added ChatGPT generated ATTRIBUTION.md and added a filelist for the DGMs

ATTRIBUTION.md

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+```md
+# Attribution
+
+This repository contains code, documentation, and (optionally) processed geodata for an academic digital twin / flood-visualization prototype of the city of Trier (Germany).
+
+Please keep this file with any redistribution of the repository or any exported builds that include the referenced datasets.
+
+---
+
+## Primary geodata sources
+
+### Landesamt für Vermessung und Geobasisinformation Rheinland-Pfalz (LVermGeo RLP)
+**Data used (depending on project configuration):**
+- Digitales Geländemodell (DGM) / DGM1 (GeoTIFF)
+- Digitale Orthophotos (DOP), e.g. DOP20
+- 3D-Gebäudemodelle (CityGML, LOD1/LOD2)
+
+**Provider:** Landesamt für Vermessung und Geobasisinformation Rheinland-Pfalz (LVermGeo RLP)  
+**License:** Datenlizenz Deutschland – Namensnennung – Version 2.0 (dl-de/by-2-0)  
+**Attribution:** © LVermGeo Rheinland-Pfalz (dl-de/by-2-0)  
+**Accessed:** YYYY-MM-DD (fill in)
+
+Notes:
+- The repository may include derived products (e.g., heightmaps, texture tiles, meshes) generated from LVermGeo datasets. These derivatives remain subject to the original attribution requirements.
+
+---
+
+## Optional / supplemental sources
+
+### OpenStreetMap
+**Data used (optional):**
+- Building footprints and tags (heights/levels where available)
+- Roads, rivers, landuse, points of interest
+
+**Provider:** OpenStreetMap contributors  
+**License:** Open Database License (ODbL)  
+**Attribution:** © OpenStreetMap contributors (ODbL)  
+**Accessed:** YYYY-MM-DD (fill in)
+
+Notes:
+- If you redistribute derived databases or extracts in a way that triggers ODbL share-alike requirements, ensure compliance with ODbL terms (including attribution and, where applicable, sharing derivative databases under ODbL).
+
+---
+
+## Hydrology / water level data (optional)
+
+### PEGELONLINE (WSV)
+**Data used (optional):**
+- River gauge measurements (water levels), accessed via PEGELONLINE API
+
+**Provider:** Wasserstraßen- und Schifffahrtsverwaltung des Bundes (WSV), PEGELONLINE  
+**Attribution:** Data source: PEGELONLINE (WSV)  
+**Accessed:** YYYY-MM-DD (fill in)
+
+Notes:
+- Ensure you follow PEGELONLINE’s published terms and attribution requirements for your specific usage and redistribution context.
+
+---
+
+## Project authorship (this repository)
+All original code, scripts, and documentation authored by the project team are licensed under the repository’s main license (see `LICENSE`), unless stated otherwise in-file.
+
+---
+
+## How to update this file
+When adding new datasets or services, add:
+1) Dataset/service name  
+2) Provider  
+3) License name/version  
+4) Required attribution text  
+5) Date accessed
+```
+

DGM/objectlist.csv

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+3285511,3295511,3295512,3285512,3285513,3295513,3285514,3295514,3285515,3295515