clipLevel2BPAVDProfileGeometry: Clip GEDI Plant Area Volume Density profile by geometry

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

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