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Open .HGT file Extension

File Type : Shuttle Radar Topography Mission Data (SRTM)

Compatible with: (Mac OSX 7, 8, 9, 10, 11, 12)

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.HG

ExtensionSmallImg What is .HGT file?

GIS data file stored in the Shuttle Radar Topography Mission (SRTM) format; contains global elevation data captured during NASA space missions; may include up to a one arcsecond resolution; used for analyzing the earth's topography and for generating topographical images. Some data in the original SRTM dataset is missing due to limits of the space missions. These areas are referred to as "voids." Efforts have been made to fill in the missing gaps using interpolation methods. For example, the National Geospatial-Intelligence Agency (NGA) created the "Version 2" and "Version 2.1" datasets, which include modified data. Therefore, some downloaded HGT files may include interpolated data. HGT files are named with longitude and latitude coordinates. For example, N00W177.hgt contains data for one degree of latitude (00-01 North) and one degree of longitude (177-178 West). NOTE: The "HGT" extension is an abbreviation for "height."

Recommended Software Programs to open .HGT file

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Microsoft Windows:
  • Safe Software FME Desktop
  • ESRI ArcGIS for Desktop
  • DG Terrain Viewer
  • DG SRTM Void Killer
  • SRTMFill
  • VTBuilder
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Linux:
  • DG Terrain Viewer