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Using nflreadr in packages

Re-exporting nflreadr functions

You can re-export nflreadr functions in your package by using the following roxygen template:

#' @inherit nflreadr::load_nextgen_stats
#' @export
# Need to add own examples if the function name is different
#' @examples
#' load_ng_stats(2020)
load_ng_stats <- nflreadr::load_nextgen_stats

Using progressr with from_url functions

The from_url family of functions can be adapted with the progressively() function decorator to signal progress. Here’s an example, adapted from the load_rosters() source code:

load_rosters <- function(seasons = 1999:2020){

  # Create a progressor function inside your function that knows how many "steps" there will be
  p <- progressr::progressor(steps = length(seasons)) 

  # Form the URLs to pass into rds_from_url
  urls <- paste0(
    "https://github.com/nflverse/nflverse-rosters/",
    "raw/master/data/seasons/roster_",
    seasons, 
    ".rds")

  # Use `progressively()` to wrap the existing function rds_from_url and 
  # call the `p()` progressor function as a signal immediately after each iteration
  
  out <- purrr::map_dfr(urls, progressively(rds_from_url,p))
  
  return(out)
}

This will cause p() to execute once for each rds_from_url call, effectively “signalling” progress.

In order to receive progress updates, the user must wrap the function (load_rosters, in this case) with progressr::with_progress() as shown here:

progressr::with_progress(load_rosters(2010:2020))

For more information, please see the progressr documentation.

These binaries (installable software) and packages are in development.
They may not be fully stable and should be used with caution. We make no claims about them.