I have a public web interface that is inteneded to allow users to extract shapefile data from Oracle SDE via GP key in. I have published parameters and created the interface but I dont know what transformers to use in the workbench to allow the GP clipping. Something about attribute filer I suspect.
If you need to filter features using a geometry specified by user, consider using the SpatialFilter or Clipper. Or else, the BoundsExtractor can be used to get the coordinates of corners of a bounding box surrounding a geometry, the BoundingBoxReplacer or BoundingBoxAccumulator can be used to create a bounding box area.
You have a choice depending on what you want to do.
you could accomplish this with a Creator followed by a couple of 2DPointAdders and a LineCloser based on the Lat/Lon published parameters to build the clipping polygon, which you then pass on the the Clipper.
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