<html><body><div style="color:#000; background-color:#fff; font-family:verdana, helvetica, sans-serif;font-size:10pt"><div><span>Actually they work just fine on linux Ubuntu (instruction in the regular download, no need to compile) even LASview... but I was under the impression Luis had access to a windows machine anyway so OS wasn't the problem.<br></span></div><div style="color: rgb(0, 0, 0); font-size: 13.3333px; font-family: verdana,helvetica,sans-serif; background-color: transparent; font-style: normal;"><br><span></span></div><div style="color: rgb(0, 0, 0); font-size: 13.3333px; font-family: verdana,helvetica,sans-serif; background-color: transparent; font-style: normal;"><span>Haven't tried LAStools on Mac...<br></span></div><div><br><blockquote style="border-left: 2px solid rgb(16, 16, 255); margin-left: 5px; margin-top: 5px; padding-left: 5px;"> <div style="font-family: verdana, helvetica, sans-serif; font-size: 10pt;"> <div
style="font-family: times new roman, new york, times, serif; font-size: 12pt;"> <div dir="ltr"> <hr size="1"> <font face="Arial" size="2"> <b><span style="font-weight:bold;">From:</span></b> Michael Barton <Michael.Barton@asu.edu><br> <b><span style="font-weight: bold;">To:</span></b> "<grass-user@lists.osgeo.org>" <grass-user@lists.osgeo.org> <br><b><span style="font-weight: bold;">Cc:</span></b> Rebecca Bennett <rabennett@ymail.com>; Luis Ramirez <lu.ramirez.c@gmail.com> <br> <b><span style="font-weight: bold;">Sent:</span></b> Tuesday, 27 August 2013, 15:24<br> <b><span style="font-weight: bold;">Subject:</span></b> Re: [GRASS-user] v.lidar.edgedetection, v.surf.bspline and visualization issues<br> </font> </div> <div class="y_msg_container"><br><div id="yiv6673960240">
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Unfortunately the full set of LAS tools only works in Windows.
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<div>FWIW, I've built them into my Mac GRASS binaries (i.e., the ones that are open source) so that you can use both.</div>
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<div>Michael<br>
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<font class="yiv6673960240Apple-style-span" face="Helvetica" size="3"><span class="yiv6673960240Apple-style-span" style="font-size:12px;">______________________________</span></font></div>
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<font class="yiv6673960240Apple-style-span" face="Helvetica" size="3"><span class="yiv6673960240Apple-style-span" style="font-size:12px;">C. Michael Barton </span></font></div>
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<font class="yiv6673960240Apple-style-span" face="Helvetica" size="3"><span class="yiv6673960240Apple-style-span" style="font-size:12px;">Director, Center for Social Dynamics & Complexity</span></font></div>
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<font class="yiv6673960240Apple-style-span" face="Helvetica" size="3"><span class="yiv6673960240Apple-style-span" style="font-size:12px;">Professor of Anthropology, School of Human Evolution & Social Change</span></font></div>
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<span class="yiv6673960240Apple-style-span" style="font-size:12px;font-family:Helvetica;">Arizona State University</span></div>
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</span>480-965-6262 (SHESC), 480-965-8130/</span></font><span style="font-size:12px;">727-9746</span><span style="color:rgb(0, 0, 0);font-family:Helvetica;font-size:12px;font-style:normal;font-variant:normal;font-weight:normal;letter-spacing:normal;line-height:normal;text-transform:none;white-space:normal;word-spacing:0px;"> (CSDC)</span></div>
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</span><a rel="nofollow" target="_blank" href="http://csdc.asu.edu/">http://csdc.asu.edu</a>, <a rel="nofollow" target="_blank" href="http://shesc.asu.edu/">
http://shesc.asu.edu</a></span></font></div>
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<font class="yiv6673960240Apple-style-span" face="Helvetica" size="3"><span class="yiv6673960240Apple-style-span" style="font-size:12px;"><span class="yiv6673960240Apple-tab-span" style="white-space:pre;"></span><a rel="nofollow" target="_blank" href="http://www.public.asu.edu/~cmbarton">http://www.public.asu.edu/~cmbarton</a></span></font></div>
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<div>On Aug 27, 2013, at 12:00 PM, <<a rel="nofollow" ymailto="mailto:grass-user-request@lists.osgeo.org" target="_blank" href="mailto:grass-user-request@lists.osgeo.org">grass-user-request@lists.osgeo.org</a>></div>
<div> wrote:</div>
<br class="yiv6673960240Apple-interchange-newline">
<blockquote type="cite">
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<span style="font-family:Helvetica;font-size:medium;color:rgb(127, 127, 127);"><b>From:<span class="yiv6673960240Apple-converted-space"> </span></b></span><span style="font-family:Helvetica;font-size:medium;">Rebecca Bennett <<a rel="nofollow" ymailto="mailto:rabennett@ymail.com" target="_blank" href="mailto:rabennett@ymail.com">rabennett@ymail.com</a>><br>
</span></div>
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<span style="font-family:Helvetica;font-size:medium;color:rgb(127, 127, 127);"><b>Subject:<span class="yiv6673960240Apple-converted-space"> </span></b></span><span style="font-family:Helvetica;font-size:medium;"><b>Re: [GRASS-user] v.lidar.edgedetection, v.surf.bspline
and visualization issues</b><br>
</span></div>
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<span style="font-family:Helvetica;font-size:medium;color:rgb(127, 127, 127);"><b>Date:<span class="yiv6673960240Apple-converted-space"> </span></b></span><span style="font-family:Helvetica;font-size:medium;">August 27, 2013 6:02:20 AM MST<br>
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<span style="font-family:Helvetica;font-size:medium;color:rgb(127, 127, 127);"><b>To:<span class="yiv6673960240Apple-converted-space"> </span></b></span><span style="font-family:Helvetica;font-size:medium;">"<a rel="nofollow" ymailto="mailto:grass-user@lists.osgeo.org" target="_blank" href="mailto:grass-user@lists.osgeo.org">grass-user@lists.osgeo.org</a>"
<<a rel="nofollow" ymailto="mailto:grass-user@lists.osgeo.org" target="_blank" href="mailto:grass-user@lists.osgeo.org">grass-user@lists.osgeo.org</a>><br>
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<span style="font-family:Helvetica;font-size:medium;color:rgb(127, 127, 127);"><b>Reply-To:<span class="yiv6673960240Apple-converted-space"> </span></b></span><span style="font-family:Helvetica;font-size:medium;">Rebecca Bennett <<a rel="nofollow" ymailto="mailto:rabennett@ymail.com" target="_blank" href="mailto:rabennett@ymail.com">rabennett@ymail.com</a>><br>
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<div><span>Hello Luis,</span></div>
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<br>
<span></span></div>
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<span>I'm about to commit a sacrilegious act on the GRASS-user list but it would seem that Martin Isenburg's LAStools software is more appropriate for this stage of your lidar processing.</span></div>
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<br>
<span></span></div>
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<span><a rel="nofollow" target="_blank" href="http://rapidlasso.com/lastools/">http://rapidlasso.com/lastools/</a></span></div>
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<span>My workflow is to do the tasks you mention below (including the point cloud visualization and DEM generation) in LAStools and then import the DEM / DTM to GRASS for all subsequent processing.<br>
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<span>Best,</span></div>
<div style="font-size:13.3333px;font-family:verdana, helvetica, sans-serif;background-color:transparent;font-style:normal;">
<span>Rebecca</span></div>
<div><br>
<div style="font-family:Tahoma;font-size:13px;">
<div style="font-family:Tahoma;font-size:13px;"><font face="Tahoma" size="2">Rebecca Bennett<br>
Postdoctoral Associate, Wired! Group<br>
Department of Art, Art History and Visual Studies<br>
Duke University, Durham, NC<br>
<a rel="nofollow" target="_blank" href="http://www.pushingthesensors.com/">www.pushingthesensors.com</a></font></div>
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<font face="Arial" size="2"><b><span style="font-weight:bold;">From:</span></b><span class="yiv6673960240Apple-converted-space"> </span>Luis Ramirez <<a rel="nofollow" ymailto="mailto:lu.ramirez.c@gmail.com" target="_blank" href="mailto:lu.ramirez.c@gmail.com">lu.ramirez.c@gmail.com</a>><br>
<b><span style="font-weight:bold;">To:</span></b><span class="yiv6673960240Apple-converted-space"> </span><a rel="nofollow" ymailto="mailto:grass-user@lists.osgeo.org" target="_blank" href="mailto:grass-user@lists.osgeo.org">grass-user@lists.osgeo.org</a><span class="yiv6673960240Apple-converted-space"> </span><br>
<b><span style="font-weight:bold;">Sent:</span></b><span class="yiv6673960240Apple-converted-space"> </span>Monday, 26 August 2013, 9:03<br>
<b><span style="font-weight:bold;">Subject:</span></b><span class="yiv6673960240Apple-converted-space"> </span>[GRASS-user] v.lidar.edgedetection, v.surf.bspline and visualization issues<br>
</font></div>
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Hi there,<br>
<br>
I´m being working with Grass Gis just for few weeks. I´m trying to<span class="yiv6673960240Apple-converted-space"> </span><br>
generate a dsm and dtm from LIDAR data. I imported my data as LAS and i<span class="yiv6673960240Apple-converted-space"> </span><br>
was following the steps explained in the Grass Gis Book of neteler and<span class="yiv6673960240Apple-converted-space"> </span><br>
mitasova. However, I'am having some problems that are transforming an<span class="yiv6673960240Apple-converted-space"> </span><br>
easy task into a time-consuming-nightmare. the first thing that I do not<span class="yiv6673960240Apple-converted-space"> </span><br>
understand is why v.lidar.edgedetection works under Grass Gis 6.4. and 7<span class="yiv6673960240Apple-converted-space"> </span><br>
instaled in a Virtual machine with Ubuntu but not in Grass Gis 6.4. and<span class="yiv6673960240Apple-converted-space"> </span><br>
7 in a windows 7 Computer. after calculating the first two regions (from<span class="yiv6673960240Apple-converted-space"> </span><br>
9) it crashes. I tried to increment the parameters "see" and "sen" up to<span class="yiv6673960240Apple-converted-space"> </span><br>
the value 10. it is able to calculate a bit more but it still craches.<span class="yiv6673960240Apple-converted-space"> </span><br>
after googleing it i Just get information about a bug detected in 2006.<span class="yiv6673960240Apple-converted-space"> </span><br>
I would really apreciate to be able to run this module in a windows 7<span class="yiv6673960240Apple-converted-space"> </span><br>
computer. do you maybe have a clue?<br>
the second issue is related to v.surf.bspline. I am using a very small<span class="yiv6673960240Apple-converted-space"> </span><br>
map of 1km2 with 118798 points for testing (the goal is to use the<span class="yiv6673960240Apple-converted-space"> </span><br>
procedure for a map at least 20 times larger than this one). However,<span class="yiv6673960240Apple-converted-space"> </span><br>
Grass Gis 6.4 and 7 (for Ubuntu and For Windows) show me a warning<span class="yiv6673960240Apple-converted-space"> </span><br>
message. it says that it could take too long depending on the amount of<span class="yiv6673960240Apple-converted-space"> </span><br>
points. I already tried with different values for the parameters" sie"<span class="yiv6673960240Apple-converted-space"> </span><br>
and "sin" but it doesnt get any better. I just left the computer<span class="yiv6673960240Apple-converted-space"> </span><br>
calculating for few hours but I´m not really getting any result. do<span class="yiv6673960240Apple-converted-space"> </span><br>
anyone have an Idea what I´m doing wrong?<br>
Finally, I´m being trying to get a 3D visualization of the points but<span class="yiv6673960240Apple-converted-space"> </span><br>
both the monitors of the GUI and the wxs ended up crashing before I can<span class="yiv6673960240Apple-converted-space"> </span><br>
see a thing. is that a known problem? there is any known reason for such<span class="yiv6673960240Apple-converted-space"> </span><br>
a problem or even better, a solution or an alternative?<br>
<br>
Thank you in advance!<br>
<br>
Luis<br>
<br>
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