genGetDates: Return the capturing date from the name of a raster layer

In RGISTools: Handling Multiplatform Satellite Images

Description

genGetDates extracts the date of one or several images when the name of the layer includes the date in the "YYYYJJJ" format.

Usage

genGetDates(str, ...)

Arguments

str	character containing the date as "YYYYJJJ", where Y and J are year and julian day digits.
...	arguments for nested functions: format the format of the date being returned.

Details

The function reads a date from a character class object in year-julian ("YYYYJJJ") format and returns a Date class object.

Value

a Date class object with the date of the image or character class, if format argument is used.

Examples

img <- matrix(1:16, ncol = 4, byrow = TRUE)
r <- raster(img)
names(r) <- c("RandomImage_2018034")

spplot(r)
genGetDates(names(r), format = "%Y%j")

RGISTools documentation built on July 2, 2020, 3:58 a.m.