Downloads and caches the df_coordinates_final dataset if it is not already cached locally.
This function ensures that the dataset is downloaded only once and loaded into memory
without cluttering the global environment. The dataset is stored in a package-specific
cache directory and retrieved efficiently for subsequent uses.
Details
The dataset is downloaded from GitHub
The file is cached in a directory specific to the package, which is determined
using R_user_dir. If the dataset is already cached, it will
be loaded directly from the cache instead of downloading again.
Examples
# \donttest{
df <- fetch_df_coordinates()
#> ggpop: downloading coordinate data from GitHub (~2 MB) and caching it locally.
#> This happens once. Future calls will load from cache.
head(df)
#> X pos x1 y1 size
#> 1 1 1 0.0000000 0.0000000 1
#> 2 2 1 -0.2622589 -0.6895521 10
#> 3 3 2 0.2622589 -0.6895521 10
#> 4 4 3 -0.6542075 -0.3409904 10
#> 5 5 4 0.6542075 -0.3409904 10
#> 6 6 5 0.0000000 -0.2353064 10
# }