6 protected $iMaxRank = 28;
8 function ReverseGeocode(&$oDB)
13 function setZoom($iZoom)
15 // Zoom to rank, this could probably be calculated but a lookup gives fine control
17 0 => 2, // Continent / Sea
29 12 => 18, // Town / Village
33 16 => 26, // Street, TODO: major street?
35 18 => 30, // or >, Building
36 19 => 30, // or >, Building
38 $this->iMaxRank = (isset($iZoom) && isset($aZoomRank[$iZoom]))?$aZoomRank[$iZoom]:28;
41 // returns { place_id =>, type => '(osm|tiger)' }
42 // fails if no place was found
43 function lookup($fLat, $fLon, $bDoInterpolation = true)
45 $sPointSQL = 'ST_SetSRID(ST_Point('.$fLon.','.$fLat.'),4326)';
46 $iMaxRank = $this->iMaxRank;
48 // Find the nearest point
49 $fSearchDiam = 0.0004;
52 $fMaxAreaDistance = 1;
53 $bIsInUnitedStates = false;
54 $bPlaceIsTiger = false;
55 $bPlaceIsLine = false;
56 while (!$iPlaceID && $fSearchDiam < $fMaxAreaDistance) {
57 $fSearchDiam = $fSearchDiam * 2;
59 // If we have to expand the search area by a large amount then we need a larger feature
60 // then there is a limit to how small the feature should be
61 if ($fSearchDiam > 2 && $iMaxRank > 4) $iMaxRank = 4;
62 if ($fSearchDiam > 1 && $iMaxRank > 9) $iMaxRank = 8;
63 if ($fSearchDiam > 0.8 && $iMaxRank > 10) $iMaxRank = 10;
64 if ($fSearchDiam > 0.6 && $iMaxRank > 12) $iMaxRank = 12;
65 if ($fSearchDiam > 0.2 && $iMaxRank > 17) $iMaxRank = 17;
66 if ($fSearchDiam > 0.1 && $iMaxRank > 18) $iMaxRank = 18;
67 if ($fSearchDiam > 0.008 && $iMaxRank > 22) $iMaxRank = 22;
68 if ($fSearchDiam > 0.001 && $iMaxRank > 26) $iMaxRank = 26;
70 $sSQL = 'select place_id,parent_place_id,rank_search,calculated_country_code';
71 $sSQL .= ' FROM placex';
72 $sSQL .= ' WHERE ST_DWithin('.$sPointSQL.', geometry, '.$fSearchDiam.')';
73 $sSQL .= ' and rank_search != 28 and rank_search >= '.$iMaxRank;
74 $sSQL .= ' and (name is not null or housenumber is not null)';
75 $sSQL .= ' and class not in (\'waterway\',\'railway\',\'tunnel\',\'bridge\',\'man_made\')';
76 $sSQL .= ' and indexed_status = 0 ';
77 $sSQL .= ' and (ST_GeometryType(geometry) not in (\'ST_Polygon\',\'ST_MultiPolygon\') ';
78 $sSQL .= ' OR ST_DWithin('.$sPointSQL.', centroid, '.$fSearchDiam.'))';
79 $sSQL .= ' ORDER BY ST_distance('.$sPointSQL.', geometry) ASC limit 1';
80 if (CONST_Debug) var_dump($sSQL);
82 $this->oDB->getRow($sSQL),
83 "Could not determine closest place."
85 $iPlaceID = $aPlace['place_id'];
86 $iParentPlaceID = $aPlace['parent_place_id'];
87 $bIsInUnitedStates = ($aPlace['calculated_country_code'] == 'us');
89 // if a street or house was found, look in interpolation lines table
90 if ($bDoInterpolation && $this->iMaxRank >= 28 && $aPlace && $aPlace['rank_search'] >= 26) {
91 // if a house was found, search the interpolation line that is at least as close as the house
92 $sSQL = 'SELECT place_id, parent_place_id, 30 as rank_search, ST_line_locate_point(linegeo,'.$sPointSQL.') as fraction';
93 $sSQL .= ' FROM location_property_osmline';
94 $sSQL .= ' WHERE ST_DWithin('.$sPointSQL.', linegeo, '.$fSearchDiam.')';
95 $sSQL .= ' and indexed_status = 0 ';
96 $sSQL .= ' ORDER BY ST_distance('.$sPointSQL.', linegeo) ASC limit 1';
99 $sSQL = preg_replace('/limit 1/', 'limit 100', $sSQL);
102 $aAllHouses = chksql($this->oDB->getAll($sSQL));
103 foreach ($aAllHouses as $i) {
104 echo $i['housenumber'] . ' | ' . $i['distance'] * 1000 . ' | ' . $i['lat'] . ' | ' . $i['lon']. ' | '. "<br>\n";
107 $aPlaceLine = chksql(
108 $this->oDB->getRow($sSQL),
109 "Could not determine closest housenumber on an osm interpolation line."
112 if (CONST_Debug) var_dump('found housenumber in interpolation lines table', $aPlaceLine);
113 if ($aPlace['rank_search'] == 30) {
114 // if a house was already found in placex, we have to find out,
115 // if the placex house or the interpolated house are closer to the searched point
116 // distance between point and placex house
117 $sSQL = 'SELECT ST_distance('.$sPointSQL.', house.geometry) as distance FROM placex as house WHERE house.place_id='.$iPlaceID;
118 $aDistancePlacex = chksql(
119 $this->oDB->getRow($sSQL),
120 "Could not determine distance between searched point and placex house."
122 $fDistancePlacex = $aDistancePlacex['distance'];
123 // distance between point and interpolated house (fraction on interpolation line)
124 $sSQL = 'SELECT ST_distance('.$sPointSQL.', ST_LineInterpolatePoint(linegeo, '.$aPlaceLine['fraction'].')) as distance';
125 $sSQL .= ' FROM location_property_osmline WHERE place_id = '.$aPlaceLine['place_id'];
126 $aDistanceInterpolation = chksql(
127 $this->oDB->getRow($sSQL),
128 "Could not determine distance between searched point and interpolated house."
130 $fDistanceInterpolation = $aDistanceInterpolation['distance'];
131 if ($fDistanceInterpolation < $fDistancePlacex) {
132 // interpolation is closer to point than placex house
133 $bPlaceIsLine = true;
134 $aPlace = $aPlaceLine;
135 $iPlaceID = $aPlaceLine['place_id'];
136 $iParentPlaceID = $aPlaceLine['parent_place_id']; // the street
137 $fFraction = $aPlaceLine['fraction'];
140 // else: nothing to do, take placex house from above
142 $bPlaceIsLine = true;
143 $aPlace = $aPlaceLine;
144 $iPlaceID = $aPlaceLine['place_id'];
145 $iParentPlaceID = $aPlaceLine['parent_place_id']; // the street
146 $fFraction = $aPlaceLine['fraction'];
152 // Only street found? If it's in the US we can check TIGER data for nearest housenumber
153 if (CONST_Use_US_Tiger_Data && $bDoInterpolation && $bIsInUnitedStates && $this->iMaxRank >= 28 && $iPlaceID && ($aPlace['rank_search'] == 26 || $aPlace['rank_search'] == 27 )) {
154 $fSearchDiam = 0.001;
155 $sSQL = 'SELECT place_id,parent_place_id,30 as rank_search, ST_line_locate_point(linegeo,'.$sPointSQL.') as fraction';
156 //if (CONST_Debug) { $sSQL .= ', housenumber, ST_distance('.$sPointSQL.', centroid) as distance, st_y(centroid) as lat, st_x(centroid) as lon'; }
157 $sSQL .= ' FROM location_property_tiger WHERE parent_place_id = '.$iPlaceID;
158 $sSQL .= ' AND ST_DWithin('.$sPointSQL.', linegeo, '.$fSearchDiam.')'; //no centroid anymore in Tiger data, now we have lines
159 $sSQL .= ' ORDER BY ST_distance('.$sPointSQL.', linegeo) ASC limit 1';
162 $sSQL = preg_replace('/limit 1/', 'limit 100', $sSQL);
165 $aAllHouses = chksql($this->oDB->getAll($sSQL));
166 foreach ($aAllHouses as $i) {
167 echo $i['housenumber'] . ' | ' . $i['distance'] * 1000 . ' | ' . $i['lat'] . ' | ' . $i['lon']. ' | '. "<br>\n";
171 $aPlaceTiger = chksql(
172 $this->oDB->getRow($sSQL),
173 "Could not determine closest Tiger place."
176 if (CONST_Debug) var_dump('found Tiger housenumber', $aPlaceTiger);
177 $bPlaceIsTiger = true;
178 $aPlace = $aPlaceTiger;
179 $iPlaceID = $aPlaceTiger['place_id'];
180 $iParentPlaceID = $aPlaceTiger['parent_place_id']; // the street
181 $fFraction = $aPlaceTiger['fraction'];
186 // The point we found might be too small - use the address to find what it is a child of
187 if ($iPlaceID && $iMaxRank < 28) {
188 if (($aPlace['rank_search'] > 28 || $bPlaceIsTiger || $bPlaceIsLine) && $iParentPlaceID) {
189 $iPlaceID = $iParentPlaceID;
191 $sSQL = 'select address_place_id';
192 $sSQL .= ' FROM place_addressline';
193 $sSQL .= " WHERE place_id = $iPlaceID";
194 $sSQL .= " ORDER BY abs(cached_rank_address - $iMaxRank) asc,cached_rank_address desc,isaddress desc,distance desc";
196 $iPlaceID = chksql($this->oDB->getOne($sSQL), "Could not get parent for place.");
198 $iPlaceID = $aPlace['place_id'];
202 'place_id' => $iPlaceID,
203 'type' => $bPlaceIsTiger ? 'tiger' : ($bPlaceIsLine ? 'interpolation' : 'osm'),
204 'fraction' => ($bPlaceIsTiger || $bPlaceIsLine) ? $fFraction : -1