An industry-standard binary file format that maintains information related to lidar data.

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1answer
67 views

Installing LASTools to QGIS on a Mac (or other LAS processing plugins)

I recently saw this link how to install LAStools toolbox to QGIS. The problem is that the instructions are only for Windows users. Now I wonder if it's possible to install LAStools on a Mac with QGIS ...
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2answers
72 views

Removing duplicates from large LAS files

Are there any publicly and free (not necessarily open-source) applications that can remove duplicate points from LiDAR clouds? I would like something on the lines of lasduplicate -unique_xyz, which ...
2
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0answers
41 views

What can I do with lidar returns of 6 or greater in LAS 1.2 specification?

I have lidar LAS data that contains a number of points that represent returns 6 or 7. The data is supposed to be in ASPRS LAS 1.2 specification, which does not allow return numbers (echos) greater ...
3
votes
2answers
124 views

Creating DSM and DTM from a LAS using a freeware solution

Is it possible to export a surface and terrain model files from an aerial, LiDAR point cloud (LAS) set? I am using SAGA GIS for very basic operations, but I couldn't find this option (and I have a ...
6
votes
4answers
230 views

How to clip LAS data using shapefile polygons and open source software?

I am trying to clip or filter lidar files (las, xyz) using a shapefile that contains multiple polygons. Is there open source software that can do this spatial operation? My las files are enormous, ...
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1answer
65 views

Import a .las-file into QGIS 2.0.1?

I want to import a .las-file into QGIS 2.0.1. My guess is that I need to convert it into a format that is readable in QGIS. But how? I tried using LASTools. I downloaded it, but I don't understand how ...
3
votes
1answer
52 views

ArcMap 10.1 drawing an irregularly shaped boundry polygon around a set of LAS point data?

I am working with a set of LAS data which is irregularly shaped, picture a starfish as the point coverage, surrounding the starfish may be water on one side, may be more land elsewhere but no points ...
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0answers
25 views

LAS 1.2 format visualization issue

I am having difficulty properly visualizing aerial LIDAR data from the following source: http://csc.noaa.gov/htdata/lidar1_z/geoid12a/data/1124/ Taking any of the laz files, the pointcloud displays ...
16
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2answers
655 views

Proper workflow for LAS to DEM conversion

I regularly come across LiDAR (.LAS) files with elevation data. When I do, I always struggle to find a way of converting them to a DEM for hydrological analysis. I have developed several workflows, ...
1
vote
1answer
67 views

How to add LiDAR Intensity attribute to a point feature class?

I need to convert LASD (ESRI LAS Dataset) to ASCII text file. I've export the data to point feature class (LAS to Multipoint), converted multipart to single part and calculate X Y and Z.My first ...
2
votes
1answer
119 views

Load LAS files in MapInfo

Is it possible to open LAS files within MapInfo? If so, how is accomplished in MapInfo 10.0?