The import SQLite file commands convert SQLite/Spatialite DB
files into Carlson drawing entities. It is optionally write the
available attribute data to GIS Data Format which specified in GIS
Settings dialog, and the command create GIS links between the
drawing entities and the records in the database. If
SQLite/Spatial DB is selected as the GIS Data Format in the Drawing
Setup dialog, then the program will only create GIS links between
the drawing entities and the records in the database.
There are primarily three types of DB 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.
Import from SQLite dialog will list all available tables in the
DB File. The user can select import all tables or one of the tables
in the list. Then select corresponding fields for the Point
ID/Entity ID, Description, Elevation and Layer, etc. 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 Point
Desc, 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.
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