Day: 22 July 2020

Today I decided to expose the Java Topology Suite’s (JTS) MinimumBoundingCircle functionality via the Spatial Companion For Oracle (SC4O) installer and package. The MinimumBoundingCircle PL/SQL wrappers I have created are: Here are some examples. Now let’s test and visualise some lines and circles. Which look like: 1. Line !http://www.spatialdbadvisor.com/images/134.png! 2. Rectangle !http://www.spatialdbadvisor.com/images/135.png! I hope thisRead More

I created a densify function within my GEOM package in pure PL/SQL many years ago. Today I decided to expose the Java Topology Suite’s (JTS) Densifier functionality via the Spatial Companion For oracle (SC4O) installer and package. The Densify PL/SQL wrappers I have created are: Here is an example using a 3 point line. WhichRead More

There is often a need to compare SDO_GEOMETRYs to see if a geometry has changed or not. The SDO_GEOM.RELATE function is useful in this regards where two geometries are EQUAL but it is not fine-grained enough to help understand how different two things are. The Java Topology Suite (JTS) has two very useful match algorithmsRead More

One way of providing an area and length capability for Oracle 10g that is free from licensing issues is to use Java Topology Suite’s (JTS) GetArea() and GetLength() functions. Being as I have already created the framework with the Spatial Companion For Oracle (SC4O) package and installer I have added access to JTS Area andRead More

My CENTROID package is very popular but people have to download the spatialdbadvisor_oracle_spatial_types_and_packages.zip package to get it. I have now created a standalone download for the CENTROID package. This is available from the Download Code, Packages and Installers link on the Source Code Documentation / Download on the main page. This package contains: CENTROID_package.sql CENTROID_package_test.sqlRead More