Set and retrieve global options controlling the behaviour of certain functions in the package.
nhanesOptions(...)When retrieving an option, the value of the option, or
NULL if the option has not been set. When setting one
or more options, a list (invisibly) containing the previous
values (possibly NULL) of the options being set.
either one or more named arguments giving options to be
set (in the form key = value), or a single unnamed
character string to retrieve a setting.
Deepayan Sarkar <deepayan.sarkar@gmail.com>
The 'nhanesOptions()' function can be used in two forms, to set or get options. Options can be set using 'nhanesOptions(key1 = value1, key2 = value2)'. Options can be retrieved (one at a time) using 'nhanesOptions("key")'. When called with no arguments, all currently set options are returned as a list.
Options currently used in the package are 'use.db' (logical flag controlling whether a database should be used if available), and 'log.access', a logical flag that logs any attempted URL access by printing the URL).
nhanesOptions(foo = "bar")
nhanesOptions()
print(nhanesOptions(foo = NULL))
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