This tutorial presents a workflow to optimize the coregistration of field measurements of tree positions with Airborne Laser Scanning (ALS) data. A precise coregistration is a necessary to avoid border effects leading to errors in models, e.g. when calibrating area-based models for the prediction of forest parameters.

The following files are provided:

• Rmarkdown source,
• Field plot coregistration tutorial in html,
• a bibliography file
• datasets required to run the source code are also available on the repository.

Change log

• July 19, 2022: checked with new version of lidaRtRee
• May 24, 2022: switch to terra and sf to comply with new version of lidR and lidaRtRee
• Dec. 27, 2021: future.apply package used for parallelization
• Aug 3, 2021: updated to comply with lidaRtRee 3.1.0
• Jan 2021: updated to comply with lidR 3.1.0 and lidaRtRee 3.0.0
• Oct 2020: checked compatibility with lidR 3.0.3
• May 2020: added edge detection
• Feb 2019: updated for compatibility with package lidR 2.0.0 and lidaRtRee 2.0.0
• June 2018: first version