Global Mapper 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.

Data in a workspace can be exported to GeoPackage format with File Menu > Export >Export GeoPackage...

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.

If a point symbol in a loaded GPKG was not present in GM prior to opening the GPKG, the point symbol will automatically be added to the user’s Custom Symbols (Configuration > Styles > Custom Symbols), thus enabling the user to create a custom Point Style within Global Mapper.

GeoPackage import and export supports custom SVG, JPG, and PNG point symbols.

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.

To append data to an existing Geopackage file, select the existing file when exporting. With this selection Global Mapper will open the existing file and add or replace the tables being exported.

Export GeoPackage

To export a GeoPackage, select File> Export> Export GeoPackage. The GeoPackage Export options dialog will appear.

• Tile Options
• Vector Options
• Export Bounds

Tile Options

Table Name

The name of the table in the GeoPackage where the tile pyramid data will be stored. This is required.

Description

An optional description of the data. This will be displayed in the layer metadata when it is imported into Global Mapper.

Export Each Raster Layer to a Separate Table

With this option checked, each raster layer will be exported to a different table and the option to automatically choose a good zoom level for each layer will be available.

Zoom Level Setup

Automatically choose a good zoom level for each layer

With the option to Export Each Raster Layer to a Separate Table enabled, this option allows Global Mapper to determine the most detailed zoom level for each layer based on the source data resolution.

Use the same zoom level for all layers

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

Format

The tiles can be stored in JPG or PNG data format. With JPG, the quality level (between 25 and 100) can also be specified.

Size

Choose the size in pixels for each tile.

Miscellaneous

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.

Vector Options

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.

Export Areas

Check this option to export area features, and type in the table name.

Export Lines

Check this option to export line features, and type in the table name.

Export Points

Check this option to export point features, and type in the table name.

Options

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.

Format Updates

Below is a summary of recent changes to format support: