Description Usage Arguments Value Author(s) References Examples
Create or update a local user-defined subset of the global MODIS grid data archive. Based on user-specific parameters the function checks in the local archive for available data and downloads missing data from the online MODIS data pool. When run in a schedule job, the function manage the continuous update of the local MODIS data archive.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 |
product |
|
HdfName |
|
begin, end |
|
tileH, tileV |
|
extent |
See Details in |
collection |
Desired MODIS product collection as |
checkIntegrity |
|
forceDownload |
|
... |
Further arguments passed to |
An invisible vector of downloaded data and paths.
Matteo Mattiuzzi
MODIS data is currently available from the online data pools at
NASA Land Processes Distributed Active Archive Center (LP DAAC),
Level-1 and Atmosphere Archive & Distribution System (LAADS), and
National Snow & Ice Data Center (NSIDC).
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 | ## Not run:
# One or more specific file (no regular erpression allowed here)
a <- getHdf(HdfName = c("MYD11A1.A2009001.h18v04.006.2015363221538.hdf",
"MYD11A1.A2009009.h18v04.006.2015364055036.hdf",
"MYD11A1.A2009017.h18v04.006.2015364115403.hdf"))
a
# Get all MODIS Terra and Aqua M*D11A1 data from the past 30 days
# (can be run in a scheduled job for regular archive update)
b1 <- getHdf(product = "M.D13A2", begin = Sys.Date() - 30,
tileH = 18:19, tileV = 4)
b1
# Same tiles with a 'list' extent
Austria <- extent(9.2, 17.47, 46.12, 49.3)
b2 <- getHdf(product = "MOD13A2", begin = "2020001", end = "2020031", extent = Austria)
b2
# Using country boarders from 'mapdata' package
c <- getHdf(product = "MOD13A2", begin = "2016180", end = "2016210",
extent = "Luxembourg")
c
# Interactive selection of spatial extent, see getTile()
d <- getHdf(product = "MOD13A2", begin = "2016180", end = "2016210")
d
## End(Not run)
|
Add the following code to your website.
For more information on customizing the embed code, read Embedding Snippets.