getLevel2BPAIProfile: Get GEDI Plant Area Index (PAI) Profile (GEDI Level2B)

In rGEDI: NASA's Global Ecosystem Dynamics Investigation (GEDI) Data Visualization and Processing

Description

This function extracts the Plant Area Index (PAI) Profile from GEDI Level2B data.

Usage

getLevel2BPAIProfile(level2b)

Arguments

level2b

A GEDI Level2B object (output of readLevel2B function). An S4 object of class "gedi.level2b".

Details

Characteristics. Flag indicating likely invalid waveform (1=valid, 0=invalid).

• beam Beam identifie

• shot_number Shot number

• algorithmrun_flag The L2B algorithm is run if this flag is set to 1 indicating data have sufficient waveform fidelity for L2B to run

• l2b_quality_flag L2B quality flag

• delta_time Transmit time of the shot since Jan 1 00:00 2018

• lat_lowestmode Latitude of center of lowest mode

• lon_lowestmode Longitude of center of lowest mode

• elev_highestreturn Elevation of highest detected return relative to reference ellipsoid

• elev_lowestmode Elevation of center of lowest mode relative to reference ellipsoid

• height_lastbin Height of the last bin of the pgap_theta_z, relative to the ground

• pai_z Plant Area Index profile

Value

Returns an S4 object of class data.table-class containing the elevation and relative heights.

See Also

https://lpdaac.usgs.gov/products/gedi02_bv001/

Examples

# Specifying the path to GEDI level2B data (zip file)
outdir = tempdir()
level2B_fp_zip <- system.file("extdata",
                  "GEDI02_B_2019108080338_O01964_T05337_02_001_01_sub.zip",
                  package="rGEDI")

# Unzipping GEDI level2A data
level2Bpath <- unzip(level2B_fp_zip,exdir = outdir)

# Reading GEDI level2B data (h5 file)
level2b<-readLevel2B(level2Bpath=level2Bpath)

# Extracting GEDI Plant Area Index (PAI) Profile (GEDI Level2B)
level2BPAIProfile<-getLevel2BPAIProfile(level2b)
head(level2BPAIProfile)

close(level2b)

rGEDI documentation built on Jan. 19, 2021, 3:01 p.m.