extract_time_from_MODISfn: Extract the year, day, and hour from a MODIS filename
In modiscloud: R tools for processing Level 2 Cloud Mask products from MODIS

Description Usage Arguments Details Value Author(s) References See Also Examples

The filenames of MODIS images contain the following date information: MOD35_L2.Ayyyyddd.hhhh.etc.

1	extract_time_from_MODISfn(fn)

`fn`	The MODIS filename of interest

MODLAND Level 2 products
ESDT.AYYYYDDD.HHMM.CCC.YYYYDDDHHMMSS.hdf

ESDT = Earth Science Data Type name (e.g., MOD14)
YYYYDDD = MODIS acquisition year and Julian day
HHMM = MODIS acquisition UTC time
CCC = Collection number
YYYYDDDHHMMSS = Processing Year, Julian day and UTC Time
hdf = Suffix denoting HDF file

DDD is the day of the year, from 001 to 365 (or 366 for leap years)

newdate A list with three items: $month, $day, $year

Nicholas J. Matzke matzke@berkeley.edu

NASA (2001). "MODLAND Product Filename Convention." <URL: http://landweb.nascom.nasa.gov/cgi-bin/QA_WWW/newPage.cgi?fileName=hdf_filename>.

dates_from_fileslist

http://landweb.nascom.nasa.gov/cgi-bin/QA_WWW/newPage.cgi?fileName=hdf_filename

yearday_to_date(year=2012, day=364)
# $month
# [1] 12
#
# $day
# [1] 29
#
# $year
# [1] 2008

fn = "MOD03.A2008001.0400.005.2010216170200.hdf"
extract_time_from_MODISfn(fn)