Reprojector

From fmepedia

Reprojector is a Workbench Transformer.

The Reprojector reprojects data from one Coordinate System to another.

The Stroke Arcs and Ellipses option, which is set to yes by default, strokes these types of features. This is highly recommended, as a circle in one projection can have a very different shape in another. As only fixed vertices (i.e. actual points stored in the file) can be reprojected, a curve could end up looking very odd. By stroking (interpolating points along the curve), this can be avoided.

When using a Reprojector it is recommended to also set the source and target projections for the input- and output datasets.

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Q) How does the Reprojector know whether to reproject a feature?

A) If a feature tagged with a coordinate systems enters a Reprojector, the feature is first reprojected from its original coordinate system to the source coordinate system listed in the Reprojector. If the feature's tagged coordinate system was identical to the Reprojector source coordinate system, or the feature had no coordinate system, no work is done during this step.

Then the feature is reprojected from the source coordinate system to the destination coordinate system as specified in the Reprojector.