How to Merge Garmin Map Layers

Written by aaron wein
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Viewing different map layers on your Garmin GPS can be cumbersome. Combining map layers into a single file can save the hassle of changing your GPS's map layer constantly. It can also save storage space. However, Garmin's official programs, such as MapSource and Basecamp, do not offer this feature. If you want to merge layers, you must use the GMapTool, available as a free download.

Skill level:
Moderately Easy

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Things you need

  • GMapTool

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Instructions

  1. 1

    Download the GMapTool set-up (see Resources).

  2. 2

    Open the set-up file and follow the prompts to install GMapTool.

  3. 3

    Run GMapTool.

  4. 4

    Click the "Files" tab.

  5. 5

    Click "Add Files." A dialogue box appears.

  6. 6

    Locate and click the map layer file you wish to merge. Click "OK." The dialogue box closes and the file appears in the main pane. Repeat Steps 5 and 6 to add more maps.

  7. 7

    Click the "Join" tab.

  8. 8

    Click "Output File Name." A dialogue box appears.

  9. 9

    Choose an easy-to-find location to save the merged map layers, such as the desktop. Click "OK."

  10. 10

    Enter the file name for the merged map layers in the "Mapset Name" field.

  11. 11

    Click "Join All." The maps merge and save to your chosen location.

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