getAVHRR: Find and download AVHRR NDVI Climate Data Record (CDR)

In rspatial/luna: Tools for Satellite Remote Sensing (Earth Observation) Data Processing

Find and download AVHRR NDVI Climate Data Record (CDR)

Description

Find and download AVHRR NDVI CDR global layers for a time period. The function returned is list of filenames that may have been downloaded.

Usage

getAVHRR(start_date, end_date, path, overwrite=FALSE, update=FALSE, download=TRUE, quiet=FALSE, ...)

Arguments

start_date	character. Start date for the data requested formatted yyyy-m-d
end_date	Character. end date for the data requested formatted yyyy-m-d
path	character. Path to download data to
overwrite	logical. If TRUE, existing files are overwritten
update	logical. If TRUE, existing records of AVHRR NDVI CDR will be updated
download	logical. Should the files be downloaded if not available on path?
quiet	logical. Should messages be printed to track the download progress?
...	Additional arguments that can be passed to download.file)

Value

Character vector of file names pointing to the downloaded files

Examples

  
## Not run: 
  start <- "2019-05-17" 
  end <- "2019-05-23"
  path <- tempdir()
  ff <- getAVHRR(start, end, path, download=FALSE)

## End(Not run)

rspatial/luna documentation built on Dec. 26, 2024, 12:33 a.m.