Leica manual 2.2Background Files in the GS20, 2.2.1Overview, Data Collection, 3 Background Maps

2.2Background Files in the GS20

Often it is important for a user to see the location of they’re current position and those Features they have collected within a larger context. However, it is not always necessary or even beneficial to have that data selectable. With the ability to create vector background data, the GS20 can now:

•Attach larger vector reference files

•Use the same vector reference file for multiple jobs

•Reference multiple files to a job

•Reference previously collected jobs in an open job

•Only re-import collected or updated data

2.2.1Overview

GS20 background files are graphic files that can be created in GIS DataPRO, and are automatically created when job data is collected in the GS20. The graphic file contains the file extension qtr, which stands for quadtree; a method of spatially indexing vector data. When a job is created in the GS20, a graphic file of that same name is also created. From job management, a background screen can be accessed, allowing the user to reference other “background” graphical data to the job. Background graphic files are for visual reference only, and are not selectable.

2.2.2Adding Background Files to a GS20 Job

To add a background Map, enter Job management, highlight a selected job, and select “Background Maps” from the context menu.

Figure 2-3: Background Maps

Leica GS20 Field Guide-1.1.0en

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Data Collection