r.in.srtm(1)

NAME
r.in.srtm - Imports SRTM HGT files into raster map.

KEYWORDS
raster, import, SRTM

SYNOPSIS
r.in.srtm
r.in.srtm --help
r.in.srtm [-1] input=name [output=name] [--overwrite] [--help] [--verbose] [--quiet] [--ui]

  Flags:

-1
    Input is a 1-arcsec tile (default: 3-arcsec)

--overwrite
    Allow output files to overwrite existing files

--help
    Print usage summary

--verbose
    Verbose module output

--quiet
    Quiet module output

--ui
    Force launching GUI dialog

  Parameters:

input=name [required]
    Name of SRTM input tile (file without .hgt.zip extension)

output=name
    Name for output raster map (default: input tile)

DESCRIPTION
r.in.srtm imports SRTM HGT files into GRASS. SRTM Version 1 and improved Version 2 data sets can be downloaded from NASA at this site:
http://dds.cr.usgs.gov/srtm/ (archived)
https://earthexplorer.usgs.gov/

Gap-filled SRTM Version 3 data can be downloaded from USGS at this site:
https://e4ftl01.cr.usgs.gov/MEASURES/SRTMGL3.003/2000.02.11/

NOTES
SRTM tiles are of 1 degree by 1 degree size. The SRTM filename contains the coordinates which refer to the center of the lower left pixel (e.g., N51E010: lower left cell center at 10E, 51N). To identify a tile name, a grid can be easily visualized by d.grid:

d.grid size=1

To import TOPEX/SRTM30 PLUS data, use r.in.bin.

REFERENCES
M. Neteler, 2005. SRTM and VMAP0 data in OGR and GRASS. GRASS Newsletter, Vol.3, pp. 2-6, June 2005. ISSN 1614-8746.

SEE ALSO
r.in.bin, r.in.srtm.region (Addon), r.in.nasadem (Addon)

The Shuttle Radar Topography Mission homepage at NASA’s JPL. (archived)
The SRTM Web Forum (archived)

AUTHORS
Markus Neteler
Improved by W. Kyngesburye and H. Bowman
Update for SRTM V3 by Markus Metz

SOURCE CODE

Available at: r.in.srtm source code (history)

Accessed: Saturday May 09 13:05:12 2026

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