[Geocoding] geocoding of intersection with two road names given

[Sstein]

Hi Sarah,

Thanks for answering (in your free time) - this info definitively helps!
Keep up the good work!

Greetings from Chile,
Stefan



> El 21-03-2015, a las 5:14, Sarah Hoffmann <lonvia at denofr.de> escribió:
> 
> Hi Stefan,
> 
>> On Wed, Mar 18, 2015 at 06:58:06PM -0400, Stefan Steiniger wrote:
>> Dear GeoCoders,
>> 
>> I am having a database of traffic accidents. All accidents that
>> happened at an intersections are described by giving the two street
>> names. Is there an option to send such a request to Nominatim?
>> I tried it with "Street A, and, Street B, City", without success.
> 
> This is currently not implemented in Nominatim, so you have to
> do it on your own.
> 
>> Or: Would I have to fetch the geometry of either road and do then
>> some processing with my client a la JTS: geom.intersect(geom2)?
>> Assuming a small area -> planar 2D should be fine.
>> If I need to do it this way: Does "polygon_geojson=1" give me the
>> complete LineString as in the DB?
> 
> Nominatim only returns the geometry of a single OSM way. That means
> the result is inclomplete when the street has been split into
> multiple ways because by default Nominatim only returns one result if
> the streets look like duplicates. There is an option 'dedupe=0' which
> ensures that you get all parts of the street that match your query.
> That should then be enough to get all geometries you need.
> 
>> PS: Btw. I am using iPython Notebook, so I guess shapely helps me
>> here to do the JTS stuff, in case someone knows?
> 
> Jep, shapely should provide all the functions you need.
> 
> Regards
> 
> Sarah