Description Usage Arguments Details Value Examples
View source: R/genMissionGetDates.R
lsGetDates
reads the official name of a Landsat-7 or Landsat-8 image
and returns the capturing date, as a Date
class object.
1 | lsGetDates(str, ...)
|
str |
the full path(s) or official name(s) of the Landsat-7 or Landsat-8 images from which the capturing date is retrieved. |
... |
arguments for nested functions:
|
The function works with file names (or their paths) regardless of their
extension. The function accepts more than on file path, which can be passed
as a vector of character
s. Dates are returned as 'YYYY-mm-dd
' by
default. If another format is required, it can be modified through the
argument format
.
a Date
class object with the date of the Landsat image or character
class,
if the format
argument is used.
1 2 3 4 5 6 7 8 9 10 11 | # getting the capturing date from the name of a Landsat-8 image
file.ls8 <- "LC82000312017010LGN01.tar.gz"
date.ls8 <- lsGetDates(file.ls8)
print(date.ls8)
print(format(date.ls8, "%Y%j"))
# getting the capturing date from the name of a Landsat-7 and a Landsat-8
# image
file.ls7 <- c("LE72330822017009ASN01")
date.ls7 <- lsGetDates(file.ls7)
print(date.ls7)
|
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