swathInfo: Retrieve Information from MODIS Swath Products

In environmentalinformatics-marburg/reset: Remote Sensing-Based Evapotranspiration

Description

Set of helper functions to retrieve information from MODIS swath products.

Usage

getSwathDateTime(x, format, ...)

getSwathDate(x, as_date = TRUE)

getSwathTime(x)

Arguments

x	character, one or multiple .hdf filename(s).
format	character, target format passed on to strftime.
...	Further arguments passed on to underlying functions (see Value).
as_date	logical, determines whether or not to return a Date object.

Value

• getSwathDateTime: if format is missing, a POSIXlt object created from strptime; else a character object from strftime.

• getSwathDate: if as_date = TRUE (default), a Date object created from as.Date; else a character object with a leading 'A'.

• getSwathTime: a character object in the form of '%H%S'.

Functions

• getSwathDateTime: Return MODIS Swath scan date and time

• getSwathDate: Return MODIS Swath scan date

• getSwathTime: Return MODIS Swath scan time

Examples

x <- "MOD05_L2.A2013001.0835.006.2015064204640.hdf"

getSwathDate(x)                  # scan date as 'Date'
getSwathDate(x, as_date = FALSE) # scan date as 'character'

getSwathTime(x) # scan time

getSwathDateTime(x)                            # scan date and time as 'POSIXlt'
getSwathDateTime(x, format = "%Y-%m-%d %H:%S") # scan date and time as 'character'

environmentalinformatics-marburg/reset documentation built on May 16, 2019, 7:54 a.m.