README.md

deutschlandGeoJSON

Administrative borders of Germany in GeoJSON format in different quality levels.

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The frightening lack of reasonable geo-coordinates of Germany (including states, districts, and counties) in the practical GeoJSON format should be resolved by this repository. As you can see from the screenshots, you can achieve very good results even with reduced quality levels.

Credits

• Data source: GIS-DATA
• Implemented with Quantum GIS, following this tutorial.

Translations

• German

Germany

Quality levels

very high

high

• simplify tolerance: 0.0005
• points: reduced from 84,143 to 16,086 (80.88 % less)
• file size: reduced from 3.6 MB to 698 KB (80.61 % less)

medium

• simplify tolerance: 0.005
• points: reduced from 84,143 to 2,660 (96.84 % less)
• file size: reduced from 3.6 MB to 116 KB (96.78 % less)

low

• simplify tolerance: 0.02
• points: reduced from 84,143 to 758 (99.1 % less)
• file size: reduced from 3.6 MB to 23 KB (99.36 % less)

Federal States

Quality levels

very high

high

• simplify tolerance: 0.0005
• points: reduced from 100,842 to 32,085 (68.18 % less)
• file size: reduced from 4.4 MB to 1.4 MB (68.18 % less)

medium

• simplify tolerance: 0.005
• points: reduced from 100,842 to 8,775 (91.3 % less)
• file size: reduced from 4.4 MB to 385 KB (91.25 % less)

low

• simplify tolerance: 0.01
• points: reduced from 100,842 to 4,481 (95.56 % less)
• file size: reduced from 4.4 MB to 101 KB (97.71 % less)

Government Districts

Quality levels

very high

high

• simplify tolerance: 0.0005
• points: reduced from 114,777 to 45,827 (60.07 % less)
• file size: reduced from 5 MB to 2 MB (60 % less)

medium

• simplify tolerance: 0.005
• points: reduced from 114,777 to 14,047 (87.76 % less)
• file size: reduced from 5 MB to 623 KB (87.54 % less)

low

• simplify tolerance: 0.01
• points: reduced from 114,777 to 7,344 (93.6 % less)
• file size: reduced from 5 MB to 333 KB (93.34 % less)

Counties

Quality levels

very high

high

• simplify tolerance: 0.0005
• points: reduced from 183,345 to 113,565 (38.06 % less)
• file size: reduced from 8.1 MB to 5.1 MB (37.03 % less)

medium

• simplify tolerance: 0.005
• points: reduced from 183,345 to 40,433 (77.95 % less)
• file size: reduced from 8.1 MB to 1.9 MB (76.54 % less)

low

• simplify tolerance: 0.009
• points: reduced from 183,345 to 22,612 (87.67 % less)
• file size: reduced from 8.1 MB to 1.1 MB (86.42 % less)