Wrapper for the U.S. Census Batch Geocoder

This function allows you to submit batch geocoders

getTracts(data, unique_id, address, city, state, postalcode)

Arguments

data	The data to be geocoded
unique_id	The unique identifier required for each row in the data
address	The street address to be geocoded
city	The city for the address
state	The state for the address
postalcode	The postal code for the address