Dataset
Dataset
The value for this field is the path to the file to be read.
Constraints
Table List
After you have specified the database connection, click the Browse button to select tables for import. A connection window appears while the system compiles a table from the database.
Once the table list appears, you can select one or more tables, and then click OK to dismiss the window. The table name(s) will appear in the Table List field in the parameter box.
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, you can use this parameter to expose additional attributes on multiple feature types.
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
When selected, this parameter removes any portions of imported features being read that are outside the Search Envelope.
The example below illustrates the results of the Search Envelope when Clip to Search Envelope is not selected (set to No) and when it is selected (set to Yes).
- 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 selected, a clipping operation is also performed in addition to the intersection.
Advanced
Select logical zoom scale to use for appearances
GeoConcept maps allow objects to have different appearances at different levels of zoom. This parameter is used to determine which zoom level the reader should use to extract appearance information. In other words, if an object has a different appearance at zoom level 4 than at zoom level 5, setting this parameter to 4 will result in different appearance values than if it were set to 5.
It is not currently possible to capture all zoom level appearance values.
Note: Some zoom levels will have the appearance for certain objects set to invisible.
Only the integer values 1 to 12 are allowed.
Use each map subclass to determine appearance
This parameter provides a small performance increase on large datasets.
The default way to handle appearances is to extract the appearance values from each object. However, in GeoConcept it is quite common for all members of a class or class/subclass to have the same appearance settings. Setting this parameter to Yes tells the reader to only extract the appearance settings once – at the class/subclass level –rather than once for every object of that type.