FME can read and write files in the GML Simple Features Profile format.
GML is a complex specification declaring a wide number of XML elements for a wide variety of capabilities, including the ability to encode dynamic features, spatial and temporal topology, coverages, and complex geometric types.
The GML Simple Features Profile restricts the wide-scope of GML by specifying a useful subset of GML, supporting features and a limited set of linearly interpolated geometric types, it also simplifies the processing of the XML-Schema by defining strict XML-Schema usage/coding patterns.
The GML Simple Features Profile specifies three compliance levels:
- SF-0
- SF-1
- SF-2
Currently, only compliance level SF-0 is supported for writing.
Reader Overview
This reader supports GML documents conforming to the GML simple features profile.
Multi-value properties – that is, declared with a maxOccurs greater than 1 or unbounded, are supported, and are mapped into list attributes.
GML properties that are defined as complex types are supported – these complex properties are mapped as structured list attributes.
Writer Overview
This writer outputs GML documents conforming to the GML simple features profile. Two XML documents are written: a GML instance and its corresponding GML application schema. The feature types in the GML simple features application schema are controlled by the GMLSF writer’s feature type definitions.