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update FAQ
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hobu committed Jul 30, 2014
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Expand Up @@ -16,13 +16,29 @@ reading and writing support. Additionally, a number of organizations also use
libLAS for a variety of tasks. See `here
<http://trac.liblas.org/wiki/WhoUsesLibLAS>`__ for more details.

What is libLAS's development status?
--------------------------------------------------------------------------------

libLAS is in a rather dormant period and is essentially in maintenance-only
mode at this time. It is suggested you build atop `LASlib`_ if you are starting
new development.

.. _`LASlib`: http://www.cs.unc.edu/~isenburg/lastools/

What software supports ASPRS LAS Format?
--------------------------------------------------------------------------------

There is a number of geospatial software packages that support read/write of
ASPRS LAS Format. Popular software is listed on the `Software
<http://trac.liblas.org/wiki/Software>`__ Wiki page.

Where did libLAS' Python support go?
--------------------------------------------------------------------------------

http://www.laspy.org
suppors LAS 1.0-LAS 1.4, and it is suggested you use that if you want
full Python support. libLAS' Python support was poorly implemented and not
as featureful as laspy. laspy is a new, more complete effort.

How does ASPRS LAS Format handle endianness?
--------------------------------------------------------------------------------
Expand All @@ -42,11 +58,11 @@ stabilizes and there are enough softwares and implementations out there to
base the work on. The LAS 2.0 specification is a whole-scale rewrite of the
LAS specification, and its implementation will be challenging within libLAS.

Does libLAS support LAS 1.3?
Does libLAS support LAS 1.3 or LAS 1.4?
--------------------------------------------------------------------------------

Not at this time. Waveform data and software models to support waveform models
within libLAS have not yet been developed. libLAS 1.6 supports reading point
within libLAS have not yet been developed. libLAS 1.6+ supports reading point
data from LAS 1.3 files, but waveform data is not supported.

How can I remove points classified as ground from LAS files?
Expand All @@ -58,21 +74,3 @@ points removed::

las2las input.las output.las --drop-classes 2

How can I get past the linking error when building svn trunk on OS X 10.4?
--------------------------------------------------------------------------------

::

ld: multiple definitions of symbol ___divdi3
/usr/lib/gcc/powerpc-apple-darwin8/4.0.1/libgcc.a(_divdi3.o) private external definition of ___divdi3 in section (__TEXT,__text)
/usr/lib/gcc/powerpc-apple-darwin8/4.0.1/../../../libgcc_s.10.4.dylib(_divdi3_s.o) definition of ___divdi3
ld: multiple definitions of symbol ___udivdi3
/usr/lib/gcc/powerpc-apple-darwin8/4.0.1/libgcc.a(_udivdi3.o) private external definition of ___udivdi3 in section (__TEXT,__text)
/usr/lib/gcc/powerpc-apple-darwin8/4.0.1/../../../libgcc_s.10.4.dylib(_udivdi3_s.o) definition of ___udivdi3
ld: multiple definitions of symbol ___umoddi3
/usr/lib/gcc/powerpc-apple-darwin8/4.0.1/libgcc.a(_umoddi3.o) private external definition of ___umoddi3 in section (__TEXT,__text)
/usr/lib/gcc/powerpc-apple-darwin8/4.0.1/../../../libgcc_s.10.4.dylib(_umoddi3_s.o) definition of ___umoddi3
/usr/bin/libtool: internal link edit command failed

OS X 10.4's XCode has an extremely old automake/autoconf/libtool stack, and without upgrading those,
you'll have to stick to building libLAS from releases.

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