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Creating linestring geometries from a table of ordinates (Oracle)
Introduction (This article is about Oracle Spatial.) It is quite a common thing to have ordinates held as separate columns within a table as in
18 April, 2022
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How to calculate cumulative length of a linestring, or the truck tonnage that accumulates across a set of roads
This articles describes how to compute the cumulative length of a single linestring, or the total tonnage that crosses a set road segments.
22 March, 2022
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Visualising the Topological Relations of LineStrings
This post generates and visualizes all the topological relationships possible between two linestrings.
17 September, 2021
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Object Implementation of Oracle SDO_LRS
This article describes how to repackage the functionality in the SDO_LRS package via an PL/SQL object to provide a cleaner neater API.
5 July, 2021
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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: Direct Display of SDO_GEOMETRY / WKT text objects
This article shows how to use GeoRaptor’s Jump to Geometry functionality to conduct “one off” mapping of SDO_GEOMETRY and EWKT/WKT text objects. PostGIS is shown as a source for EWKT showing how to integrate development across multiple databases.
28 June, 2021
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Snapping a Point to an Oracle Spatial SDO_GEOMETRY LineString
This article shows how to snap a point to an Oracle Spatial linear geometry using the SDO_CLOSEST_POINTS procedure and function
26 June, 2021
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GeoRaptor
GeoRaptor: Layer Properties
This page describes all the elements of the layer properties dialog used to style spatial data in a GeoRaptor map view.
31 May, 2021
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GeoRaptor: Exporting GeoJSON and viewing in Tatuk GIS Viewer
This article shows how to export SDO_GEOMETRY data from Oracle to GeoJSON using GeoRaptor and SQL Developer with visualisation in the free Tatuk GIS Viewer.
26 May, 2021
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