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DuckDB 1.3 ドキュメント 全文検索
Results of 1 - 2 of about 2 for geom (0.003 sec.)
- Spatial Functions – DuckDB 11228
- This page is for DuckDB 1.3, which is outdated. Switch to the current version . Search Shortcut cmd + k | ctrl + k Installation Documentation Getting Started Connect Overview Concurrency Data Import Overview Data Sources CSV Files Overview
...of the PROJ library version that is being used by this instance of DuckDB. ST_Affine Applies an affine transformation to a geometry. ST_Area Compute the area of a geometry. ST_Area_Spheroid Returns the area of a geometry in meters, using an ellipsoid...al model of the earth ST_AsGeoJSON Returns the geometry as a GeoJSON fragment ST_AsHEXWKB Returns the geometry as a HEXWKB string ST_AsSVG Convert the geometry into a SVG fra...gment or path ST_AsText Returns the geometry as a WKT string ST_AsWKB Returns the geometry as a WKB (Well-Known-Binary) blob ST_Azimuth Returns the azimuth (a cloc... - https://man.mtool.work/duckdb/1.3/core_extensions/spatial/functions.html
- R-Tree Indexes – DuckDB 7485
- This page is for DuckDB 1.3, which is outdated. Switch to the current version . Search Shortcut cmd + k | ctrl + k Installation Documentation Getting Started Connect Overview Concurrency Data Import Overview Data Sources CSV Files Overview
...e Indexes Work? An R-tree is a balanced tree data structure that stores the approximate minimum bounding rectangle of each geometry (and the internal ID of the corresponding row) in the leaf nodes, and the bounding rectangle enclosing all of the chil...d nodes in each internal node. The minimum bounding rectangle (MBR) of a geometry is the smallest rectangle that completely encloses the geometry. Usually when we talk about the bounding rectangle of...a geometry (or the bounding "box" in the context of 2D geometry), we mean the minimum bounding rectangle. Additionally, we tend t... - https://man.mtool.work/duckdb/1.3/core_extensions/spatial/r-tree_indexes.html
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