gediDownload: Download GEDI data

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

Description

Download GEDI data from LP DAAC Data Pool. Users will need to enter their Earth Explore login Information for downloading the data.

Usage

gediDownload(
  filepath,
  outdir = NULL,
  overwrite = FALSE,
  buffer_size = 512,
  timeout = 10
)

Arguments

filepath	Vector object; path to the GEDI data
outdir	Vector object, output directory for downloading GEDI data, default tempdir()
overwrite	logical; overwrite file if they already exists in destination, default FALSE
buffer_size	integer; the size of download chunk in KB to hold in memory before writing to file, default 512.
timeout	integer; connection timeout in seconds.

Value

No return value on success, on failure it will stop()

References

Credits to Cole Krehbiel. Code adapted from <https://git.earthdata.nasa.gov/projects/LPDUR/repos/daac_data_download_r/browse/DAACDataDownload.R>

Examples

## Not run: 
# Set path to GEDI data
# herein we will only download xml metedata
filepath=c(paste0(
                 "https://e4ftl01.cr.usgs.gov/GEDI/GEDI02_B.001",
                 "/2019.04.18/GEDI02_B_2019108032534_O01961_T03911_02_001_01.h5.xml"
                 ),
          paste0("https://e4ftl01.cr.usgs.gov/GEDI/GEDI02_B.001",
                 "/2019.04.18/GEDI02_B_2019108045815_O01962_T01066_02_001_01.h5.xml"
                )
         )

# Set dir to download files to
outdir=tempdir()

# Create .netrc file
netrc = file.path(outdir, ".netrc")
netrc_conn <- file(netrc)

writeLines(c("machine urs.earthdata.nasa.gov",
            sprintf("login %s", Sys.getenv("NASA_USER")),
            sprintf("password %s", Sys.getenv("NASA_PASSWORD"))
), netrc_conn)

close(netrc_conn)

#' Downloading GEDI data
gediDownload(filepath,outdir)

## End(Not run)

rGEDI documentation built on Jan. 21, 2021, 1:06 a.m.