getLandsat: Find and download Landsat products

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

Find and download Landsat products

Description

Find and download Landsat data for a specific product, area, and time period. The function returned is list of filenames that may have been downloaded.

Usage

getLandsat(product="Landsat_8_OLI_TIRS_C1", start_date, end_date, aoi, 
	download=FALSE, path, username, password, version="1", 
	limit=100000, server="AWS", overwrite=FALSE, ...)

Arguments

product	character. Supported products can be found using getProducts, currently limited to Landsat_8_OLI_TIRS_C1
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
aoi	numeric vector of four elements (minimum longitude, maximum longitude, minimum latitude, maximum latitude) encompassing the area of interest. Or a SpatExtent or Extent object, or any object from which an Extent can be extracted (see examples)
download	logical. If TRUE data will be downloaded unless it is present in the download directory
path	character. Path name indicating where to store the data
username	character. EROS user name (see Details)
password	character. EROS password (see Details)
version	character
limit	integer > 0
server	character. Either AWS (Landsat 8 only) or ERS. See Details
overwrite	logical. If TRUE, existing files are overwritten
...	Additional arguments. These can be product specific. See Details)

Details

The AWS (Amazon Web Services) server provides Landsat 8 data only. It does not require credentials (username and password).

The EROS service from the USGS also provides other Landsat products. To use for downloading data, you need to provide "ERS" credentials. If you do not have these, you can sign up for a free account here: https://ers.cr.usgs.gov/register

If no data is available between start_date and end_date, files for the closest dates are returned.

Value

character vector of file names pointing to the downloaded files (if download=TRUE)

See Also

getProducts, getNASA

Examples

  

product <- "Landsat_8_OLI_TIRS_C1"
sdate <- "2019-05-01" 
edate <- "2019-05-30"
area <- c(33, 34, -5, -4)
dir <- tempdir()
f <- getLandsat(product, start_date=sdate, end_date=edate,
            aoi=area, download=FALSE, path=dir)
            
# An example of ARD Tiles from ERS server
product <- "Landsat4-8_ARD_US_C1"
area <- c(-122.43, -121.50, 38.32, 38.91)
f1 <- getLandsat(product, start_date=sdate, end_date=edate,
            aoi=area, download=FALSE, path=dir, server="EROS")

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