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Change to transform the point if not in nad83 long lat already

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git-svn-id: http://svn.osgeo.org/postgis/trunk@6820 b70326c6-7e19-0410-871a-916f4a2858ee
This commit is contained in:
Regina Obe 2011-02-15 06:36:33 +00:00
parent d4237550af
commit fd7ccedce4
1 changed files with 14 additions and 7 deletions
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21
extras/tiger_geocoder/tiger_2010/geocode/reverse_geocode.sql
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@ -6,7 +6,7 @@
-- This function given a point try to determine the approximate street address (norm_addy form)
-- and array of cross streets, as well as interpolated points along the streets
-- Use case example an address at the intersection of 3 streets: SELECT pprint_addy(r.addy[1]) As st1, pprint_addy(r.addy[2]) As st2, pprint_addy(r.addy[3]) As st3, array_to_string(r.street, ',') FROM reverse_geocode(ST_GeomFromText('POINT(-71.057811 42.358274)',4269)) As r;
--set search_path=tiger,public;
set search_path=tiger,public;
CREATE OR REPLACE FUNCTION reverse_geocode(
IN pt geometry,
IN include_strnum_range boolean,
@ -22,13 +22,20 @@ DECLARE
var_strnum varchar;
var_primary_line geometry := NULL;
var_primary_dist numeric(10,2) ;
var_pt geometry;
BEGIN
IF pt IS NULL THEN
RETURN;
ELSE
IF ST_SRID(pt) = 4269 THEN
var_pt := pt;
ELSE
var_pt := ST_Transform(pt, 4269);
END IF;
END IF;
-- Determine state tables to check
-- this is needed to take advantage of constraint exclusion
var_states := ARRAY(SELECT statefp FROM state WHERE ST_Intersects(the_geom, pt) );
var_states := ARRAY(SELECT statefp FROM state WHERE ST_Intersects(the_geom, var_pt) );
IF array_upper(var_states, 1) IS NULL THEN
-- We don't have any data for this state
RETURN;
@ -42,15 +49,15 @@ BEGIN
(SELECT z.place FROM zip_state_loc AS z WHERE z.zip = foo.zip and z.statefp = foo.statefp LIMIT 1) As place, foo.intpt,
side, to_number(fromhn, '999999') As fromhn, to_number(tohn, '999999') As tohn, ST_GeometryN(ST_Multi(line),1) As line, foo.dist
FROM
(SELECT e.the_geom As line, e.fullname, a.zip, s.stusps, ST_ClosestPoint(e.the_geom, pt) As intpt, e.statefp, a.side, a.fromhn, a.tohn, ST_Distance_Sphere(e.the_geom, pt) As dist
(SELECT e.the_geom As line, e.fullname, a.zip, s.stusps, ST_ClosestPoint(e.the_geom, var_pt) As intpt, e.statefp, a.side, a.fromhn, a.tohn, ST_Distance_Sphere(e.the_geom, var_pt) As dist
FROM edges AS e INNER JOIN state As s ON (e.statefp = s.statefp AND s.statefp = ANY(var_states) )
INNER JOIN faces As fl ON (e.tfidl = fl.tfid AND e.statefp = fl.statefp)
INNER JOIN faces As fr ON (e.tfidr = fr.tfid AND e.statefp = fr.statefp)
INNER JOIN addr As a ON ( e.tlid = a.tlid AND e.statefp = a.statefp AND
( ( ST_Contains(fl.the_geom, pt) AND a.side = 'L') OR ( ST_Contains(fr.the_geom, pt) AND a.side = 'R' ) ) )
( ( ST_Contains(fl.the_geom, var_pt) AND a.side = 'L') OR ( ST_Contains(fr.the_geom, var_pt) AND a.side = 'R' ) ) )
-- INNER JOIN zip_state_loc As z ON (a.statefp = z.statefp AND a.zip = z.zip) /** really slow with this join **/
WHERE e.statefp = ANY(var_states) AND a.statefp = ANY(var_states) AND ST_DWithin(e.the_geom, pt, 0.005)
ORDER BY ST_Distance_Sphere(e.the_geom, pt) LIMIT 4) As foo
WHERE e.statefp = ANY(var_states) AND a.statefp = ANY(var_states) AND ST_DWithin(e.the_geom, var_pt, 0.005)
ORDER BY ST_Distance_Sphere(e.the_geom, var_pt) LIMIT 4) As foo
WHERE dist < 150 --less than 150 m
ORDER BY foo.fullname, foo.dist) As f ORDER BY f.dist LOOP
IF var_primary_line IS NULL THEN --this is the first time in the loop and our primary guess
@ -65,7 +72,7 @@ BEGIN
--interploate the number -- note that if fromhn > tohn we will be subtracting which is what we want
-- We only consider differential distances are reeally close from our primary pt
IF var_redge.dist < var_primary_dist*1.1 THEN
var_strnum := (var_redge.fromhn + ST_Line_Locate_Point(var_redge.line, pt)*(var_redge.tohn - var_redge.fromhn))::numeric(10)::varchar;
var_strnum := (var_redge.fromhn + ST_Line_Locate_Point(var_redge.line, var_pt)*(var_redge.tohn - var_redge.fromhn))::numeric(10)::varchar;
var_addy := normalize_address( COALESCE(var_strnum::varchar || ' ', '') || var_redge.fullname || ', ' || var_redge.place || ', ' || var_redge.stusps || ' ' || var_redge.zip);
addy := array_append(addy, var_addy);
END IF;