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- 20964471.2024.2429847 type ScholarlyWork assertion.
- 20964471.2024.2429847 label "Using a discrete global grid system for land-use mapping" assertion.
- 20964471.2024.2429847 comment "This is the core principle explaining why DGGS improves computational performance. By representing space as discrete zones rather than continuous coordinates, spatial operations become simple ID comparisons rather than complex geometric intersections. This fundamental insight underpins all the performance benefits demonstrated in the paper's benchmarks." assertion.
- 20964471.2024.2429847 comment "Technical detail for implementing horizontal scaling with H3. This partitioning strategy enables predictable memory allocation and balanced workload distribution across compute nodes. The fixed partition size is key to achieving efficient parallel processing for large-scale geospatial classification tasks." assertion.
- 20964471.2024.2429847 comment "Key finding from the raster benchmarking experiment. While conceptually similar, the DGGS approach combined with modern data engineering tools (Parquet, Polars) provides measurable performance improvements even compared to optimized raster workflows. This suggests DGGS adoption can be justified on efficiency grounds alone." assertion.
- 20964471.2024.2429847 comment "Critical finding demonstrating the scalability limitations of traditional vector workflows. As land-use mapping tasks require more input layers, vector-based approaches become increasingly impractical. DGGS offers a solution by replacing expensive geometric unions with simple attribute joins on zone IDs." assertion.
- 20964471.2024.2429847 comment "Important practical advantage of DGGS over raster workflows. Land-use mapping often involves classifying based on text attributes (e.g., 'Recreation Reserve'), which is difficult with numeric-only raster formats. DGGS integration with databases like PostgreSQL enables full-text search capabilities that significantly improve classification flexibility." assertion.
- 20964471.2024.2429847 comment "The paper presents a case study of land-use classification for the Northland region of New Zealand. This region was chosen as the demonstration area for the DGGS-based land-use mapping approach, integrating 48 different geospatial layers using the H3 DGGS at resolution 13. Northland is located in the northern part of New Zealand's North Island, bounded approximately by 172.0-174.5°E longitude and 34.4-36.2°S latitude." assertion.
- 20964471.2024.2429847 obtainsBackgroundFrom 143141 assertion.
- 20964471.2024.2429847 usesMethodIn 152304003100011090 assertion.
- 20964471.2024.2429847 usesMethodIn 1900000024 assertion.
- 20964471.2024.2429847 cites 533452a assertion.
- 20964471.2024.2429847 cites j.apgeog.2010.11.006 assertion.
- 20964471.2024.2429847 cites j.isprsjprs.2020.02.009 assertion.
- 20964471.2024.2429847 cites 20964471.2021.2012912 assertion.
- 20964471.2024.2429847 cites 20964471.2022.2094926 assertion.
- 20964471.2024.2429847 cites cart.54.1.2018-0017 assertion.
- 20964471.2024.2429847 cites data4030094 assertion.
- 20964471.2024.2429847 P921 Q25303673 assertion.
- 20964471.2024.2429847 spatial northland-nz assertion.
- 20964471.2024.2429847 hasQuotedText "The discretisation of space ultimately allows for predictable and faster computes on congruent, aligned data" assertion.
- 20964471.2024.2429847 hasQuotedText "A parent offset of six would achieve partition sizes of a⁶ where a is the aperture of the DGGS, or how many child zones there are to each parent zone; this is 7 in the case of H3, making each partition 7⁶ = 117,649 zones" assertion.
- 20964471.2024.2429847 hasQuotedText "Classification of DGGS data is one order of magnitude faster than the raster method due to benefits accruing primarily to using a columnar data store (Apache Parquet) classified with a multi-threaded OLAP query engine (Polars)" assertion.
- 20964471.2024.2429847 hasQuotedText "In the vector method the most expensive component is the initial spatial join (union). This appears to exhibit a power relationship as the number of inputs increases" assertion.
- 20964471.2024.2429847 hasQuotedText "We found text search types to be extremely valuable, required no adjustment to the workflow, could be adapted flexibly, and, due to PostgreSQL's tsvector type, were already optimised" assertion.
- 20964471.2024.2429847 hasQuotedText "We applied these ideas when developing a land-use map for Northland, a region of New Zealand of 12,500 km² and 200,000 people" assertion.