Achieving Compliance: OGC GML 3.2.1

Introduction

This article is a part of the outputs of the article OGC Compliant Formats with FME, which outlines the compliant OGC formats FME supports. 

Process Overview

Using INSPIRE Cadastral Parcels to output OGC GML

This workspace reads cadastral parcels from INSPIRE. Learn more about how FME simplifies the process of achieving EU INSPIRE compliance here.

Upon inspection, the OGC’s application schema had much more rigorous requirements than INSPIRE. The following changes were made with feedback from the initial test results in reference to the encoding document. 

1. Polygon Orientation 

Polygon orientations were set to be modified to the right-hand rule using the Orienter transformer. For details on surface types, refer to section 10.5.10 of the GML 3.2.1 encoding document.

2. Coordinate Reference System 

For best practice, the coordinate reference system was set to urn:ogc:def:crs:EPSG::4326 using the Reprojector to align with OGC standards and best practices. For details on CRS, refer to section 10.1.3.2 of the GML 3.2.1 encoding document.