get_previews: Get previews of records

In 16EAGLE/getSpatialData: Get different kinds of freely available spatial datasets

Get previews of records

Description

get_previews downloads and georeferences preview images per records and saves them to disk. File paths are added to the records data frame.

Usage

get_previews(
  records,
  dir_out = NULL,
  force = FALSE,
  as_sf = TRUE,
  ...,
  verbose = TRUE
)

Arguments

records	records data frame, containing one or multiple records (each represented by one row), as returned by get_records
dir_out	character, a directory, to which the downloaded file(s) should be saved. By default, these are saved to the archive directory defined with set_archive.
force	logical, whether to force download of files already existing or not.
as_sf	logical, whether records should be returned as sf data.frame or a simple data.frame. In both cases, spatial geometries are stored in column footprint.
...	additional, sensor-specific arguments: hub, character, Copernicus Hub selection for Sentinel queries. Either "auto" (default) to automatically select a suitable Copernicus hub depending on the selected products "dhus" to look for operational Open Hub records only, "s5p" to look for Sentinel-5P precursor pre-operational records only, "GNSS" to look for GNSS RINEX records only, or a valid API URL.
verbose	logical, whether to display details on the function's progress or output on the console.

Value

A data frame of records (as defined with argument records), extended by two columns: preview_file (character, path to georeferenced preview) and preview_file_jpg (character, path to preview JPG).

Note

To use this function, you must be logged in at the services required for your request. See the examples and login for details.

Author(s)

Jakob Schwalb-Willmann

16EAGLE/getSpatialData documentation built on June 9, 2022, 11:28 a.m.