acs.lookup-class {acs} | R Documentation |
Class "acs.lookup"
Description
A new class to hold the results of calls to
acs.lookup
, typically for possible modification and then passing
to calls to acs.fetch
(using the "variable=" argument).
Objects from the Class
Objects can be created by calls of the
form new("acs.lookup", ...)
, but more typically will be created
as output from calls to acs.lookup
.
Slots
endyear
:Object of class
"numeric"
indicating the year of the census dataset; e.g., for data from the 2005-2009 ACS, endyear=2009span
:Object of class
"numeric"
indicating the span in years of the census dataset; e.g., for data from the 2005-2009 ACS, span=5. For decennial census datasets (SF1 and SF3), span = 0.args
:Object of class
"list"
containing the search terms used in the call toacs.lookup
, including some or all of: keyword, table.name, endyear, dataset, table.number, and case.sensitive.results
:Object of class
"data.frame"
containing character strings in four columns: variable.code, table.number, table.name, and variable.name.
Methods
- +
signature(e1 = "acs.lookup", e2 = "acs.lookup")
: used for combining two acs.lookup objects into one- c
signature(x = "acs.lookup")
: used for combining two acs.lookup objects into one- endyear
signature(object = "acs.lookup")
: returns endyear from acs.lookup object- [
signature(object = "acs.lookup")
: used for subsetting an acs.lookup object- results
signature(object = "acs.lookup")
: returns results (as dataframe) from acs.lookup object- span
signature(object = "acs.lookup")
: returns span from acs.lookup object
Author(s)
Ezra Haber Glenn eglenn@mit.edu
See Also
Examples
showClass("acs.lookup")