High Mateus,
we would love to see at least a direct input of LAS data into GRASS
using the libLAS library!
Other tools would be welcome too.
There is a growing number of GRASS users who work with lidar data (I
have been using lidar data with GRASS for my research for over 7
years now, even before LAS was established).
Many general GRASS modules are great for lidar data processing and
analysis and there is also a set of specialized tools. But if the
data come in LAS format we need to use external tools (e.g. LAStools
- I see that libLAS is based on it) to convert to ascii and import
(using v.in.ascii or r.in.xyz). Having a module that reads LAS data
directly would be a great help.
I was just invited to USGS workshop to show some applications of
lidar data done with open source software tools and I am sure that
the first question I will get is whether GRASS can read LAS data - it
would be great if I could say yes.
But this will raise a question for GRASS dev whether we want to add
another dependency to GRASS in addition to GDAL and PROJ and a number
of optional ones?
Thanks for asking and I hope we will see LAS support in GRASS soon (I
have plenty of data to test it),
Helena
----------------------
Helena Mitasova
Associate Professor
Department of Marine, Earth
and Atmospheric Sciences
1125 Jordan Hall, Campus Box 8208
North Carolina State University
Raleigh NC 27695-8208
http://skagit.meas.ncsu.edu/~helena/
On May 3, 2008, at 3:22 PM, Mateusz Loskot wrote:
Hi,
My name is Mateusz Loskot (Poland). I'm writing first time to this
list,
so I'd like to say hello to all!
I'd like to ask if there would be a potential interest and application
for libLAS library (http://liblas.org) in GRASS. The library provides
implementation of the ASPRS LAS format specification as well as a
set of
command line utilities to manipulate LAS files.
I don't know what's the exact LIDAR toolset available in GRASS but
perhaps there is no LAS support and libLAS could come handy here.
Looking foward to hear your comments.
--
Mateusz Loskot
http://mateusz.loskot.net
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