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Fitting Bezier Polygon to Points
A colleague asked if I could implement the fitting of a 2D linestring to a set of points using a bezier approximation returning a polygon.
Fixing Geography Ring Orientation
This article demonstrates the effect wrong ring orientation has on the processing of a geography object and shows how to fix such orientation.
Removing Duplicate Vertices in SQL Server Spatial
This article shows how to remove duplicate vertices/point in SQL Server Spatial geometry objects.
Split Oracle Sdo_Geometry Linestring at a Known Point using SDO_LRS and PL/SQL (2)
This article shows how to construct a function that allows any linestring to be split by any point using a collection of SDO_LRS procedures and functions.
Split Oracle Sdo_Geometry Linestring at a Known Point using PL/SQL (1)
This article describes how to split a linestring or a multilinestring using PL/SQL at a known point.
GeoRaptor 18+: Downloading and Installing beta
Installing GeoRaptor for SQL Developer 18+ GeoRaptor is available as a full installable download from this site. Otherwise it can also be compiled from the
Oracle Spatial Vector Acceleration: Flick the Switch
Introduction A lot has been written, positive and negative, about the speed of Oracle Spatial over the years, a lot of ill informed (I mean
Linear Referencing System (LRS) Functions for TSQL
This articles logically steps through all the functions in a complete package of Linear Referencing functions that I have written for TSQL. The article both demonstrates the power of SQL Server Spatial but what can be done with TSQL.
CheckRadii: Identifying Tight Radius Curves sections within LineString geometry data
Sometimes it is a data quality requirement for linear data (roads, pipelines, transmission lines) that curves within the lines must have a radius greater than
Overlaying Polygons in SQL Server Spatial
Introduction The OGC operators for geometry processing only support two polygon inputs. Additionally the Microsoft aggregate operators only include geometry union processing geometry::UnionAggregate and not
Documentation
- MySQL Spatial General Functions
- Oracle LRS Objects
- Oracle Spatial Exporter (Java + pl/SQL)
- Oracle Spatial Object Functions
- Oracle Spatial Object Functions (Multi Page)
- PostGIS pl/pgSQL Functions
- SC4O Oracle Java Topology Suite (Java + pl/SQL)
- SQL Server Spatial General TSQL Functions
- SQL Server Spatial LRS TSQL Functions