > fields in OGR" : > > http://trac.osgeo.org/gdal/wiki/rfc41_multiple_geometry_fields > > As an introduction, you'll find below the first paragraphs of the RFC

[gdal-dev] Call for discussion for "RFC 41 : Support for multiple geometry fields in OGR"

2013-07-24 Thread Even Rouault
Hi, This is a call for discussion for "RFC 41 : Support for multiple geometry fields in OGR" : http://trac.osgeo.org/gdal/wiki/rfc41_multiple_geometry_fields As an introduction, you'll find below the first paragraphs of the RFC. Much more to read at the above link ! == Summary == Add read/w