public Geocode <Census> GeocodeAddress
(string street, string city = "",
string state = "", string zip = "")
{
Census json = null;
var geocode = new Geocode <Census>();
HttpResponseMessage response = geocode.GetResponse
(this.apiUrl, this.GetUrlParameters(street, city, state, zip));
using (response)
{
if (response.IsSuccessStatusCode)
{
var data = response.Content.ReadAsStringAsync().Result;
json = JsonConvert.DeserializeObject <Census>(data);
if (json != null)
{
geocode.Latitude = json.result.addressMatches[0].coordinates.x;
geocode.Longitude =
json.result.addressMatches[0].coordinates.y;
geocode.CongressionalDistrictName =
json.result.addressMatches[0].geographies.congressionalDistricts[0].NAME;
}
}
return(geocode);
}
}
private List <CENSUS_LOCATION> buildGeocode(Patient iPatient)
{
List <CENSUS_LOCATION> result = new List <CENSUS_LOCATION>();
foreach (var add in iPatient.Address)
{
CENSUS_LOCATION new_location = new CENSUS_LOCATION();
string address = "";
string street = "";
string city = "";
string state = "";
string postal_code = "";
int c = 0;
foreach (var line in add.Line)
{
if (c == 0)
{
street = line;
}
address = address + line + " ";
c++;
}
address = address + ", " + add.City + ", " + add.State + " " + add.PostalCode;
city = add.City;
state = add.State;
postal_code = add.PostalCode;
// use US Gov Census REST API to get location
Uri geocoder = new Uri("https://geocoding.geo.census.gov");
var client = new RestClient();
client.BaseUrl = geocoder;
// use US Gov Census API to get Census Tract
try
{
var geographies_request = new RestRequest();
geographies_request.Resource = "/geocoder/geographies/address?street=" + street + "&city=" + city + "&state=" + state + "&benchmark=Public_AR_Census2010&vintage=Census2010_Census2010&layer=14" + "&format=json";
IRestResponse geographies_response = client.Execute(geographies_request);
if (geographies_response.IsSuccessful)
{
Census json = null;
json = JsonConvert.DeserializeObject <Census>(geographies_response.Content);
// fill in CENSUS_LOCATION
new_location.PERSON_ID = iPatient.Id;
if (add.Period != null && add.Period.StartElement.ToDateTime().HasValue)
{
new_location.LOC_START = add.Period.StartElement.ToDateTime().Value;
}
else
{
new_location.LOC_START = DateTime.Now;
}
if (add.Period != null && add.Period.EndElement.ToDateTime().HasValue)
{
new_location.LOC_END = add.Period.EndElement.ToDateTime().Value;
}
else
{
new_location.LOC_END = null;
}
// GEOCODE
if (json != null && json.result != null && json.result.addressMatches != null && json.result.addressMatches.Count() > 0)
{
new_location.GEOCODE = json.result.addressMatches[0].geographies.censusblocks[0].GEOID;
// CITY_GEOCODE - using lat/log determine the city
;
// GEOCODE_BOUNDARY_YEAR
// based on benchmark=Public_AR_Census2010 on Gov CENSUS Request
new_location.GEOCODE_BOUNDARY_YEAR = 2010;
// GEOLEVEL - should be based on the size of the GEOCODE
new_location.GEOLEVEL = "T";
// MATCH_STRENGTH
new_location.MATCH_STRENGTH = null;
// LATITUDE
if (json != null)
{
new_location.LATITUDE = Convert.ToDecimal(json.result.addressMatches[0].coordinates.x);
}
// LONGITUDE
if (json != null)
{
new_location.LATITUDE = Convert.ToDecimal(json.result.addressMatches[0].coordinates.y);
}
// GEOCODE_APP
new_location.GEOCODE_APP = "US Census API";
try
{
result.Add(new_location);
}
catch (Exception ex)
{
log.Info(ex.Message);
}
}
else
{
// not able to geocode location
log.Info("Error: Patient (" + iPatient.Id + ") Not able to geocode '" + address + "'");
}
}
else
{
// not able to geocode location
log.Info("Error: Not able to geocode '" + address + "'");
}
}
catch (Exception ex)
{
log.Info("Error: " + ex.Message);
}
}
return(result);
}