This function is a wrapper for the Measure.getMeasuresByYearState() method of the PVS API Measure class which grabs a list of state ballot measures in a given year. 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.
a character string or list of character strings with the year(s)
a character string or list of character strings with the state ID(s) (see references for details)
A data frame with a row for each ballot measure and columns with the following variables describing the ballot measure:
Ulrich Matter <ulrich.matter-at-unibas.ch>
Use State.getStateIDs() to get a list of state IDs.
See also: Matter U, Stutzer A (2015) pvsR: An Open Source Interface to Big Data on the American Political Sphere. PLoS ONE 10(7): e0130501. doi: 10.1371/journal.pone.0130501
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# First, make sure your personal PVS API key is saved as an option # (options("pvs.key" = "yourkey")) or in the pvs.key variable: ## Not run: pvs.key <- "yourkey" # get a list of ballot measures for a certain state and year ## Not run: measures <- Measure.getMeasuresByYearState(list(2010,2012),"FL") ## Not run: measures
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