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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.
30 June, 2021
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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.
30 June, 2021
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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
7 April, 2021
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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
18 January, 2021
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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.
6 December, 2020
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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
30 November, 2020
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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
25 November, 2020
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Space Filling Curve Functions For TSQL
Introduction Warning: This article is long mainly because it includes the source code of the Hilbert, Morton and Peano key/curves. I would assert that space
22 November, 2020
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Bing Maps Tile System Functions for TSQL
This blog presents functions for Bing Maps Tile System for TSQL. This support includes converting Latitude/Longitude pairs to Bing Maps QuadKeys. The source for the
19 November, 2020
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Experience With GIS Desktop Software
GIS Desktop Software is the bedrock of how most people experience Geographic Information Systems. A limited selection of such products are: ArcGIS Manifold MapInfo qGIS
19 November, 2020
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