8 protected $iMaxRank = 28;
11 public function __construct(&$oDB)
17 public function setZoom($iZoom)
19 // Zoom to rank, this could probably be calculated but a lookup gives fine control
21 0 => 2, // Continent / Sea
33 12 => 18, // Town / Village
37 16 => 26, // Street, TODO: major street?
39 18 => 30, // or >, Building
40 19 => 30, // or >, Building
42 $this->iMaxRank = (isset($iZoom) && isset($aZoomRank[$iZoom]))?$aZoomRank[$iZoom]:28;
47 * returns { place_id =>, type => '(osm|tiger)' }
48 * fails if no place was found
52 public function lookup($fLat, $fLon, $bDoInterpolation = true)
54 $sPointSQL = 'ST_SetSRID(ST_Point('.$fLon.','.$fLat.'),4326)';
55 $iMaxRank = $this->iMaxRank;
57 // Find the nearest point
58 $fSearchDiam = 0.0004;
61 $fMaxAreaDistance = 1;
62 $bIsInUnitedStates = false;
63 $bPlaceIsTiger = false;
64 $bPlaceIsLine = false;
65 while (!$iPlaceID && $fSearchDiam < $fMaxAreaDistance) {
66 $fSearchDiam = $fSearchDiam * 2;
68 // If we have to expand the search area by a large amount then we need a larger feature
69 // then there is a limit to how small the feature should be
70 if ($fSearchDiam > 2 && $iMaxRank > 4) $iMaxRank = 4;
71 if ($fSearchDiam > 1 && $iMaxRank > 9) $iMaxRank = 8;
72 if ($fSearchDiam > 0.8 && $iMaxRank > 10) $iMaxRank = 10;
73 if ($fSearchDiam > 0.6 && $iMaxRank > 12) $iMaxRank = 12;
74 if ($fSearchDiam > 0.2 && $iMaxRank > 17) $iMaxRank = 17;
75 if ($fSearchDiam > 0.1 && $iMaxRank > 18) $iMaxRank = 18;
76 if ($fSearchDiam > 0.008 && $iMaxRank > 22) $iMaxRank = 22;
77 if ($fSearchDiam > 0.001 && $iMaxRank > 26) $iMaxRank = 26;
79 $sSQL = 'select place_id,parent_place_id,rank_search,calculated_country_code';
80 $sSQL .= ' FROM placex';
81 $sSQL .= ' WHERE ST_DWithin('.$sPointSQL.', geometry, '.$fSearchDiam.')';
82 $sSQL .= ' and rank_search != 28 and rank_search >= '.$iMaxRank;
83 $sSQL .= ' and (name is not null or housenumber is not null)';
84 $sSQL .= ' and class not in (\'waterway\',\'railway\',\'tunnel\',\'bridge\',\'man_made\')';
85 $sSQL .= ' and indexed_status = 0 ';
86 $sSQL .= ' and (ST_GeometryType(geometry) not in (\'ST_Polygon\',\'ST_MultiPolygon\') ';
87 $sSQL .= ' OR ST_DWithin('.$sPointSQL.', centroid, '.$fSearchDiam.'))';
88 $sSQL .= ' ORDER BY ST_distance('.$sPointSQL.', geometry) ASC limit 1';
89 if (CONST_Debug) var_dump($sSQL);
91 $this->oDB->getRow($sSQL),
92 "Could not determine closest place."
94 $iPlaceID = $aPlace['place_id'];
95 $iParentPlaceID = $aPlace['parent_place_id'];
96 $bIsInUnitedStates = ($aPlace['calculated_country_code'] == 'us');
98 // if a street or house was found, look in interpolation lines table
99 if ($bDoInterpolation && $this->iMaxRank >= 28 && $aPlace && $aPlace['rank_search'] >= 26) {
100 // if a house was found, search the interpolation line that is at least as close as the house
101 $sSQL = 'SELECT place_id, parent_place_id, 30 as rank_search, ST_LineLocatePoint(linegeo,'.$sPointSQL.') as fraction';
102 $sSQL .= ' FROM location_property_osmline';
103 $sSQL .= ' WHERE ST_DWithin('.$sPointSQL.', linegeo, '.$fSearchDiam.')';
104 $sSQL .= ' and indexed_status = 0 ';
105 $sSQL .= ' ORDER BY ST_distance('.$sPointSQL.', linegeo) ASC limit 1';
108 $sSQL = preg_replace('/limit 1/', 'limit 100', $sSQL);
111 $aAllHouses = chksql($this->oDB->getAll($sSQL));
112 foreach ($aAllHouses as $i) {
113 echo $i['housenumber'] . ' | ' . $i['distance'] * 1000 . ' | ' . $i['lat'] . ' | ' . $i['lon']. ' | '. "<br>\n";
116 $aPlaceLine = chksql(
117 $this->oDB->getRow($sSQL),
118 "Could not determine closest housenumber on an osm interpolation line."
121 if (CONST_Debug) var_dump('found housenumber in interpolation lines table', $aPlaceLine);
122 if ($aPlace['rank_search'] == 30) {
123 // if a house was already found in placex, we have to find out,
124 // if the placex house or the interpolated house are closer to the searched point
125 // distance between point and placex house
126 $sSQL = 'SELECT ST_distance('.$sPointSQL.', house.geometry) as distance FROM placex as house WHERE house.place_id='.$iPlaceID;
127 $aDistancePlacex = chksql(
128 $this->oDB->getRow($sSQL),
129 "Could not determine distance between searched point and placex house."
131 $fDistancePlacex = $aDistancePlacex['distance'];
132 // distance between point and interpolated house (fraction on interpolation line)
133 $sSQL = 'SELECT ST_distance('.$sPointSQL.', ST_LineInterpolatePoint(linegeo, '.$aPlaceLine['fraction'].')) as distance';
134 $sSQL .= ' FROM location_property_osmline WHERE place_id = '.$aPlaceLine['place_id'];
135 $aDistanceInterpolation = chksql(
136 $this->oDB->getRow($sSQL),
137 "Could not determine distance between searched point and interpolated house."
139 $fDistanceInterpolation = $aDistanceInterpolation['distance'];
140 if ($fDistanceInterpolation < $fDistancePlacex) {
141 // interpolation is closer to point than placex house
142 $bPlaceIsLine = true;
143 $aPlace = $aPlaceLine;
144 $iPlaceID = $aPlaceLine['place_id'];
145 $iParentPlaceID = $aPlaceLine['parent_place_id']; // the street
146 $fFraction = $aPlaceLine['fraction'];
149 // else: nothing to do, take placex house from above
151 $bPlaceIsLine = true;
152 $aPlace = $aPlaceLine;
153 $iPlaceID = $aPlaceLine['place_id'];
154 $iParentPlaceID = $aPlaceLine['parent_place_id']; // the street
155 $fFraction = $aPlaceLine['fraction'];
161 // Only street found? If it's in the US we can check TIGER data for nearest housenumber
162 if (CONST_Use_US_Tiger_Data && $bDoInterpolation && $bIsInUnitedStates && $this->iMaxRank >= 28 && $iPlaceID && ($aPlace['rank_search'] == 26 || $aPlace['rank_search'] == 27 )) {
163 $fSearchDiam = 0.001;
164 $sSQL = 'SELECT place_id,parent_place_id,30 as rank_search, ST_LineLocatePoint(linegeo,'.$sPointSQL.') as fraction';
165 //if (CONST_Debug) { $sSQL .= ', housenumber, ST_distance('.$sPointSQL.', centroid) as distance, st_y(centroid) as lat, st_x(centroid) as lon'; }
166 $sSQL .= ' FROM location_property_tiger WHERE parent_place_id = '.$iPlaceID;
167 $sSQL .= ' AND ST_DWithin('.$sPointSQL.', linegeo, '.$fSearchDiam.')'; //no centroid anymore in Tiger data, now we have lines
168 $sSQL .= ' ORDER BY ST_distance('.$sPointSQL.', linegeo) ASC limit 1';
171 $sSQL = preg_replace('/limit 1/', 'limit 100', $sSQL);
174 $aAllHouses = chksql($this->oDB->getAll($sSQL));
175 foreach ($aAllHouses as $i) {
176 echo $i['housenumber'] . ' | ' . $i['distance'] * 1000 . ' | ' . $i['lat'] . ' | ' . $i['lon']. ' | '. "<br>\n";
180 $aPlaceTiger = chksql(
181 $this->oDB->getRow($sSQL),
182 "Could not determine closest Tiger place."
185 if (CONST_Debug) var_dump('found Tiger housenumber', $aPlaceTiger);
186 $bPlaceIsTiger = true;
187 $aPlace = $aPlaceTiger;
188 $iPlaceID = $aPlaceTiger['place_id'];
189 $iParentPlaceID = $aPlaceTiger['parent_place_id']; // the street
190 $fFraction = $aPlaceTiger['fraction'];
195 // The point we found might be too small - use the address to find what it is a child of
196 if ($iPlaceID && $iMaxRank < 28) {
197 if (($aPlace['rank_search'] > 28 || $bPlaceIsTiger || $bPlaceIsLine) && $iParentPlaceID) {
198 $iPlaceID = $iParentPlaceID;
200 $sSQL = 'select address_place_id';
201 $sSQL .= ' FROM place_addressline';
202 $sSQL .= " WHERE place_id = $iPlaceID";
203 $sSQL .= " ORDER BY abs(cached_rank_address - $iMaxRank) asc,cached_rank_address desc,isaddress desc,distance desc";
205 $iPlaceID = chksql($this->oDB->getOne($sSQL), "Could not get parent for place.");
207 $iPlaceID = $aPlace['place_id'];
211 'place_id' => $iPlaceID,
212 'type' => $bPlaceIsTiger ? 'tiger' : ($bPlaceIsLine ? 'interpolation' : 'osm'),
213 'fraction' => ($bPlaceIsTiger || $bPlaceIsLine) ? $fFraction : -1