DMT File – What is .dmt file and how to open it?


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DMT File Extension

DeLorme Transfer File – file format by DeLorme

DMT (DeLorme Transfer File) is a proprietary file format used to transfer maps, routes, and other data between DeLorme mapping software and GPS devices. It is a compressed binary format that includes data such as map tiles, waypoints, and track logs.

DeLorme Transfer File (DMT)

A DMT file, an abbreviation for DeLorme Transfer File, is a proprietary file format developed by DeLorme, a mapping and navigation software provider. It serves as a storage container for various types of geospatial data and map information, including waypoints, routes, tracks, symbols, and other related content. DMT files enable the seamless transfer of geospatial data between different DeLorme mapping products and devices, such as Topo USA, Earthmate PN-60w, and InReach SE+.

Applications and Uses

DMT files play a crucial role in organizing, managing, and sharing geospatial data. They facilitate the exchange of maps, waypoints, tracks, and symbols among different DeLorme software applications and devices. For instance, users can create and save geospatial data in Topo USA, then export it as a DMT file for use in Earthmate PN-60w for navigation purposes. Additionally, DMT files can be transferred to InReach SE+ satellite communicators for storing and viewing maps and waypoints during outdoor adventures. The versatility and compatibility of DMT files make them a valuable resource for outdoor enthusiasts and professionals working with geospatial data.

Delorme Topo Mapping Software

DeLorme Topo Mapping Software is a comprehensive suite of tools designed for outdoor enthusiasts and GIS professionals. It allows users to create and view topographic maps, add waypoints and routes, and analyze elevation data. The software uses the DMT file format to store map data, including elevation, contours, landmarks, and other geographic features. To open a DMT file in DeLorme Topo Mapping Software, simply launch the program, click on the “File” menu, and select “Open.” Navigate to the location of the DMT file and click “Open” to load the map data.

Third-Party Software

In addition to DeLorme Topo Mapping Software, several third-party applications can open and view DMT files. These applications include:

  • GPS Track Editor: A free and open-source GPS data viewer and editor
  • TopoFusion: A commercial software package for creating and editing topographic maps
  • Global Mapper: A professional GIS software suite with a wide range of capabilities

To open a DMT file in one of these third-party applications, follow the software’s instructions for importing data. Typically, this involves clicking on the “File” menu, selecting “Import,” and navigating to the location of the DMT file. Once the file is imported, the map data will be available for viewing and analysis.

Delorme Transfer Files (DMT): Structure and Applications

Delorme Transfer Files (DMT) are specifically designed for storing and transferring mapping-related data between DeLorme mapping software applications, including DeLorme TopoUSA, Street Atlas USA, and XMap. This file format encapsulates a wide range of geospatial data, including topographic maps, road networks, points of interest, and GPS tracks. DMT files serve as a convenient and efficient means of sharing mapping data among users and across different DeLorme software platforms.

The structure of DMT files is optimized for efficient storage and transmission of mapping information. They typically include a header that contains metadata about the file, followed by a series of data records. Each record represents a specific geographic feature or element, such as a road segment or a topographic elevation point. This structured organization allows for quick and easy access to specific data within the file. The compact nature of DMT files also enables the efficient exchange of mapping data over networks and storage media.

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