[GRASS-dev] r.in.lidar: read multiple LAS files in one run

[Newcomb, Doug]

Vaclav,

I cannot wait to try this with multiple files at the 4.2 point las 1.2
limit! I can live with slow, just concerned about the memory demands
working with larger areas.

Thank you very much!

Doug







On Mon, Oct 26, 2015 at 11:28 AM, Vaclav Petras <wenzeslaus at gmail.com>
wrote:

> Hi all,
>
> r.in.lidar in trunk (r66601) can now read multiple LAS files specified in
> a text file (similarly to what e.g. r.colors supports for raster maps). It
> is nothing fancy, no indexing or something, but you can bin point from
> several tiles without any edge effects. It is not particularly fast either,
> but it is not worse than the original code.
>
> Here is an example with custom resolution and extent derived from the data:
>
> r.in.lidar file=list.txt output=raster method=mean -e res=30 zrange=-1,200
>
> The file list.txt contains something like:
>
> /home/johnuser/data/tile_55.las
> /home/johnuser/data/tile_56.las
> /home/johnuser/data/tile_57.las
>
> A major refactoring of the code (r66593-r66596) was necessary for smooth
> implementation. I did my best to test different combination of parameters
> with comparison to original results, but I was not able to create an
> automated test partially for the lack of standardized input data. More
> testing appreciated.
>
> The options and tabs were reorganized to accommodate new inputs, but the
> documentation is missing.
>
> Let me know what you think.
>
> Vaclav
>
>
> https://grass.osgeo.org/grass71/manuals/r.in.lidar.html
> https://trac.osgeo.org/grass/changeset/66601
> https://trac.osgeo.org/grass/changeset/66593
> https://trac.osgeo.org/grass/changeset/66594
> https://trac.osgeo.org/grass/changeset/66595
> https://trac.osgeo.org/grass/changeset/66596
>
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> grass-dev at lists.osgeo.org
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>



-- 
Doug Newcomb
USFWS
Raleigh, NC
919-856-4520 ext. 14 doug_newcomb at fws.gov
---------------------------------------------------------------------------------------------------------
The opinions I express are my own and are not representative of the
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