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Utilities to download and manage files

Source: R/util_download.R
util_download.Rd

In order to maintain a clean set of raw data files, these functions help with retrieving the raw data from an online source and caching it.

Usage

download_and_verify(
  df_in,
  target_dir = getOption("evoland.cachedir"),
  overwrite = FALSE
)

Arguments

df_in

Data frame with 'url' and 'md5sum' columns. This can be retrieved from pred_meta_t or intrv_meta_t.

target_dir

Target directory for downloads, defaults to option evoland.cachedir

overwrite

Whether to overwrite existing files (default: FALSE)

Value

df_out, Same as df_in but with added column "local_filename", the full path of which can be constructed

Functions

  • download_and_verify(): Download a set of files and check their integrity against their md5 checksum