Details
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New Feature
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Status: In Testing (View Workflow)
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Major
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Resolution: Unresolved
Description
The GIS function ST_Simplify takes ad input a geometry (g) and a double (max_distance). It applies the Ramer–Douglas–Peucker algorithm on g and returns the resulting geometry.
The goal of the Douglas-Peucker algorithm is to find a geometry that is similar to g but uses only a subset of points. To perform the simplification, all the vertexes that are shorter than max_distance are removed.
The algorithm may produce self-intersections and therefore result in invalid geometries.
If the max_distance is not positive or is NULL, an ER_WRONG_ARGUMENT will occur.
Attachments
Issue Links
- causes
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MDEV-34969 test fail main.spatial_utility_function_simplify (aarch64 and ppc64le)
- In Testing
- is part of
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MDEV-17398 Implement Geographic functions available in MySQL 8.0
- Stalled
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MDEV-34120 GSoC 2024, Spatial (GIS) functions in MariaDB
- In Testing