Global Mapper now supports import and export of OGC GeoPackage data sets. A GeoPackage is a SQLite database file that can contain one or more vector data tables, one or more tile pyramid* data sets, or both.
When importing a GeoPackage data set, all of the data will be imported into a Control Center group named after the input file, with each data set in its own layer. The name of the layer will be the same as the name of the table where the data is stored.
When exporting a GeoPackage data set, each loaded vector layer will be exported to its own data set in the GeoPackage. All of the loaded raster data will be exported to a single tile pyramid* data set.
Note: * GeoPackage tile pyramids can only contain images, not elevation data.
To export a GeoPackage, select File> Export> Export GeoPackage. The GeoPackage Export options dialog will appear.
The name of the table in the GeoPackage where the tile pyramid data will be stored. This is required.
An optional description of the data. This will be displayed in the layer metadata when it is imported into Global Mapper.
Zoom Level Setup
Similar to other tiled export formats such as Google Maps tiles, this defines the most detailed zoom level that will be included in the tile pyramid.
Number of Zoom Levels
Indicates how many zoom levels to export. For example, if zoom level 19 with 5 zoom levels is selected, the result is a tile pyramid containing zoom levels 19, 18, 17, 16, and 15.
Tile Image Options
The tiles can be stored in JPG or PNG data format. With JPG, the quality level (between 25 and 100) can also be specified.
Choose the size in pixels for each tile.
Skip existing tiles
This option skips tiles that have already been generated. This is good for continuing a GeoPackage export that was not completed where it was left off, by saving with the same name to the same location.
Skip empty tiles
Do not include tiles that contain no data.
Depending on the types of data that are currently loaded, there will be options to export area, line, and/or point tables. Note that the table name is required unless the Split Data by Feature Layer Name option is selected.
Check this option to export area features, and type in the table name.
Check this option to export line features, and type in the table name.
Check this option to export point features, and type in the table name.
Split Data by Feature Layer Name
If this is checked, the data will be exported into a separate table for each layer (still based on feature type). If this option is selected, it is not necessary to type a table name. The layer name will be used for the table name. If a table name is specified, it will be used as a prefix with the layer name.
Export 3D features
If this is selected, features will be exported with a Z value.
Below is a summary of recent changes to format support:
|18.2||Added support for importing GeoPackage 1.1 databases. [Item #21586]|
|18.0||Added support for importing and exporting OGC GeoPackage format files, including both vector data and tile pyramids [Item #13200]|