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added note about zcta under postal codes generator section

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csobier
2016-03-18 14:11:59 -04:00
parent b3db80eeaf
commit f92191a69f
5 changed files with 10 additions and 9 deletions
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doc/geocoding_functions.md
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@@ -1,4 +1,4 @@
# Geocoding functions
# Geocoding Functions
The following geocoding functions are available, grouped by categories.
@@ -181,6 +181,8 @@ UPDATE {tablename} SET the_geom = cdb_geocode_namedplace_point({city_column}, {p
The following functions provide a postal code geocoding service that can be used to obtain points or polygon results. The postal code polygon geocoder covers the United States, France, Australia and Canada; a request for a different country will return an empty response.
**Note:** For the USA, US Census [Zip Code Tabulation Areas](https://www.census.gov/geo/reference/zctas.html) (ZCTA) are used to reference geocodes for USPS postal codes service areas.
### cdb_geocode_postalcode_polygon(_postal_code text, country_name text_)
#### Arguments
@@ -208,8 +210,6 @@ SELECT cdb_geocode_postalcode_polygon('11211', 'USA')
UPDATE {tablename} SET the_geom = cdb_geocode_postalcode_polygon({postal_code_column}, 'USA')
```
**Note:** For the USA, US Census ZCTAs are considered.
### cdb_geocode_postalcode_point(_code text, country_name text_)
#### Arguments