Simplified and Saved GeoDataFrame as GeoJSON

1 min read

📅 2023-05-19 — Session: Simplified and Saved GeoDataFrame as GeoJSON

🕒 14:10–15:10
🏷️ Labels: Geodataframe, Geojson, Python, Data Processing, Geospatial
📂 Project: Dev
⭐ Priority: MEDIUM

Session Goal

The session aimed to refine the process of simplifying GeoDataFrames and saving them as GeoJSON files, focusing on improving code efficiency and resolving errors.

Key Activities

  • Implemented a loop for simplifying GeoDataFrames with various tolerances and dynamically saving each as a GeoJSON file.
  • Rounded coordinates in GeoJSON files to enhance precision.
  • Addressed conversion issues from GeoSeries to GeoDataFrame for further modifications.
  • Corrected a lambda function for accurate GeoJSON conversion using shapely.geometry.
  • Updated code to eliminate unnecessary conversions and ensure proper rounding of coordinates.
  • Solved a Geometry object attribute error by updating the simplification process.
  • Simplified MultiPolygon geometries by rounding coordinates of entire geometries.
  • Provided a script for loading and simplifying multiple GeoDataFrames, saving results with specified tolerances.
  • Fixed a column name error in GeoPandas when saving GeoDataFrame to GeoJSON.

Achievements

  • Successfully simplified GeoDataFrames and saved them as GeoJSON files with improved precision and efficiency.
  • Resolved multiple errors related to geometry conversion and attribute handling.

Pending Tasks

  • Further optimization of the simplification process for large datasets may be explored in future sessions.

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