Re: OGC standards for 3d geometries?

Hi Bill,

If you want, I can tell you lots more about CityGML offline.

Linda

Op 24 okt. 2017 om 21:22 heeft Bill Roberts <bill@swirrl.com<mailto:bill@swirrl.com>> het volgende geschreven:

Thanks Scott! I'll take a look at those links. Much appreciated

Bill

On 24 Oct 2017, at 20:38, Scott Simmons <ssimmons@opengeospatial.org<mailto:ssimmons@opengeospatial.org>> wrote:

Hi Bill,

The most comprehensive standard for representing city data is CityGML (http://www.opengeospatial.org/standards/citygml and https://www.citygml.org/). The standard can represent all that you have described and can do so in different levels of detail, so everything from roofs or footprints to very detailed 3D models of everything in a building.

Best Regards,
Scott
On Oct 24, 2017, at 11:41 AM, Bill Roberts <bill@swirrl.com<mailto:bill@swirrl.com>> wrote:

Dear spatial data friends

Just thinking about some spatial data in a city context and looking for pointers to the recommended approach or state of the art for representing 3D geometries in the spectrum of OGC standards?  Presumably you can define a surface representing the 'top' of buildings, and another surface defining the 'ground'. What do you do if you want something more complex? Perhaps floors within a building, or surface, tunnels, flyovers etc?

Thanks in advance for any good links or advice

Best regards

Bill