Accuracy
Grid Resolution Comparison
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At maximum resolution: A5 & S2 have ~1cm cells, which can be used to represent real-world point data, while H3 has ~1m cells
H3 can only roughly represent the center circle, and fails to capture the number 5. A5 & S2 are very close to the source vector data.
Image: Open Imagery Network (CC-BY 4.0)