On Saturday 03 May 2008 03:14:50 pm Mateusz Loskot wrote: > Helena Mitasova wrote: > > 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. > > Helena, > > That's great! > > > 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. > > Yes, it confirms what I've read in GRASS docs and Wiki pages, > that there is no direct support to ASPRS LAS format. > > > 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. > > I'm willing to contribute a module for LAS read/write. However, I'm not > an experienced GRASS user nor developer, so I'll likely need to prepare > myself a little (read docs and code) before I can start. Means, I'm not > sure I can provide you with ready solution very soon. > > > 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? > > Right, that seems to be basic question. > > If it will help to make a decision: > The libLAS building follows well-known *nix patterns and there is > autotools-based builder. Optionally, users are provided with cmake > configuration as well as project files for Visual C++ 2005. > The library itself has no external dependencies. > > > Thanks for asking and I hope we will see LAS support in GRASS soon (I > > have plenty of data to test it), > > I'd be happy if I could help.
While I do not have any lidar data on hand, there are several researchers at UCD who both use GRASS and work with lidar. I am very interested in any integration of libLAS into a GRASS module, and I will pass the word around here. Great work Mateusz! Dylan -- Dylan Beaudette Soil Resource Laboratory http://casoilresource.lawr.ucdavis.edu/ University of California at Davis 530.754.7341 _______________________________________________ grass-dev mailing list [email protected] http://lists.osgeo.org/mailman/listinfo/grass-dev
