The cache directory stores previously downloaded files to access them
more quickly. The cache directory stores files in the same format as a
an argo_mirror(). By default, the cache is stored in a temporary
directory that is cleared when the session is restarted. This ensures
access to the latest index and files by default.
argo_cache_dir()
argo_update_global(max_global_cache_age = -Inf, all = TRUE, quiet = FALSE)
argo_update_data(max_data_cache_age = -Inf, quiet = FALSE)
argo_set_cache_dir(cache_dir)
with_argo_cache_dir(cache_dir, expr)
with_argo_example_cache(expr)
argo_cached(path)
argo_test_mirror()The maximum age in hours
to keep cached files. Use Inf to always use cached files; use -Inf
to always force download. You can set the default values of these using
options(argodata.max_global_cache_age = ...)
and/or options(argodata.max_data_cache_age = ...).
Should index files be downloaded even if they have not been previously downloaded?
Use FALSE to show which files are downloaded and for more
verbose error messages.
The maximum age in hours
to keep cached files. Use Inf to always use cached files; use -Inf
to always force download. You can set the default values of these using
options(argodata.max_global_cache_age = ...)
and/or options(argodata.max_data_cache_age = ...).
A writable directory in which downloaded files can be cached.
An expression to be evaluated with the specified
default cache_dir.
A path relative to the root directory of
argo_mirror() or argo_cache_dir(). This value can also
be a data.frame with a file column (e.g., a global index as
returned by argo_global_meta() and others).
argo_cache_dir(): The directory where cache files are located
argo_set_cache_dir(): The previously set cache directory
with_argo_cache_dir(), with_argo_example_cache(): The result of
expr.
argo_cached(): The file path to the cached version of the Argo file
(which may or may not exist).
argo_update_data(), argo_update_global(): The locations of the
updated files.