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iho-ohi / S-57-to-S-101-conversion-sub-WG

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Bridges #6

Open kusala9 opened 3 years ago

kusala9 commented 3 years ago

A placeholder issue for discussion on the automation of Bridge conversion between S-57 and S-101. Bridges are a potentially complex case as they combine some complicated feature transformations, attribution and association features.

This issue could usefully be progressed by looking at the features involved in current S-57 bridges, the modelling in the existing S-101 feature catalogue and also differences in geometry and attribution for the S-101 case.

tdepuyt commented 3 years ago

The image is from slide 4 on the attached PowerPoint pdf and identifies a particular scenario along with the supporting report on the converter from S-100WG1/S-101PT01 meeting. Unfortunately US5NJ14M no longer exists publicly due to NOAA's rescheming and the bridge construction since then has changed the underlaying conditions but this scenario still holds true for our conversion process. The data from our testing is also attached. US5NJ14M.zip

image

S101PT01-5.1 S-57 to S-101 Converter Update.pdf S101PT~1.PDF

kusala9 commented 3 years ago

Use multiple C_AGGR for each bridge? I guess the issue here is that S-101 bridges can share features (pylons) but each bridge aggregation should really relate to a single "bridge"? this is the kind of use case we need to look at. The other issue, I guess is also propagating attributes correctly - i.e ensuring the bridge aggregation has the correct attributes from the S-57 features.

Christian-Shom commented 2 years ago

I add a presentation that Friedhelm will make during the meeting on Monday 21 Feb. S-101Bridges_ul.pdf image