What is the First Feature Defines Geometry Type option used for?

• A. To set the geometry type manually
• B. To define the geometry from a schema definition
• C. To define the geometry type based on the first feature the writer receives
• D. To override the geometry defined by the chosen schema source

Answer: (C)

This setting is about deciding the output geometry type on the fly when the destination expects a single type. First Feature Defines Geometry Type makes the writer wait until the first feature arrives, inspect its geometry, and then lock that geometry type as the one used for all remaining features. It’s useful when you don’t know the target type in advance or when the schema doesn’t fix the type until you see data. It’s especially handy for formats that require one geometry type per file. Once the first feature’s geometry type is established, all following features must match that type, or the write will fail. This behavior isn’t about manually setting the type, pulling it from a schema, or overriding a schema-defined type.