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forestr (version 2.0.2)

Ecosystem and Canopy Structural Complexity Metrics from LiDAR

Description

Provides a toolkit for calculating forest and canopy structural complexity metrics from terrestrial LiDAR (light detection and ranging). References: Atkins et al. 2018 ; Hardiman et al. 2013 ; Parker et al. 2004 .

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Install

install.packages('forestr')

Monthly Downloads

189

Version

2.0.2

License

GPL-3

Issues

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Maintainer

Jeff Atkins

Last Published

April 14th, 2020

Functions in forestr (2.0.2)

adjust_by_user

Adjust by user height
calc_tls_mean_leaf_ht

Process single PCL transects.
calc_enl

Calculate rugosity and other higher level complexity metrics
normalize_pcl

Normalize PCL data based on light saturation and attenuation
calc_tls_csc

Calculates rumple
make_matrix

Make PCL matrix for higher level complexity measures
write_summary_matrix_to_csv

Writes csc metrics and output variables to .csv
osbs

PCL transect from Ordway-Swisher Biological Station, Florida, US.
make_matrix_part_one

Make PCL matrix part one
plot_hit_grid

Plots LiDAR hit grids of VAI
pcl_vai

a data frame of vegetation area index (VAI)
calc_intensity

Intensity Statistics
calc_gap_fraction

Calculate gap fraction
pcl_adjusted

a data frame LiDAR returns that have been split to x and z position and coded and adjusted for user height
calc_rugosity

Calculate rugosity and other higher level complexity metrics
pcl_matrix

a LiDAR hit density by x, z position
pcl_coded

a data frame LiDAR returns that have been split to x and z position and coded
pcl_split

a data frame LiDAR returns that have been split to x and z position
pcl_summary

summary matrix
write_hit_matrix_to_csv

Writes hit matrix to csv for further analysis
write_pcl_to_csv

Writes csc metrics and output variables to .csv
pcl_norm

a data frame of normalized LiDAR return density
process_pcl

Process single PCL transects.
get_transect_length

Get transect length of PCL transect (in meters)
calc_rumple

Calculates rumple
pcl_diagnostic_plot

PCL diagnostic plot
process_tls

Process single PCL transects.
csc_metrics

Cover and sky fraction estimates
pcl_data

PCL transect from the University of Virginia
split_transects_from_pcl

Split transects from PCL
red_pine

PCL transect from a red pine plantation in Northern Michigan, US.
calc_vai

Calculate vegetation area index (VAI) from normalized PCL data matrix
code_hits

Code hits
plot_pavd

Graphs Plant Area Volume Density Profiles
process_multi_pcl

Process multiplie PCL transects.
make_summary_matrix

Creates summary matrix
make_matrix_part_two

Make PCL matrix part two
read_pcl

read_pcl imports PCL or portable canopy LiDAR files into the workspace and formats them.
read_pcl_multi

read_pcl_multi imports PCL or portable canopy LiDAR files into the workspace and formats them.