There are primarily three types of GML files:
Points/Multipoint, LineStrings/MultiLineString and Polygons/
MultiPolygon. Each will provide different options on Import.
Once the GML file is selected, Carlson detects the data contents of
the file and sets the dialog options for importing either polygons,
linestring or points. LineStrings are brought into Carlson as open
polylines and Polygons are as closed polylines in the drawing.
If single file has been selected, then it would display Import from
GML dialog. This dialog will list all available features in the GML
File. The user can select import all features or one of the
features in the list. Then select corresponding fields for the
Point ID/Entity ID, Description, Elevation and Layer, etc. The
program uses the GML feature name as the table name in the data
source. The selected fields would be used to fill Carlson internal
fields. If no field is selected for Point ID/Entity ID, then the
program will create an unique ID for each entity. If no field is
selected for Description, then the description will leave blank. If
no field is selected for Layer, then the table name will be used as
layer name. If the feature type is Point/MultiPoint, then it will
allow user to select a name for the CRDB. The program then will
also output points geometry and GIS Data to CRDB.
If multiple files have been selected, then it
will not prompt for importing setting. It will automatically
create an unique ID for each entity and use the feature name as the
default layer name.