<html><body><div style="color:#000; background-color:#fff; font-family:verdana, helvetica, sans-serif;font-size:10pt"><div>sorry for the delayed reply - (windoze day yesterday)</div><div><br></div><div>>Hmm. Is lasinfo --help working?</div><div><br></div><div>Yes. wont paste the output here but it is as expected.<br></div><div><br></div><div>>liblas-config --libs<br>-L/usr/lib -lgeotiff -L/usr/lib -lgdal1.6.0</div><div><br></div>>liblas-config --includes<br>-I/usr/include/geotiff -I/usr/include/gdal<br><br>Thanks,<br><br>Rebecca<div><br><blockquote style="border-left: 2px solid rgb(16, 16, 255); margin-left: 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;"><font face="Arial" size="2"><hr size="1"><b><span style="font-weight: bold;">From:</span></b> Markus Metz <markus.metz.giswork@googlemail.com><br><b><span
style="font-weight: bold;">To:</span></b> Rebecca Bennett <rabennett@ymail.com><br><b><span style="font-weight: bold;">Cc:</span></b> "grass-user@lists.osgeo.org" <grass-user@lists.osgeo.org><br><b><span style="font-weight: bold;">Sent:</span></b> Wednesday, 27 July 2011, 18:01<br><b><span style="font-weight: bold;">Subject:</span></b> Re: [GRASS-user] LiDAR LAS import<br></font><br>On Wed, Jul 27, 2011 at 3:28 PM, Rebecca Bennett <<a ymailto="mailto:rabennett@ymail.com" href="mailto:rabennett@ymail.com">rabennett@ymail.com</a>> wrote:<br>> sure -<br>><br>> checking whether to use libLAS... yes<br>> checking for liblas-config... /usr/bin/liblas-config<br>> configure: error: *** Unable to locate libLAS library.<br>><br>> I have the packages liblas1, liblas-dev, lib-las-bin and python-liblas<br>> installed through synaptic and am wondering if there is a libraty package<br>> missing?<br><br>Hmm. Is lasinfo
--help working?<br><br>What does<br>liblas-config --libs<br>and<br>liblas-config --includes<br>say?<br><br><br>><br>> ________________________________<br>> From: Markus Metz <<a ymailto="mailto:markus.metz.giswork@googlemail.com" href="mailto:markus.metz.giswork@googlemail.com">markus.metz.giswork@googlemail.com</a>><br>> To: Rebecca Bennett <<a ymailto="mailto:rabennett@ymail.com" href="mailto:rabennett@ymail.com">rabennett@ymail.com</a>><br>> Cc: "<a ymailto="mailto:grass-user@lists.osgeo.org" href="mailto:grass-user@lists.osgeo.org">grass-user@lists.osgeo.org</a>" <<a ymailto="mailto:grass-user@lists.osgeo.org" href="mailto:grass-user@lists.osgeo.org">grass-user@lists.osgeo.org</a>><br>> Sent: Wednesday, 27 July 2011, 13:16<br>> Subject: Re: [GRASS-user] LiDAR LAS import<br>><br>> Rebecca Bennett wrote:<br>>> Hello,<br>>> Just trying to install GRASS 7 on Ubuntu 10.04 to try out the las
import<br>>> functions but I'm getting error messages during the configure that it is<br>>> unable to find the liblas library, however the liblas library is installed<br>>> in usr/bin/lib/ so I'm a bit puzzled...<br>><br>> Can you post the exact error message? Also, liblas support will only<br>> be available if liblas-config exists.<br>><br>> Markus M<br>><br>>> Did anyone else get stuck here or am I missing something obvious?<br>>> Thanks for reading,<br>>> Rebecca<br>>><br>>> ________________________________<br>>> From: Markus Metz <<a ymailto="mailto:markus.metz.giswork@googlemail.com" href="mailto:markus.metz.giswork@googlemail.com">markus.metz.giswork@googlemail.com</a>><br>>> To: Hamish <<a ymailto="mailto:hamish_b@yahoo.com" href="mailto:hamish_b@yahoo.com">hamish_b@yahoo.com</a>><br>>> Cc: grass-user <<a ymailto="mailto:grass-user@lists.osgeo.org"
href="mailto:grass-user@lists.osgeo.org">grass-user@lists.osgeo.org</a>>; GRASS developers list<br>>> <<a ymailto="mailto:grass-dev@lists.osgeo.org" href="mailto:grass-dev@lists.osgeo.org">grass-dev@lists.osgeo.org</a>><br>>> Sent: Wednesday, 25 May 2011, 12:48<br>>> Subject: Re: [GRASS-user] LiDAR LAS import<br>>><br>>> On Wed, May 25, 2011 at 12:16 PM, Hamish <<a ymailto="mailto:hamish_b@yahoo.com" href="mailto:hamish_b@yahoo.com">hamish_b@yahoo.com</a>> wrote:<br>>>> Markus Metz wrote:<br>>>>> Hi all,<br>>>>><br>>>>> GRASS 7 has a new module v.in.lidar for importing LiDAR LAS files<br>>>>> (*.las or *.laz). The LAS file format is commonly used for storing<br>>>>> LiDAR point clouds, but is unfortunately not supported by OGR.<br>>>>> v.in.lidar uses the libLAS library [0] and is only compiled if the<br>>>>> libLAS
library is present.<br>>>>><br>>>>> I chose to use the library instead of writing a custom LAS reading<br>>>>> interface because the current LAS library version 1.6.1 is stable,<br>>>>> supports LAS file versions 1.0, 1.1, 1.2, 1.3, 1.4, 1.5, 1.6, each of<br>>>>> which can store LiDAR points in up to 5 different point formats. The<br>>>>> user and the interface do not need to know the file version and point<br>>>>> format of a given file, all that is conveniently handled by the libLAS<br>>>>> library in the background. The library has Large File Support (LFS)<br>>>>> and is well tested on different platforms, also with different<br>>>>> endian-ness. This functionality is not that easy to replicate.<br>>>>><br>>>>> You will need to get the libLAS library and configure GRASS 7 with<br>>>>>
--with-liblas in order to have the module available. Please test!<br>>>>><br>>>>> Markus M<br>>>>><br>>>>> [0] <a href="http://www.liblas.org" target="_blank">http://www.liblas.org</a><br>>>><br>>>><br>>>> neat! any time trials to say how much faster it is than piping<br>>>> las2txt | v.in.ascii<br>>>> ?<br>>><br>>> Note that las2txt does NOT apply scale and offset to x,y,z, this would<br>>> need to be done afterwards in order to obtain correct coordinates.<br>>> Therefore the output of las2txt | v.in.ascii with the sample las file<br>>> I used is incorrect.<br>>><br>>> I discovered a bug in v.in.ascii: from a point file with | as field<br>>> separator like<br>>><br>>> 1|2|3||5|6<br>>><br>>> only the first 3 columns will be imported because column 4 is empty<br>>> which means
that columns 5 and 6 are skipped.<br>>><br>>> v.in.lidar is a notch faster than las2txt | v.in.ascii. And easier to<br>>> use...<br>>> Speed comparisons:<br>>><br>>> # sample las file with 1,287,775 points<br>>><br>>> # with table and topology<br>>> time las2txt -i points.las --stdout --parse xyztinrcCpedRGBau<br>>> --delimiter "|" | v.in.ascii in=- out=points_ascii -z x=1 y=2 z=3 --o<br>>><br>>> real 6m34.430s<br>>> user 4m57.530s<br>>> sys 2m3.693s<br>>><br>>> time v.in.lidar in=points.las out=points_las -o --o<br>>><br>>> real 6m13.823s<br>>> user 4m32.061s<br>>> sys 2m1.068s<br>>><br>>><br>>> # without table, with topology<br>>> time las2txt -i points.las --stdout --parse xyz --delimiter "|"
|<br>>> v.in.ascii in=- out=points_ascii -zt x=1 y=2 z=3 --o<br>>><br>>> real 1m53.578s<br>>> user 1m47.032s<br>>> sys 0m9.238s<br>>><br>>> time v.in.lidar in=points.las out=points_las -ot --o<br>>><br>>> real 1m44.876s<br>>> user 1m34.450s<br>>> sys 0m8.488s<br>>> _______________________________________________<br>>> grass-user mailing list<br>>> <a ymailto="mailto:grass-user@lists.osgeo.org" href="mailto:grass-user@lists.osgeo.org">grass-user@lists.osgeo.org</a><br>>> <a href="http://lists.osgeo.org/mailman/listinfo/grass-user" target="_blank">http://lists.osgeo.org/mailman/listinfo/grass-user</a><br>>><br>>><br>>><br>>> _______________________________________________<br>>> grass-user mailing list<br>>> <a
ymailto="mailto:grass-user@lists.osgeo.org" href="mailto:grass-user@lists.osgeo.org">grass-user@lists.osgeo.org</a><br>>> <a href="http://lists.osgeo.org/mailman/listinfo/grass-user" target="_blank">http://lists.osgeo.org/mailman/listinfo/grass-user</a><br>>><br>>><br>><br>><br>><br><br><br></div></div></blockquote></div></div></body></html>