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libLAS - LAS 1.0/1.1/1.2 ASPRS LiDAR data translation toolset
==============================================================================
libLAS is a C/C++ library for reading and writing ASPRS LAS versions 1.0, 1.1 and 1.2
data. The LAS format is a sequential binary format used to store data from sensors
and as intermediate processing storage by some `LiDAR`_-related applications.
libLAS is available under the terms of the `BSD License`_. It builds on work
by `Martin Isenburg and Jonathan Shewchuk`_ of the University of North
Carolina in their `LAStools`_ project by replacing the base C++ library
with new development and porting Martin's tools this new code.
libLAS' initial development was supported by the `IGSB`_ of the Iowa DNR
for use in its state-wide `LIDAR`_ project.
Download
------------------------------------------------------------------------------
The 1.2.0 version of libLAS can be downloaded from http://liblas.org/wiki/1.2.0
Older releases may be obtained from http://liblas.org/wiki/Releases
Binaries
..............................................................................
Windows binaries of libLAS are provided in two forms. The easiest form is
to obtain `OSGeo4W`_ and select the libLAS package to install. Alternatively,
you can download a Windows package with full spatial reference support from
the release page. GDAL support is only provided with the `OSGeo4W`_ package, however.
Linux, Mac OS X, and Solaris binaries are not provided. The source code
uses the standard GNU autotools/automake stack for compilation and installation.
Documentation
------------------------------------------------------------------------------
`LAStools`_ / libLAS Command-line Utilities
..............................................................................
* `lasinfo`_
* `lasmerge`_
* `las2las`_
* `las2txt`_
* `txt2las`_
* `las2ogr`_
Software Development with libLAS
..............................................................................
* `FOSS4G 2008`_ presentation that provides a basic overview of the design and philosophy of libLAS
* `ASPRS Workshop Demo`_ by Jason Woolard of NOAA describing how to use libLAS with Python
* `Tutorials`_ - tutorials on using libLAS from C++, Python and .NET/Mono languages
* `LAS C API`_- doxygen docs that describe the libLAS C API
* `dotnetLibLAS API`_ - docs for the .NET API
* `LAS Doxygen Docs`_ - doxygen docs of the entire C/C++ API
* `LAS Format Elements`_ - comparison of elements of LAS Format 1.0 and 1.1
* `Software`_ - a list of geospatial software with reading and writing capabilities of LAS Format
* `Resources`_ - a list of general LiDAR/LAS resources
LAS Format Specifications
..............................................................................
The LAS Format Standard is maintained by `ASPRS Standards Committee`_. LAS
format standard documents are available in PDF format:
* `LAS 1.2 Format Standard`_ (2008-09-02)
* `LAS 1.1 Format Standard`_ (2005-05-07)
* `LAS 1.0 Format Standard`_ (2003-05-09)
License
------------------------------------------------------------------------------
libLAS is available under the terms of the `BSD License`_.
See `License`_ for a copy.
FAQ
------------------------------------------------------------------------------
The FAQ is available from http://liblas.org/wiki/FAQ
Features of libLAS
------------------------------------------------------------------------------
Open Source
..............................................................................
libLAS is open source software. You can embed it in your own applications
(and even resell it) as long as you follow the crediting restriction of the BSD
license. See `License`_ for more detail.
Multiple APIs
..............................................................................
libLAS has C, C++, .NET, and Python APIs.
Spatial Reference System Support
..............................................................................
Linked against a 1.2.5+ version of `libgeotiff`_, you can set and get the spatial reference
systems of LAS files using simple `proj.4`_ coordinate system definitions.
Alternatively, with libLAS 1.2, you can link against `GDAL`_ to be able to
manipulate spatial references using WKT.
Simple Variable Length Record Abstraction
..............................................................................
libLAS provides a sensible abstraction for working with variable length records (VLR)
in LAS files, and it transparently manages the VLRs related to spatial referencing
systems for you.
Command-line Utilities
..............................................................................
libLAS provides ports of the `LAStools`_ utilities by Martin Isenburg for doing
things like translating from one version of the LAS format to another, inspecting
header information, and translating LAS data to and from text.
Cross-platform operation
..............................................................................
libLAS is known to work on all editions of Microsoft Visual C++ 7.1+ (Windows) and
GCC 4.1+ (Mac OS X and Linux) platforms on both big- and little-endian architectures.
Development
------------------------------------------------------------------------------
Authors
..............................................................................
The libLAS development team are:
* `Howard Butler`_
* `Mateusz Loskot`_
* `Phil Vachon`_
* Martin Vales
* `Frank Warmerdam`_
Special thanks to `Martin Isenburg and Jonathan Shewchuk`_ for their
`LAStools`_ pioneering implementation of the ASPRS LAS standard that made
development of the libLAS library possible.
Subversion Tree
..............................................................................
The SVN repository URL is available at http://liblas.org/svn
::
svn checkout http://liblas.org/svn/trunk/
Information about Trac
..............................................................................
* `Trac <http://trac.edgewall.org/>`_ Open Source Project
* `TracGuide <http://trac.edgewall.org/wiki/TracGuide>`_ - Built-in Documentation
* `TracFaq <http://trac.edgewall.org/wiki/TracFaq>`_ - Frequently Asked Questions
* `TracSupport <http://liblas.org/wiki/TracSupport>`_ - Trac Support
* `reStructuredText Support in Trac <http://bitten.edgewall.org/wiki/WikiRestructuredText>`_
Community
------------------------------------------------------------------------------
IRC
..............................................................................
Find the libLAS developers on IRC on #liblas at `Freenode`_.
Mailing Lists
..............................................................................
* liblas-devel - http://lists.osgeo.org/mailman/listinfo/liblas-devel
* liblas-commits - http://lists.osgeo.org/mailman/listinfo/liblas-commits
.. _`LIDAR`: http://en.wikipedia.org/wiki/LIDAR
.. _`IGSB`: http://www.igsb.uiowa.edu/
.. _`Martin Isenburg`: http://www.cs.unc.edu/~isenburg/
.. _`LAStools`: http://www.cs.unc.edu/~isenburg/lastools/
.. _`Martin Isenburg and Jonathan Shewchuk`: http://www.cs.unc.edu/~isenburg/lastools/
.. _`LAS Format`: http://www.lasformat.org/
.. _`LAS 1.2 Format Standard`: http://liblas.org/raw-attachment/wiki/WikiStart/asprs_las_format_v12.pdf
.. _`LAS 1.1 Format Standard`: http://liblas.org/raw-attachment/wiki/WikiStart/asprs_las_format_v11.pdf
.. _`LAS 1.0 Format Standard`: http://liblas.org/raw-attachment/wiki/WikiStart/asprs_las_format_v10.pdf
.. _`ASPRS Standards Committee`: http://www.asprs.org/society/committees/standards/lidar_exchange_format.html
.. _`Howard Butler`: http://hobu.biz
.. _`Mateusz Loskot`: http://mateusz.loskot.net
.. _`Phil Vachon`: http://www.geoscan.info
.. _`Frank Warmerdam`: http://home.gdal.org/warmerda/
.. _`BSD license`: http://www.opensource.org/licenses/bsd-license.php
.. _`LAS Format Elements`: http://liblas.org/wiki/LASElements
.. _`Tutorials`: http://liblas.org/wiki/Tutorial
.. _`Software`: http://liblas.org/wiki/Software
.. _`Resources`: http://liblas.org/wiki/Resources
.. _`License`: http://liblas.org/wiki/License
.. _`las2las`: http://liblas.org/browser/trunk/doc/las2las.txt
.. _`las2txt`: http://liblas.org/browser/trunk/doc/las2txt.txt
.. _`lasinfo`: http://liblas.org/browser/trunk/doc/lasinfo.txt
.. _`lasmerge`: http://liblas.org/browser/trunk/doc/lasmerge.txt
.. _`txt2las`: http://liblas.org/browser/trunk/doc/txt2las.txt
.. _`las2ogr`: http://liblas.org/browser/trunk/doc/las2ogr.txt
.. _`Freenode`: http://freenode.net
.. _`Library Design`: http://liblas.org/wiki/LibraryDesign
.. _`FOSS4G 2008`: http://liblas.org/raw-attachment/wiki/WikiStart/liblas_foss4g_2008.pdf
.. _`LAS C API`: http://liblas.org/doxygen/liblas_8h.html
.. _`LAS Doxygen Docs`: http://liblas.org/doxygen/
.. _`How To Release libLAS`: http://liblas.org/wiki/HowToRelease
.. _`libgeotiff`: http://www.remotesensing.org/geotiff/geotiff.html
.. _`7/28/2008`: http://lists.maptools.org/pipermail/geotiff/2008-July/000501.html
.. _`proj.4`: http://proj.maptools.org/
.. _`GDAL`: http://www.gdal.org
.. _`OSGeo4W`: http://wiki.osgeo.org/wiki/OSGeo_Win32_Installer
.. _`dotnetLibLAS API`: http://liblas.org/wiki/dotnetapi
.. _`FOSS4G 2008`: http://liblas.org/raw-attachment/wiki/WikiStart/liblas_foss4g_2008.pdf
.. _`ASPRS Workshop Demo`: http://liblas.org/raw-attachment/wiki/WikiStart/ASPRS-Workshop-NOAA-Demo.pdf
|
