CityGML conversion to 3D Tiles - missing attributes

Cesium ion
1

Hi everyone,

I uploaded a CityGML file to Cesium Ion and I’m using the output 3D tiles in a CesiumJS application. However, I have noticed that many of the object attributes are missing when I try to select a specific building on the map viewer. Most importantly, the gml_id is missing, which is a big problem because I need this information to link to data in an external database.

I noticed that someone else already mentioned the same issue in this thread: Cesium Ion / Cesium JS Compatibility Problems - CesiumJS - Cesium Community

Do you have any tips on how I can remedy this?

Many thanks in advance for your help!

Ellie

2

Thanks for reporting this @ellieroy This definitely sounds like a problem on our end. Can you share the asset ID with us so that a developer can reproduce the problem (and hopefully fix it).

Thanks,

Matt

3

Hi Matt, thanks for your fast reply! The asset ID is 1636402.

4

Hi @Matt_Amato, I was wondering if you have a general idea of how long it would take for your developers to look into this issue (and potentially fix it)? I might need to start considering other options to get round this, but that depends on the time frame on your side.

5

I’ve managed to get round this issue by using FME to copy the gml_id to a new generic attribute defined for each building. Cesium Ion writes the generic attributes to the properties of each 3D tile feature.

6

@ellieroy Thanks for letting us know you have a workaround. We are now tracking this issue internally and will hopefully publish a full fix in the near future (but no concrete ETA at this time).

Thanks

8

Hello,

Yesterday we released an update to the CityGML tiler on ion and it now includes a gml:id property in the metadata of the 3D Tiles tileset for each building.

This improvement will also ship as part of our on-prem tilers later this month.

Thanks