Phase 2: Area Calculation Test

Test OpenLayers area calculation with credit system integration

✅ Phase 2 Implementation Complete

OpenLayers Area Calculation
Uses ol/sphere.getArea() for accurate geodesic calculations
Client-side File Processing
Parse GeoJSON/KML and extract geometry in browser
Credit Requirements
Show credit requirement before server upload
Real-time Validation
Validate geometry and show errors/warnings

Upload Farm Boundary Files

Upload GeoJSON or KML files to test area calculation

🧪 Test Instructions

1.Upload a GeoJSON or KML file with farm boundaries
2.Check that area is calculated automatically using OpenLayers
3.Verify credit requirements show before server upload
4.Test with different file sizes to see credit scaling
5.Verify insufficient credit warning when needed

📄 Sample GeoJSON

Copy this sample data to create a test file:

{
  "type": "Feature",
  "geometry": {
    "type": "Polygon",
    "coordinates": [[
      [-74.0059, 40.7128],
      [-74.0000, 40.7128],
      [-74.0000, 40.7200],
      [-74.0059, 40.7200],
      [-74.0059, 40.7128]
    ]]
  },
  "properties": {
    "name": "Sample Farm"
  }
}

Save as "sample-farm.geojson" and upload to test

🚀 Next: Phase 3

After verifying Phase 2 works correctly:

  • • Implement client-side file parsing (Shapefile support)
  • • Add batch file processing
  • • Enhance error handling and validation
  • • Add file format conversion utilities