<p dir="ltr">The point sampling tool worked for me for 400 000 random sampling point on Lidar DEM. It works well.<br>
Good luck!</p>
<p dir="ltr">Nicolas Cadieux M.Sc.<br>
Les Entreprises Archéotec inc. <br>
8548, rue Saint-Denis Montréal H2P 2H2<br>
Téléphone: 514.381.5112 Fax: 514.381.4995<br>
www.archeotec.ca</p>
<div class="gmail_quote">On Dec 16, 2015 18:24, "kwanza [via OSGeo.org]" <<a href="/user/SendEmail.jtp?type=node&node=5241696&i=0" target="_top" rel="nofollow" link="external">[hidden email]</a>> wrote:<br type='attribution'><blockquote style='border-left:2px solid #CCCCCC;padding:0 1em' class="quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
<div dir="ltr">Thanks everyone, will try these suggestions, let's see which one allows the most effective workflow. <div>Can use GRASS as well, but still waiting for my DEM though.<div><br /></div><div>thank you all,</div><div>Szilard</div><div><br /></div></div></div><div><br /><div class="elided-text">On 16 December 2015 at 15:57, Szilard Albert <span dir="ltr"><<a href="/user/SendEmail.jtp?type=node&node=5241688&i=0">[hidden email]</a>></span> wrote:<br /><div dir="ltr"><div><div><div><div>Hello,<br /><br /></div>I need to extract elevation values from a DEM at certain points for which I have X and Y values.<br /></div>My points are contained in several profiles, each profile with hundreds of points. <br /><br /></div>My input is a text file, one file per profile, with the following format:<br /><br /></div><div>PointA X Y<br /></div><div>PointB X Y<br />......<br /></div><div>PointZ X Y.<br /><br /></div><div>I would like a solution where I can feed the above text input, and get my output as another text file<br /></div><div>with similar format, Point X Y Z (or Point Z X Y). Alternatively just a text file with one column containing Z,<br /></div><div>but exactly same number of rows, so I can copy and paste to the input.<br /><br /></div><div>One single command that solves one point only would do as well, I would just create a script file from my every<br /></div><div>text file for every line....<br /><br /></div><div>Any suggestions would be greatly appreciated.<br /><br /></div><div>I am using QGIS 2.8 Wien in Ubuntu.<br /><br /></div><div>Thank you.<font color="#888888"><br /></font></div><font color="#888888"></font><div>Szilard<br /><br /></div><div><br /><br /></div><div><br /></div><br /></div>
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