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Writing Schema based GML with FME Sören Dupke Software Engineer

Introduction

!  Employed at con terra GmbH since 2010

!  Spatial ETL Professional Services

!  FME Certified Trainer since 2011

!  FME Certified Professional since 2013

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A few Words about GML

!  Why is it important for us !  What´s the difficulty

GIS <GML>

GML

!  OGC and ISO Standard !  XML Schema for the exchange of spatial data !  Rich set of primitives:

!  Features !  Geometry !  Coordinate reference system !  Time !  UoM

GML Application Schema

!  Describes the domain of interest >  e.g. : Transport, Hydrography…

!  Uses GML primitives >  Attributes, Geometry, …

!  Examples: >  AIXM, INSPIRE, NAS, CityGML

GML before 2014

Reading GML Writing GML

Reading GML in FME

!  GML Reader !  Predefined application

schemas !  Format specific

Writing Schema based GML

!  Import Feature Types from GML Schema

Demo Cadastral Parcels

Geometry Handling

!  Geometry name and GML element have to match !  Multiple geometries

supported

Demo Cadastral Parcels

Multiplicities

!  Lists

Demo Cadastral Parcels

Embedded FeatureTypes

!  gml_parent_id references back to parent

Experience from Projects

!  INSPIRE@BfN !  First project use of the new writer

!  INSPIRE Solution Pack 2.0 !  Uses GML writer !  Fast and flexible solution for creating INSPIRE GML

Thank You!

!  Questions?

!  For more information: !  Sören Dupke, s.dupke@conterra.de !  con terra GmbH

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