<html><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; ">Hi,<div> How can I import NASA SRTM DEM data, stored in a file format called hgt, into VTK-5.3.x? </div><div><br></div><div>Apparently the *hgt file format can just be renamed to *.dem, but the contents of the file are stored in a format called GTOPO30 DEM, I think. </div><div><br></div><div>When I opened the SainteHelens.dem file supplied with the VTK Data package, I can see that it consists of ascii values and is human-readable.</div><div><br></div><div>However, when I look at a NASA SRTM file, it appears to be some sort of binary file format. </div><div><br></div><div>Here is an example of a NASA SRTM file <span class="Apple-style-span" style="font-family: Monaco; font-size: 10px; "><a href="ftp://e0srp01u.ecs.nasa.gov/srtm/version2/SRTM3/Australia/S34E150.hgt.zip">ftp://e0srp01u.ecs.nasa.gov/srtm/version2/SRTM3/Australia/S34E150.hgt.zip</a></span></div><div><font class="Apple-style-span" face="Monaco" size="2"><br></font></div><div>vtkDEMReader will not directly work with the NASA SRTM file. </div><div><br></div><div>Has someone implemented a reader that will read in the NASA SRTM file? </div><div><br></div><div>If someone can help point me in the right direction, I can even spend some time and try to implement a new vtkSRTMReader class.</div><div><br></div><div>Best regards,</div><div><br></div><div>Elvis Dowson</div><div><br></div></body></html>