Group Entities By
Specifies the overall structure of the schema and data for GRD file reading. Group entities by layer name or geometry, or build GRD schema by scanning extended entity data.
Layer Name
The schema will be generated using layers in the source dataset as FME feature types.
Geometry
The schema will be generated using all the possible GRD geometry types as FME feature types. This list is set by the reader capability and is not limited to geometries which occur in the given source dataset.
Attribute Schema
The schema will be generated using both the layers and entities in the source dataset. The layers will be used to create FME feature types as in the Group by Layer Name selection; however, the attributes of all the entities belonging to a layer will be accumulated and also added to the FME feature type for that layer.
Blocks
Expand Into Entities
Select this parameter to explode blocks and return the entities that form the components of the block as separate features.
Schema Attributes
Additional Attributes to Expose
Use this parameter to expose Format Attributes in Workbench when you create a workspace:
- In a dynamic scenario, it means these attributes can be passed to the output dataset at runtime.
- In a non-dynamic scenario where you have multiple feature types, it is convenient to expose additional attributes from one parameter. For example, if you have ten feature types and want to expose the same attribute in each one, it is easier to define it once than it is to set each feature type individually in the workspace.
Use Search Envelope
Using the minimum and maximum x and y parameters, define a bounding box that will be used to filter the input features. Only features that intersect with the bounding box are returned.
If all four coordinates of the search envelope are specified as 0, the search envelope will be disabled.
Clip to Search Envelope
Select this parameter to remove any portions of exported features outside the area of interest.
The illustration below shows the results of the Search Envelope when Clip to Search Envelope is set to No on the left side and Yes on the right side.
- No: Any features that cross the search envelope boundary will be read, including the portion that lies outside of the boundary.
- Yes: Any features that cross the search envelope boundary will be clipped at the boundary, and only the portion that lies inside the boundary will be read. The underlying function for the Clip to Search Envelope function is an intersection; however, when Clip to Search Envelope is set to Yes, a clip is also performed in addition to the intersection.
