Votes.getCategories: Get a list of categories that contain released bills according to year and state
Description
This function is a wrapper for the Votes.getCategories()
method of the PVS API Votes class which dumps categories
that contain released bills according to year and state.
The function sends a request with this method to the PVS
API for all years and state IDs given as a function
input, extracts the XML values from the returned XML
file(s) and returns them arranged in one data frame.
Usage
Votes.getCategories(year, stateId="NA")
Arguments
year
a character string or list of character
strings with the year(s)
stateId
(optional) a character string or list of
character strings with the state ID(s) (default: "NA",
for "National") (see references for details)
Value
A data frame with a row for each category and columns
with variables describing the category. The returned data
frame contains a row for each category and columns with
the following variables describing the category:
categories.category*.categoryId,
categories.category*.name.
References
http://api.votesmart.org/docs/Votes.html
Use
State.getStateIDs() to get a list of state IDs.
# First, make sure your personal PVS API key is saved as character string in the pvs.key variable:pvs.key <- "yourkey"# get a list of categoriescategories <- Votes.getCategories(2012)
categories