The Export Global Mapper Package File command allows the user to export any or all of the loaded data to a Global Mapper package file. These files are similar to workspace files except that the actual data is stored in the files. Package files provide an easy way to pass around lots of data between Global Mapper users on different computers with a single self-contained file.
When selected, the command displays the Global Mapper Package Export Options dialog which allows the user to setup the package export. The dialog consists of a Package Options panel, a Simplification panel, a Gridding panel, and an Export Bounds panel.
The Package Options panel consists of options allowing the user to select the projection to save the data in, how to handle online streamed data, and other options. These include the Always Maintain Feature Styles option, which specifies that any vector features stored in the package file should explicitly save the styling of that feature, even if they are using the default style for the feature classification. This can make it easier to maintain exact styling when transferring packages between Global Mapper installations.
In the Projection section of the panel, the user can choose to save all loaded data in the currently selected view projection (this is the projection selected on the Projection tab of the Configuration dialog), in latitude/longitude coordinates (the "Geographic" projection) with the WGS84 datum, or to keep each layer in its original native projection.
In the Online Layer Export Options section of the panel, select how layers loaded from the Download Online Imagery/Topo/Terrain Maps menu are exported. Most online data provides different levels of detail depending on the zoom level when the request is made to the server. Choose to automatically determine the zoom level, use the highest available level of detail, or use the zoom level currently displayed on the screen. This setting will impact the resulting file size.
Raster Layer Format - JPEG2000 images are the new default method for imagery in packages in Global Mapper 17.2 . This reduces the file size compared to previous package files that stored imagery in GeoTiff format. Note: Packages created in Global Mapper 17.2 and newer with this option turned on will not be readable in previous versions of Global Mapper.
Use Double-Precision Coordinates for vector data setting will store coordinate data for vector features using double precision format, which allows for greater accuracy in the coordinate values (survey level) but greatly increases the file size.
The Discard feature attribute values option will remove all the attributes from all vector data.
The Combine Compatible Vector Layers into a Single Layer option causes all vector features with the same native projection to be combined into a single layer within the package file rather than maintaining their original layer structure.
The Embed Images Associated with Picture Points option causes any images associated with a vector feature (like points from an EXIF JPEG file) to be embedded in the GMP file for easy use on other systems.
Sort Lidar Point Clouds by 2D Location for Faster Display and Analysis reorders the 3D point clouds so that the points are listed in the file in sequential spatial order. This improves the point cloud processing and display speed. Unordered point clouds may be caused by the data acquisition or creation, and are particularly common in photo generated point clouds. The organization can be seen by choosing the Lidar drawing mode of Color Lidar by Point Index.
This tab is available with loaded vector data. The Simplification panel allows the user to set up the threshold at which points that don't contribute much to the shape of the vector line and area features being exported are removed in order to generate features with less vertices. By default, all vertices will be kept, but the user can move the slider to the right to get rid of relatively insignificant vertices and realize significant space spacings at the cost of some fidelity.
The Tiling panel allows the user to split up the data into regularly spaced tiles on export if desired rather than just exporting a single file.
The Export Bounds panel allows the
user to select what portion of the loaded data they wish to export.