Clip GEDI Level1B data by geometry
This function clips GEDI Level1B (geolocated waveforms) data within a given bounding geometry
clipLevel1BGeometry(level1b, polygon_spdf, output = "", split_by = NULL)
level1b |
A GEDI Level1B object (output of |
polygon_spdf |
Polygon. An object of class |
output |
Optional character path where to save the new hdf5file. The default stores a temporary file only. |
split_by |
Polygon id. If defined, GEDI data will be clipped by each polygon using the attribute specified by |
Returns a list of S4 object of class "gedi.level1b" containing clipped GEDI Level1B data.
outdir = tempdir()
# Specifying the path to GEDI level1B data (zip file)
level1B_fp_zip <- system.file("extdata",
"GEDI01_B_2019108080338_O01964_T05337_02_003_01_sub.zip",
package="rGEDI")
# Unzipping GEDI level1B data
level1Bpath <- unzip(level1B_fp_zip,exdir = outdir)
# Reading GEDI level1B data (h5 file)
level1b<-readLevel1B(level1Bpath=level1Bpath)
# 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)
# Spepecifing output file and path
output<-file.path(outdir,"GEDI01_B_2019108080338_O01964_T05337_02_003_01_clip")
# clipping GEDI Level1B data by extent boundary box
level1b_clip <- clipLevel1BGeometry(level1b, polygon_spdf = polygon_spdf,
output=output,
split_by="id")
close(level1b)
lapply(level1b_clip, close)Please choose more modern alternatives, such as Google Chrome or Mozilla Firefox.