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rGEDI

clipLevel2BPAVDProfileGeometry

Clip GEDI Plant Area Volume Density profile by geometry

Description

This function clips GEDI level2B derived Plant Area Index profile within a given geometry

Usage

clipLevel2BPAVDProfileGeometry(level2BPAVDProfile, polygon_spdf, split_by)

Arguments

level2BPAVDProfile

A GEDI Level2B object (output of getLevel2BPAIProfile function). An S4 object of class "gedi.level2b".
polygon_spdf

Polygon. An object of class SpatialPolygonsDataFrame-class, which can be loaded as an ESRI shapefile using raster::shapefile() function in the shapefile package.
split_by

Polygon id. If defined, GEDI data will be clipped by each polygon using the attribute specified by split_by from the attribute table.

Value

Returns an S4 object of class data.table-class containing the Plant Area Volume Density profile data.

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 Volume Density profile
level2BPAVDProfile<-getLevel2BPAVDProfile(level2b)

# Specifying the path to shapefile
polygon_filepath <- system.file("extdata", "stands_cerrado.shp", package="rGEDI")

# Reading shapefile as SpatialPolygonsDataFrame object
library(raster)
polygon_spdf<-shapefile(polygon_filepath)

# Clipping GEDI Plant Area Volume Density profile by geometry
level2BPAVDProfile_clip <- clipLevel2BPAVDProfileGeometry(
                                                         level2BPAVDProfile,
                                                         polygon_spdf,
                                                         split_by="id")

close(level2b)
rGEDI

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

v0.1.11
GPL-3
Authors
Carlos Alberto Silva [aut, cre, cph], Caio Hamamura [aut, cph], Ruben Valbuena [aut, ctb], Steven Hancock [aut, ctb], Adrian Cardil [aut, ctb], Eben North Broadbent [aut, ctb], Danilo Roberti Alves de Almeida [aut, ctb], Celso H. L. Silva Junior [aut, ctb], Carine Klauberg [aut, ctb], Burton Garbow [cph] (Is the author of the MINPACK-1 Least Squares Fitting Library), Kenneth Hillstrom [cph] (Is the author of the MINPACK-1 Least Squares Fitting Library), Jorge More [cph] (Is the author of the MINPACK-1 Least Squares Fitting Library), Craig Markwardt [cph] (Is the author of the enhanced MINPACK-1 Least Squares Fitting Library)
Initial release

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