helper function for package to set metadata attributes of a dataset, used by scripts in /data-raw/

Together with the metadata_mapping script, this can be used annually to update the metadata for datasets in a package. It just makes it easier to set a few metadata attributes similarly for a number of data elements, for example, to add new or update existing attributes.

Usage

metadata_add(
  x,
  metadata = NULL,
  update_date_saved_in_package = TRUE,
  update_ejam_package_version = TRUE
)

Arguments

x: dataset (or any object) whose metadata (stored as attributes) you want to update or create EJAM, EJSCREEN, and other dataset versions and release dates are tracked in DESCRIPTION
metadata: optional - when omitted, it checks metadata_mapping using get_metadata_mapping(). Can provide a list of key=value attributes to add
update_date_saved_in_package: can set to FALSE to avoid changing this attribute
update_ejam_package_version: can set to FALSE to avoid changing this attribute

Value

returns x but with new or altered attributes

Details

to update only the ejam_package_version attribute of every data item:

metadata_update_attr()

This utility would be used in scripts in EJAM/data-raw/ to add metadata to objects like x before use_data(x, overwrite=T)

Note that by adding attributes, this function changes a vector so that is.vector() will no longer be true!

Examples

  # metadata_check() # internal function
  x <- data.frame(a=1:10,b=1001:1010)
  # x <- metadata_add(x) # internal function
  attributes(x)