Lidar_platform

Installation

1. Install plateforme_lidar module

add lidar_platform path to the PYTHONPATH

2. Install required modules

With miniconda (or anaconda but the first one is preferred)

conda install -c conda-forge laspy

https://laspy.readthedocs.io/en/latest/installation.html

conda install -c conda-forge gdal

https://gdal.org/download.html#

conda install -c conda-forge scikit-learn

And also numpy, matplotlib, sklearn

or with pip

pip install -r .\plateforme_lidar\requirements.txt

3. Useful software

• Make sure that you have downloaded CloudCompare to use tools.cloudcompare.py
  Add path to cloudcompare.exe in lidar_plateform.utils.py (dictionnary QUERY_0)
  See more : http://www.cloudcompare.org/
• Download the Adaptive Multigrid Solvers tools, especially PoissonRecon.exe and add path to PoissonRecon.exe to use it in lidar_platform.utils.py (dictionary QUERY_0)
  See more: https://www.cs.jhu.edu/~misha/Code/PoissonRecon/Version13.8/
• In case of failure during the gdal installation, it is possible to try to install it using OSGeo4W
  You will have to add the root path to OSGEO4W (containing OSGeo4W.bat) to your environment variables.
  See more : https://trac.osgeo.org/osgeo4w/

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Basic Usage

Reading / Writing LAS file

>> > import lidar_platform as lp
>> > workspace = "D:/yourDirectory/"
>> > dataset = pl.lastools.read(workspace + "inFile.laz")
>> > intensity = dataset.intensity
>> > numberOfPoints = len(data)
...
>> > addFieldList = [{"name": "addField1", "type": "float32", "data": extraField1},
                     {"name": "addField2", "type": "uint8", "data": extraField2}]
>> > pl.lastools.WriteLAS(workspace + "outFile.laz", dataset, extraFields=addFieldList)

Reading, viewing and filtering fwf LAS file

>> > from plateforme_lidar import pl
>> > workspace = "D:/yourDirectory/"
>> > dataset = lastools.read(workspace + "inFile_fwf.laz")
>> > waveforms = lastools.read_wdp(workspace + "inFile_fwf.laz", dataset)
>> > indexPoint = 99
>> > pl.lasfwf.viewerFWF(pl.lastools.filter_las(dataset, indexPoint), waveforms[indexPoint])
>> > listPoints = [12, 102, 30]
>> > dataExtract = pl.lastools.filter_las(dataset, listPoints)
>> > waveExtract = pl.lastools.filter_wdp(waveforms, listPoints)
>> > pl.lastools.update_byte_offset(dataExtract, waveExtract)
>> > pl.lastools.WriteLAS(workspace + "outFile_fwf.laz",
                          dataExtract, format_id=4, waveforms=waveExtract)