<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"> <html> <head> <title>GRASS GIS: r.in.srtm</title> <meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1"> <link rel="stylesheet" href="grassdocs.css" type="text/css"> </head> <body bgcolor="white"> <img src="grass_logo.png" alt="GRASS logo"><hr align=center size=6 noshade> <h2>NAME</h2> <em><b>r.in.srtm</b></em> - Import SRTM HGT files into GRASS <h2>KEYWORDS</h2> raster, import <h2>SYNOPSIS</h2> <b>r.in.srtm</b><br> <b>r.in.srtm help</b><br> <b>r.in.srtm</b> [-<b>1</b>] <b>input</b>=<em>string</em> [<b>output</b>=<em>string</em>] [--<b>overwrite</b>] [--<b>verbose</b>] [--<b>quiet</b>] <h3>Flags:</h3> <DL> <DT><b>-1</b></DT> <DD>Input is a 1-arcsec tile (default: 3-arcsec)</DD> <DT><b>--overwrite</b></DT> <DD>Allow output files to overwrite existing files</DD> <DT><b>--verbose</b></DT> <DD>Verbose module output</DD> <DT><b>--quiet</b></DT> <DD>Quiet module output</DD> </DL> <h3>Parameters:</h3> <DL> <DT><b>input</b>=<em>string</em></DT> <DD>SRTM input tile (file without .hgt.zip extension)</DD> <DT><b>output</b>=<em>string</em></DT> <DD>Output raster map (default: input tile)</DD> </DL> <H2>DESCRIPTION</H2> <EM>r.in.srtm</EM> imports SRTM hgt files into GRASS. SRTM data sets can be downloaded from NASA at this FTP site (Version 1 and the improved Version 2):<br> <a href="ftp://e0srp01u.ecs.nasa.gov/srtm/">ftp://e0srp01u.ecs.nasa.gov/srtm/</a> <H2>NOTES</H2> SRTM tiles are of 1 degree by 1 degree size. The SRTM filename contains the coordinates which refer to the <b>center</b> of the lower left pixel (e.g., N51E010: lower left cell center at 10E, 51N). To itentify a tile name, a grid can be easily visualized in the GRASS monitor: <div class="code"><pre> d.grid size=1 </pre></div> To import TOPEX/SRTM30 PLUS data, use <em>r.in.bin</em>. <H2>SEE ALSO</H2> <EM> <a href="r.in.bin.html">r.in.bin</A> </EM> <p> The <a href="http://www2.jpl.nasa.gov/srtm/">Shuttle Radar Topography Mission</a> homepage at NASA's JPL. <br> The <a href="http://pub7.bravenet.com/forum/537683448/">SRTM Web Forum</a> <H2>REFERENCES</H2> M. Neteler, 2005. <a href="http://grass.itc.it/newsletter/GRASSNews_vol3.pdf">SRTM and VMAP0 data in OGR and GRASS.</a> <i><a href="http://grass.itc.it/newsletter/">GRASS Newsletter</a></i>, Vol.3, pp. 2-6, June 2005. ISSN 1614-8746. <H2>AUTHORS</H2> Markus Neteler<br> Improved by W. Kyngesburye and H. Bowman <p><i>Last changed: $Date: 2007-03-12 13:35:51 +0100 (Mon, 12 Mar 2007) $</i> <HR> <P><a href="index.html">Main index</a> - <a href="raster.html">raster index</a> - <a href="full_index.html">Full index</a></P> <P>© 2003-2008 <a href="http://grass.osgeo.org">GRASS Development Team</a></p> </body> </html>
