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https://github.com/osm-search/Nominatim.git
synced 2026-03-06 18:14:16 +00:00
changed reverse geocode algorithm
This commit is contained in:
gemo1011
@@ -68,6 +68,50 @@ class ReverseGeocode
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'Could not determine closest housenumber on an osm interpolation line.'
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'Could not determine closest housenumber on an osm interpolation line.'
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);
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);
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}
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}
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protected function lookupPolygon($sPointSQL, $iMaxRank)
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{
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$sSQL = 'select place_id,parent_place_id,rank_search,country_code, geometry';
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$sSQL .= ' FROM placex';
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$sSQL .= ' WHERE ST_GeometryType(geometry) in (\'ST_Polygon\',\'ST_MultiPolygon\')';
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$sSQL .= ' AND rank_search <= LEAST(25, '.$iMaxRank.')';
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$sSQL .= ' AND ST_CONTAINS(geometry, '.$sPointSQL.' )';
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$sSQL .= ' AND type != \'postcode\' ';
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$sSQL .= ' AND name IS NOT NULL ';
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$sSQL .= ' ORDER BY rank_search DESC LIMIT 1';
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$aPoly = chksql(
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$this->oDB->getRow($sSQL),
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'Could not determine polygon containing the point.'
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);
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if ($aPoly) {
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$iParentPlaceID = $aPoly['parent_place_id'];
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$iRankSearch = $aPoly['rank_search'];
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$iGeometry = $aPoly['geometry'];
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$sSQL = 'select place_id,parent_place_id,rank_search,country_code,';
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$sSQL .=' ST_distance('.$sPointSQL.', geometry) as distance';
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$sSQL .= ' FROM placex';
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$sSQL .= ' WHERE osm_type = \'N\'';
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$sSQL .= ' AND rank_search >= '.$iRankSearch;
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$sSQL .= ' AND rank_search <= LEAST(25, '.$iMaxRank.')';
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$sSQL .= ' AND ST_CONTAINS(\''.$iGeometry.'\'::geometry, geometry )';
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$sSQL .= ' AND type != \'postcode\'';
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$sSQL .= ' AND name IS NOT NULL ';
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$sSQL .= ' ORDER BY distance ASC,';
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$sSQL .= ' rank_search DESC';
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$sSQL .= ' limit 1';
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if (CONST_Debug) var_dump($sSQL);
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$aPlacNode = chksql(
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$this->oDB->getRow($sSQL),
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'Could not determine place node.'
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);
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if ($aPlacNode) {
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return $aPlacNode;
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}
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}
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return $aPoly;
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}
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public function lookup($fLat, $fLon, $bDoInterpolation = true)
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public function lookup($fLat, $fLon, $bDoInterpolation = true)
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{
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{
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@@ -79,61 +123,36 @@ class ReverseGeocode
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public function lookupPoint($sPointSQL, $bDoInterpolation = true)
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public function lookupPoint($sPointSQL, $bDoInterpolation = true)
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{
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{
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$iMaxRank = $this->iMaxRank;
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$iMaxRank = $this->iMaxRank;
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// Find the nearest point
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// Find the nearest point
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$fSearchDiam = 0.0004;
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$fSearchDiam = 0.006;
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$oResult = null;
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$oResult = null;
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$aPlace = null;
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$aPlace = null;
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$fMaxAreaDistance = 1;
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$fMaxAreaDistance = 1;
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$bIsTigerStreet = false;
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$bIsTigerStreet = false;
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while ($oResult === null && $fSearchDiam < $fMaxAreaDistance) {
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$fSearchDiam = $fSearchDiam * 2;
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// for POI or street level
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if ( $iMaxRank >= 26 ) {
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// If we have to expand the search area by a large amount then we need a larger feature
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// then there is a limit to how small the feature should be
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if ($fSearchDiam > 2 && $iMaxRank > 4) $iMaxRank = 4;
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if ($fSearchDiam > 1 && $iMaxRank > 9) $iMaxRank = 8;
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if ($fSearchDiam > 0.8 && $iMaxRank > 10) $iMaxRank = 10;
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if ($fSearchDiam > 0.6 && $iMaxRank > 12) $iMaxRank = 12;
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if ($fSearchDiam > 0.2 && $iMaxRank > 17) $iMaxRank = 17;
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if ($fSearchDiam > 0.1 && $iMaxRank > 18) $iMaxRank = 18;
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if ($fSearchDiam > 0.008 && $iMaxRank > 22) $iMaxRank = 22;
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if ($fSearchDiam > 0.001 && $iMaxRank > 26) {
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// try with interpolations before continuing
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if ($bDoInterpolation) {
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$aHouse = $this->lookupInterpolation($sPointSQL, $fSearchDiam/2);
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if ($aHouse) {
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$oResult = new Result($aHouse['place_id'], Result::TABLE_OSMLINE);
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$oResult->iHouseNumber = closestHouseNumber($aHouse);
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$aPlace = $aHouse;
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$iParentPlaceID = $aHouse['parent_place_id']; // the street
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$iMaxRank = 30;
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break;
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}
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}
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// no interpolation found, continue search
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$iMaxRank = 26;
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}
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$sSQL = 'select place_id,parent_place_id,rank_search,country_code,';
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$sSQL = 'select place_id,parent_place_id,rank_search,country_code,';
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$sSQL .= ' ST_distance('.$sPointSQL.', geometry) as distance';
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$sSQL .= 'CASE WHEN ST_GeometryType(geometry) in (\'ST_Polygon\',\'ST_MultiPolygon\') THEN ST_distance('.$sPointSQL.', centroid)';
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$sSQL .= ' ELSE ST_distance('.$sPointSQL.', geometry) ';
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$sSQL .= ' END as distance';
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$sSQL .= ' FROM ';
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$sSQL .= ' FROM ';
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if ($fSearchDiam < 0.01) {
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$sSQL .= ' placex';
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$sSQL .= ' placex';
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$sSQL .= ' WHERE ST_DWithin('.$sPointSQL.', geometry, '.$fSearchDiam.')';
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$sSQL .= ' WHERE ST_DWithin('.$sPointSQL.', geometry, '.$fSearchDiam.')';
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$sSQL .= ' AND';
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$sSQL .= ' AND';
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// only streets
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if ($iMaxRank == 26) {
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$sSQL .= ' rank_search != 28 and rank_search = 26';
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} else {
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} else {
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$sSQL .= ' (SELECT * FROM placex ';
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$sSQL .= ' rank_search != 28 and rank_search >= 26';
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$sSQL .= ' WHERE ST_DWithin('.$sPointSQL.', geometry, '.$fSearchDiam.')';
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$sSQL .= ' LIMIT 1000) as p WHERE';
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}
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}
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$sSQL .= ' rank_search != 28 and rank_search >= '.$iMaxRank;
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$sSQL .= ' and (name is not null or housenumber is not null';
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$sSQL .= ' and (name is not null or housenumber is not null';
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$sSQL .= ' or rank_search between 26 and 27)';
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$sSQL .= ' or rank_search between 26 and 27)';
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$sSQL .= ' and type not in (\'proposed\')';
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$sSQL .= ' and class not in (\'waterway\',\'railway\',\'tunnel\',\'bridge\',\'man_made\')';
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$sSQL .= ' and class not in (\'waterway\',\'railway\',\'tunnel\',\'bridge\',\'man_made\')';
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$sSQL .= ' and indexed_status = 0 and linked_place_id is null';
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$sSQL .= ' and indexed_status = 0 and linked_place_id is null';
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$sSQL .= ' and (ST_GeometryType(geometry) not in (\'ST_Polygon\',\'ST_MultiPolygon\') ';
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$sSQL .= ' and (ST_GeometryType(geometry) not in (\'ST_Polygon\',\'ST_MultiPolygon\') ';
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@@ -144,80 +163,49 @@ class ReverseGeocode
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$this->oDB->getRow($sSQL),
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$this->oDB->getRow($sSQL),
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'Could not determine closest place.'
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'Could not determine closest place.'
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);
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);
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if ($aPlace) {
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if ($aPlace) {
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$oResult = new Result($aPlace['place_id']);
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$iPlaceID = $aPlace['place_id'];
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$iParentPlaceID = $aPlace['parent_place_id'];
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$oResult = new Result($iPlaceID);
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if ($bDoInterpolation) {
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$iParentPlaceID = $aPlace['parent_place_id'];
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if ($aPlace['rank_search'] == 26 || $aPlace['rank_search'] == 27) {
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// if street and maxrank > streetlevel
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$bIsTigerStreet = ($aPlace['country_code'] == 'us');
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if (($aPlace['rank_search'] == 26 || $aPlace['rank_search'] == 27)&& $iMaxRank > 27 ) {
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} elseif ($aPlace['rank_search'] == 30) {
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// find the closest object (up to a certain radius) of which the street is a parent of
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// If a house was found, make sure there isn't an
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$sSQL = ' select place_id,parent_place_id,rank_search,country_code,';
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// interpolation line that is closer.
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$sSQL .= ' ST_distance('.$sPointSQL.', geometry) as distance';
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$aHouse = $this->lookupInterpolation(
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$sSQL .= ' FROM ';
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$sPointSQL,
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$sSQL .= ' placex';
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$aPlace['distance']
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// radius ?
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$sSQL .= ' WHERE ST_DWithin('.$sPointSQL.', geometry, 0.003)';
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$sSQL .= ' AND parent_place_id = '.$iPlaceID;
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$sSQL .= ' and (name is not null or housenumber is not null)';
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$sSQL .= ' ORDER BY distance ASC limit 1';
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if (CONST_Debug) var_dump($sSQL);
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$aStreet = chksql(
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$this->oDB->getRow($sSQL),
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'Could not determine closest place.'
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);
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);
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if ($aHouse && $aPlace['distance'] < $aHouse['distance']) {
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if ($aStreet) {
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$oResult = new Result(
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$iPlaceID = $aStreet['place_id'];
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$aHouse['place_id'],
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$oResult = new Result($iPlaceID);
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Result::TABLE_OSMLINE
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$iParentPlaceID = $aStreet['parent_place_id'];
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);
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$oResult->iHouseNumber = closestHouseNumber($aHouse);
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$aPlace = $aHouse;
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$iParentPlaceID = $aHouse['parent_place_id'];
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}
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}
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}
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}else{
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$aPlace = $this->lookupPolygon($sPointSQL, $iMaxRank);
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if ($aPlace) {
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$oResult = new Result($aPlace['place_id']);
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}
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}
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}
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}
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// lower than street level ($iMaxRank < 26 )
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}else{
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$aPlace = $this->lookupPolygon($sPointSQL, $iMaxRank);
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if ($aPlace) {
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$oResult = new Result($aPlace['place_id']);
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}
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}
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}
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}
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// Only street found? In the US we can check TIGER data for nearest housenumber
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if (CONST_Use_US_Tiger_Data && $bIsTigerStreet && $this->iMaxRank >= 28) {
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$fSearchDiam = $aPlace['rank_search'] > 28 ? $aPlace['distance'] : 0.001;
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$sSQL = 'SELECT place_id,parent_place_id,30 as rank_search,';
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$sSQL .= 'ST_LineLocatePoint(linegeo,'.$sPointSQL.') as fraction,';
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$sSQL .= 'ST_distance('.$sPointSQL.', linegeo) as distance,';
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$sSQL .= 'startnumber,endnumber,interpolationtype';
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$sSQL .= ' FROM location_property_tiger WHERE parent_place_id = '.$oResult->iId;
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$sSQL .= ' AND ST_DWithin('.$sPointSQL.', linegeo, '.$fSearchDiam.')';
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$sSQL .= ' ORDER BY distance ASC limit 1';
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if (CONST_Debug) var_dump($sSQL);
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$aPlaceTiger = chksql(
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$this->oDB->getRow($sSQL),
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'Could not determine closest Tiger place.'
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);
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if ($aPlaceTiger) {
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if (CONST_Debug) var_dump('found Tiger housenumber', $aPlaceTiger);
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$aPlace = $aPlaceTiger;
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$oResult = new Result($aPlace['place_id'], Result::TABLE_TIGER);
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$oResult->iHouseNumber = closestHouseNumber($aPlaceTiger);
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$iParentPlaceID = $aPlace['parent_place_id'];
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$iMaxRank = 30;
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}
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}
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// The point we found might be too small - use the address to find what it is a child of
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if ($oResult !== null && $iMaxRank < 28) {
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if ($aPlace['rank_search'] > 28 && $iParentPlaceID) {
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$iPlaceID = $iParentPlaceID;
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} else {
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$iPlaceID = $oResult->iId;
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}
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$sSQL = 'select a.address_place_id';
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$sSQL .= ' FROM place_addressline a, placex p';
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$sSQL .= " WHERE a.place_id = $iPlaceID and a.address_place_id = p.place_id";
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$sSQL .= ' AND p.linked_place_id is null';
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$sSQL .= " ORDER BY abs(cached_rank_address - $iMaxRank) asc,cached_rank_address desc,isaddress desc,distance desc";
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$sSQL .= ' LIMIT 1';
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$iPlaceID = chksql($this->oDB->getOne($sSQL), 'Could not get parent for place.');
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if ($iPlaceID) {
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$oResult = new Result($iPlaceID);
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}
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}
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return $oResult;
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return $oResult;
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}
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}
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}
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}
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