LIDAR (Light Detection and Ranging or Laser Imaging, Detection and Ranging) is an active optical remote sensing technology that measures properties of scattered light to find range and/or other information of a distant target.

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Feature Extraction from LiDAR in Erdas 2012 or ArcGIS10.1

I know it's possible but I just can't find or figure out a workflow for it. Erdas Webinars has the workflow for ver 2011 but this is very different in 2013 as it uses a raster img file instead. I ...
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Why does ArcGIS Publisher appear to mirror ecw Lidar files on southern axis of file?

ArcGIS Publisher appears to be mirroring the ecw Lidar files on the southern axis of the file. Has anyone experience this? Is there a setting in ArcGIS Publisher that I need to turn on or off? The way ...
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How to track raw data deliveries and determine when all input data has been delivered and is ready for processing [closed]

When working with large amounts of raw input data for your analysis, how do you track data from different sources and covering different geographic extents to determine when you can proceed with the ...
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97 views

How to remove pixel values below 0 in Digital Elevation Model in ArcGIS?

I made a DEM layer from LAS file (LiDAR).Now for showing a map I have a map like the image below! I wonder how can I remove black area? They have the value -2 to 16! How is possible to set the value ...
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176 views

How do I read SBET file in python?

I have an SBET (Smoothed Best Estimate of Trajectory) file that I would like to read in python. I found these links that discuss options for reading/writing SBET files, but I was wondering if our ...
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89 views

Point cloud LiDAR

I have been trying to grid a point cloud, version1.2, LiDAR datasets which are intended to be used for hydraulic simulation of flood propagation. Already, I have used Arc* to work on the traditional ...
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122 views

Where to obtain LiDAR Data for Romania?

I need LIDAR Data for realizing a urban hydrology study (Romania areas), whence I can get this data? There is a chance to obtain data for this area (Cluj-Napoca city)? I'm PhD student are chances to ...
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438 views

Is it possible to load an .las file directly into QGIS? [duplicate]

Is it possible to load an .las file directly into QGIS? I would like to be able to load LiDAR data and to be able to do analysis based various feature attributes; e.g., elevation, classifications, ...
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224 views

Why does ArcGIS model not recognize Z value column?

My ArcGIS model used to handle .XYZ files well, but now it fails to recognize Z-value column as such - it either recognise no field at all, or it offers some defaults such as "OID". Since the last ...
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laspy reading las file

New to laspy and encountering an error. The first code block describes the file header, the second (In[24]) fails to open the file with laspy: In [21]: import numpy import laspy from laspy.file ...
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28 views

Opengeo and Ubuntu memory issue

I was working with LiDAR in Opengeo suite while following the Boundless tutorials (http://workshops.boundlessgeo.com/tutorial-lidar/) In my recent post titled 'LiDAR and Opengeo', I mentioned about ...
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Converting SBET (Smoothed best trajectory) files to an ASCII format [duplicate]

I have LiDAR trajectory data in an SBET (Smoothed best trajectory) format, but to the analysis I wish to carry out I need it in an ASCII format. Does anyone know if there's a way to convert it? Thanks ...
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56 views

How to build a LAS dataset for simple viewing in Arcgis

I've been given a few LIDAR files to show my boss how useful the data can be. The problem I have is that I simply need to be able to view it using LASTools but I need to build a LAS Dataset first. I ...
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33 views

How to best alter surface from LIDAR for designing low water crossing and its approaches?

I was wondering if you might be willing to help me work out the best way to use LiDAR data for my thesis project. It involves altering the terrain to add low water crossings at various angles and ...
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448 views

GDAL RasterIO grabbing memory

I have written an application in c++ to read LiDAR files and convert to various rasters using GDAL; this worked very well on small scale tests (47 LAS files) however, when used on a live task the ...