This function downloads SMAP data in HDF5 format.
download_smap(files, directory = NULL, overwrite = TRUE, verbose = TRUE)
A data.frame
produced by find_smap()
that specifies data files to download.
A local directory path in which to save data, specified as a
character string. If left as NULL
, data are stored in a user's cache
directory.
TRUE or FALSE: should existing data files be overwritten?
TRUE or FALSE: should messages be printed to indicate that files are being downloaded?
Returns a data.frame
that appends a column called
local_dir
to the input data frame, which consists of a character
vector specifying the local directory containing the downloaded files.
This function requires a username and password from NASA's Earthdata portal.
If you have an Earthdata username and password, pass them in using the
set_smap_credentials()
function.
If you do not yet have a username and password, register for one here: https://urs.earthdata.nasa.gov/
if (FALSE) {
files <- find_smap(id = "SPL4SMGP", dates = "2015-03-31", version = 4)
# files[1, ] refers to the first available data file
downloads <- download_smap(files[1, ])
}