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controlledburn: Sparse Geometry Rasterization with Exact Coverage Fractions
Rasterize polygon, line, and point geometry without materializing any pixel values. For polygons it computes exact coverage fractions for polygon-grid intersections, returning sparse tables: run-length encoded interior cells and individually weighted boundary cells. The scanline algorithm is O(perimeter) in both time and memory, using the scan line fill attributed to Wylie et al. (1967) <doi:10.1145/1465611.1465619>. Exact coverage fractions use the exactextract algorithm by Daniel Baston, vendored from the 'exactextractr' package <doi:10.32614/CRAN.package.exactextractr>. Derived from the 'fasterize' package by Noam Ross.
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Package details |
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| Author | Michael Sumner [aut, cre] (ORCID: <https://orcid.org/0000-0002-2471-7511>), Noam Ross [aut] (ORCID: <https://orcid.org/0000-0002-2136-0000>), EcoHealth Alliance [cph] (Original fasterize scanline logic), Jim Hester [ctb] (Wrote CollectorList.h for early version), Daniel Baston [cph] (exactextract C++ algorithm (vendored)), ISciences, LLC [cph] (exactextract C++ algorithm (vendored)) |
| Maintainer | Michael Sumner <mdsumner@gmail.com> |
| License | Apache License (== 2.0) |
| Version | 0.3.2 |
| URL | https://hypertidy.github.io/controlledburn/ |
| Package repository | View on CRAN |
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