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FORTLS

Automatic Processing of Terrestrial-Based Technologies Point Cloud Data for Forestry Purposes

Process automation of point cloud data derived from terrestrial-based technologies such as Terrestrial Laser Scanner (TLS) or Simultaneous Localization and Mapping (SLAM). 'FORTLS' enables (i) detection of trees and estimation of tree-level attributes (e.g. diameters and heights), (ii) estimation of stand-level variables (e.g. density, basal area, mean and dominant height), (iii) computation of metrics related to important forest attributes estimated in Forest Inventories (FIs) at stand-level, and (iv) optimization of plot design for combining TLS data and field measured data. Documentation about 'FORTLS' is described in Molina-Valero et al. (2022, https://doi.org/10.1016/j.envsoft.2022.105337).

Install FORTLS 1.2.0 (Beta version)

Get the latest released version of FORTLS from GitHub (included in the devel branch)

remotes::install_github("Molina-Valero/FORTLS", ref = "devel", dependencies = TRUE)

Acknowledgements

FORTLS it is being developed at University of Santiago de Compostela.

Development of the FORTLS package is being possible thanks to the following projects:

  • Modelling the effects of intensity of perturbation on the structure of natural forests and their carbon stocks by using data from the National Forestry Inventory (AL2016-76769-C2-2-R) supported by the Spanish Ministry of Science and Innovation.
  • Development of the Galician continuous forest inventory (2020-CP031) supported by the Regional Government of Galicia.
  • Design of forest monitoring systems on a regional scale (ED431F 2020/02) supported by the Regional Government of Galicia.

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Install

install.packages('FORTLS')

Monthly Downloads

435

Version

1.1.0

License

GPL-3

Issues

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Maintainer

Juan Alberto Molina-Valero

Last Published

June 10th, 2022

Functions in FORTLS (1.1.0)

Rioja.data

Inventoried Plots Data for a Stand Case Study in La Rioja
correlations

Correlation Between Field Estimations and TLS Metrics
estimation.plot.size

Assess Consistency of Metrics for Simulated TLS Plots
FORTLS-package

FORTLS: Automatic Processing of Terrestrial-Based Technologies Point Cloud Data for Forestry Purposes
angle_count_cpp

Calculate dominant diameters and heights for simulations for angle-count plots.
k_tree_cpp

Calculate dominant diameters and heights for simulations for angle-count plots.
Rioja.simulations

Simulated Metrics and Variables for a Stand Case Study in La Rioja
height_perc_cpp

Calculate dominant diameters and heights for simulations for angle-count plots.
distance.sampling

Distance Sampling Methods for Correcting Occlusions Effects
fixed_area_cpp

Calculate dominant diameters and heights for simulations for angle-count plots.
metrics.variables

Compute Metrics and Variables for Terrestrial-Based Technologies Point Clouds
simulations

Compute Metrics and Variables for Simulated TLS and Field Plots
relative.bias

Relative Bias Between Field Estimations and TLS metrics
ncr_point_cloud_double

Calculate dominant diameters and heights for simulations for angle-count plots.
tree.detection.several.plots

Tree-Level Variables Estimation for Several Plots
tree.detection.multi.scan

Tree-Level Variables Estimation
weighted_mean_geom

Calculate weighted geometric mean.
normalize

Relative Coordinates and Density Reduction for Terrestrial-Based Technologies Point Clouds
optimize.plot.design

Optimize Plot Design Based on Optimal Correlations
weighted_mean_harm

Calculate weighted harmonic mean.
tree.detection.single.scan

Tree-Level Variables Estimation for TLS Single-Scan Approach
weighted_mean_arit

Calculate weighted arithmetic mean.
weighted_mean_sqrt

Calculate weighted quadratic mean.