The US Census Bureau provides 5-year summary file data from the American Community Survey in sequence files on their FTP site.
This function reports which sequence files contain the specified tables. Used by get.acs()
Usage
which.seqfiles(tables, lookup.acs, end.year = acsdefaultendyearhere_func())Arguments
- tables
character vector, required. Defines which ACS table(s) to check, such as 'B01001'
- lookup.acs
data.frame, optional (if not provided then it is downloaded from Census). Specifies what variables are in which tables and which tables are in which sequence files on the FTP site.
- end.year
Character element, optional. Defines end year for 5-year dataset. Valid years are limited. Ignored if lookup.acs is specified, however. If they imply different years, the function stops with an error message.
Value
Returns a vector of one or more numbers stored as characters, each defining one sequence file, such as "0001".
See also
get.acs() and acs::acs.lookup() from the acs package, which does something related but is more flexible & robust. Also see get.acs() which uses this.