@ -12,15 +12,13 @@ With reverse geocoding with Mapzen Search, you can look up all sorts of informat
* postal areas
* countries
## Basic reverse geocoding search
To get started with reverse geocoding, you need a [free, developer API key](https://mapzen.com/developers) and a latitude,longitude pair in decimal degrees specified with the parameters `point.lat` and `point.lon`, respectively. For example, the Eiffel Tower in Paris, France, is located at `48.858268,2.294471`. The reverse geocode query for this would be:
For example, this /place query looks up the Eiffel Tower in OSM:
***From Rhonda -- looks like this returns a radio station in Michigan? Also need to redo the query to include production server and the reader's API key***
*** From Rhonda -- what are some examples of when you would use a /place search? When would you have this info and need to get the details? What would you do with it.***
## Advanced Usage
## Search for multiple places in a query
To request more than 1 /place lookup in one request, simply join multiple values together delimited by comma.
For example, this /place query looks up the Eiffel Tower in OSM and `30 West 26th St, New York, NY` in OpenAddresses:
To search for more than one `/place` in a request, join multiple values together and separate them with a comma. For example, this /place query looks up the Eiffel Tower in OSM and `30 West 26th St, New York, NY` in OpenAddresses:
***From Rhonda -- is there another example where you might do multiple requests at the same time...in other words, more related locations?***
If you enter a `source:layer:id` combination that cannot be found then the `features` array in the response will continue a different number of elements than the number of requests. This will be most noticeable in multi-id requests since your request may have 3 ids requested but only 2 results returned. The reason for this is that the `features` section of the response is GeoJSON-compliant and there is currently no way to convey an exception condition (not even an empty JSON element, `{}`). For this reason, if your application is dependent upon the results mapping directly to the individual input requests in order, then you'll have to do your own bookkeeping to handle with exception conditions.
Keep in mind that if you enter a `source:layer:id` combination that cannot be found, then the `features` array in the response contains a different number of elements than the number of requests. This will be most noticeable in requests with multiple IDs, as your request may have three IDs requested but only two results returned. The reason for this is that the `features` section of the response is GeoJSON-compliant and there is currently no way to convey an exception condition (not even an empty JSON element, `{}`). For this reason, if your application is dependent upon the results mapping directly to the individual input requests in order, then you'll have to do your own bookkeeping to handle with exception conditions.
## Valid combinations
## Valid combinations of place searches
Some combinations of `sources` and `layers` are valid while others aren't. Please use the following table for reference:
Some combinations of `sources` and `layers` are valid while others are not. This table shows valid combinations.