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In collaboration with the Treasurer/Tax Collector we are making a restful street address geocoding service available. This page describes this service. We are trying to follow the OGC standard which is described here.
The
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Request
Here is the DEV URL with an example address of "100 Main St":
The service uses uses the street segment network only.
These data are carefully maintained by Department of Public Works, and brought into EAS on a nightly basis.
We return a single best candidate and have not implemented a scoring system.
Instead of scoring we return exceptions to help you correct the input data.
The location is based on the linear interpolation of the matching street segment.
We offset by 4 meters (about 12 feet) to the even or odd side like this:
The Response
We strongly prefer JSON (available now) but we can produce XML if you buy us a beer.
The JSON is formatted for readability but your browser may obscure that.
The way to see the nicely formated JSON is to right click on the web page and select "view source".
The Chrome browser has a nice feature here: (You need to copy and paste the text below to the Chrome address bar and hit enter.)
view-source:http://10.250.60.189/streetNetwork/geocode/findAddressCandidates?f=json&Address=169 SACRAMENTO ST&Zip=94114
In any case, the JSON should look something like this:
| Code Block |
|---|
{
"inputAddressString": "100 Main St",
"inputZipCodeString": "94105",
"spatialReference": {
"wkid": 4326
},
"foundMatch": true,
"foundEasMatch": false,
"candidates": [
{
"address": "100 MAIN ST",
"location": "POINT (-122.3948959209805700 37.7917552676099080)",
"score": null,
"attributes": {
"StreetName": "MAIN",
"StreetType": "ST"
},
"addressNumber": "100",
"street": {
"streetNamePrimary": {
"base_street_name": "MAIN",
"street_type": "ST"
},
"streetNameAliases": [],
"l_f_add": 101,
"l_t_add": 199,
"r_f_add": 100,
"r_t_add": 198,
"seg_cnn": 8628000,
"geometry": "MULTILINESTRING ((-122.3949402377882200 37.7918420903234780, -122.3934079394635700 37.7906126704266400))"
},
"zipCode": "94105",
"jurisdiction": "SF MAIN"
}
],
"validations": [],
"didYouMean": []
} |
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Results, Performance, Tests
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Reading JSON
The JSON is formatted for readability but your browser may obscure that.
The way to see the nicely formated JSON is to right click on the web page and select "view source".
The Chrome browser has a nice feature here: (You need to copy and paste the text below to the Chrome address bar and hit enter.)
view-source:http://10.250.60.189/streetNetwork/geocode/findAddressCandidates?f=json&Address=169 SACRAMENTO ST&Zip=94114