Access data stored online.

Access data stored online.

download_data(x, destfile = NULL)

Arguments

x	A string giving the name of the dataset to download. The name of any dataset listed here (without the extension).
destfile	a character string (or vector, see url) with the name where the downloaded file is saved. Tilde-expansion is performed.

Value

A dataset.

See also

utils::download.file()

Other datasets: datasets, example_path

Examples

# Not running CRAN checks (may take longer than the allowed run time limit)
# \donttest{
# Defaults to read data
# The first call is memoised
system.time(download_data("unique_id"))
#>    user  system elapsed 
#>   0.015   0.003   0.203 
# Subsequent calls use the memoised data, so takes no time
system.time(download_data("unique_id"))
#>    user  system elapsed 
#>       0       0       0 

download_data("unique_id")
#> # A tibble: 3 x 2
#>   table         column
#>   <chr>         <chr> 
#> 1 tree          TreeID
#> 2 stem          StemID
#> 3 ViewFullTable DBHID 

# Can download data to a destination file given by `destfile`
tmp <- tempfile()
download_data("unique_id", destfile = tmp)
load(tmp)
unique_id
#> # A tibble: 3 x 2
#>   table         column
#>   <chr>         <chr> 
#> 1 tree          TreeID
#> 2 stem          StemID
#> 3 ViewFullTable DBHID 

available_data <- "https://github.com/forestgeo/fgeo.data/tree/master/data"
if (interactive()) browseURL(available_data)
# }