X-Git-Url: https://git.openstreetmap.org./nominatim.git/blobdiff_plain/a5750a6ef673c3f707364ac827063b69f94b26ce..e929399d4dd23fa1571dd77cf489ef51d716f5cc:/lib/ReverseGeocode.php?ds=sidebyside diff --git a/lib/ReverseGeocode.php b/lib/ReverseGeocode.php index 91a043da..8e5e8bd1 100644 --- a/lib/ReverseGeocode.php +++ b/lib/ReverseGeocode.php @@ -72,14 +72,17 @@ class ReverseGeocode 'Could not determine closest housenumber on an osm interpolation line.' ); } - + protected function polygonFunctions($sPointSQL, $iMaxRank) { + // starts the nopolygonFound function if no polygon is found with the lookupPolygon function $oResult = null; - + $aPlace = $this->lookupPolygon($sPointSQL, $iMaxRank); if ($aPlace) { $oResult = new Result($aPlace['place_id']); + // if no polygon which contains the searchpoint is found, + // the noPolygonFound function searches in the country_osm_grid table for a polygon } elseif (!$aPlace && $iMaxRank > 4) { $aPlace = $this->noPolygonFound($sPointSQL, $iMaxRank); if ($aPlace) { @@ -88,32 +91,34 @@ class ReverseGeocode } return $oResult; } - + protected function noPolygonFound($sPointSQL, $iMaxRank) { // searches for polygon in table country_osm_grid which contains the searchpoint - $sSQL = 'SELECT * FROM country_osm_grid'; - $sSQL .= ' WHERE ST_CONTAINS (geometry, '.$sPointSQL.' )'; - + // and searches for the nearest place node to the searchpoint in this polygon + $sSQL = 'SELECT country_code FROM country_osm_grid'; + $sSQL .= ' WHERE ST_CONTAINS (geometry, '.$sPointSQL.') limit 1'; + $aPoly = chksql( $this->oDB->getRow($sSQL), 'Could not determine polygon containing the point.' ); if ($aPoly) { $sCountryCode = $aPoly['country_code']; - - $sSQL = 'SELECT *, ST_distance('.$sPointSQL.', geometry) as distance'; + + $sSQL = 'SELECT place_id, ST_distance('.$sPointSQL.', geometry) as distance'; $sSQL .= ' FROM placex'; $sSQL .= ' WHERE osm_type = \'N\''; $sSQL .= ' AND country_code = \''.$sCountryCode.'\''; $sSQL .= ' AND rank_address > 0'; - $sSQL .= ' AND rank_address <= ' .Min(25, $iMaxRank); + $sSQL .= ' AND rank_address <= ' .min(25, $iMaxRank); $sSQL .= ' AND type != \'postcode\''; $sSQL .= ' AND name IS NOT NULL '; $sSQL .= ' and indexed_status = 0 and linked_place_id is null'; + $sSQL .= ' AND ST_DWithin('.$sPointSQL.', geometry, 1.0)'; $sSQL .= ' ORDER BY distance ASC, rank_address DESC'; $sSQL .= ' LIMIT 1'; - + if (CONST_Debug) var_dump($sSQL); $aPlacNode = chksql( $this->oDB->getRow($sSQL), @@ -124,14 +129,22 @@ class ReverseGeocode } } } - + protected function lookupPolygon($sPointSQL, $iMaxRank) { - $sSQL = 'SELECT * FROM'; - $sSQL .= '(select place_id,parent_place_id,rank_address, rank_search, country_code, geometry'; + // searches for polygon where the searchpoint is within + // if a polygon is found, placenodes with a higher rank are searched inside the polygon + + // polygon search begins at suburb-level + if ($iMaxRank > 25) $iMaxRank = 25; + // no polygon search over country-level + if ($iMaxRank < 4) $iMaxRank = 4; + // search for polygon + $sSQL = 'SELECT place_id, parent_place_id, rank_address, rank_search FROM'; + $sSQL .= '(select place_id, parent_place_id, rank_address, rank_search, country_code, geometry'; $sSQL .= ' FROM placex'; $sSQL .= ' WHERE ST_GeometryType(geometry) in (\'ST_Polygon\', \'ST_MultiPolygon\')'; - $sSQL .= ' AND rank_address <= ' .Min(25, $iMaxRank); + $sSQL .= ' AND rank_address Between 4 AND ' .$iMaxRank; $sSQL .= ' AND geometry && '.$sPointSQL; $sSQL .= ' AND type != \'postcode\' '; $sSQL .= ' AND name is not null'; @@ -145,13 +158,31 @@ class ReverseGeocode 'Could not determine polygon containing the point.' ); if ($aPoly) { + // if a polygon is found, search for placenodes begins ... $iParentPlaceID = $aPoly['parent_place_id']; $iRankAddress = $aPoly['rank_address']; $iRankSearch = $aPoly['rank_search']; $iPlaceID = $aPoly['place_id']; - + if ($iRankAddress != $iMaxRank) { - $sSQL = 'SELECT *'; + //search diameter for the place node search + if ($iMaxRank <= 4) { + $fSearchDiam = 4; + } elseif ($iMaxRank <= 8) { + $fSearchDiam = 2; + } elseif ($iMaxRank <= 10) { + $fSearchDiam = 1; + } elseif ($iMaxRank <= 12) { + $fSearchDiam = 0.8; + } elseif ($iMaxRank <= 17) { + $fSearchDiam = 0.6; + } elseif ($iMaxRank <= 18) { + $fSearchDiam = 0.2; + } elseif ($iMaxRank <= 25) { + $fSearchDiam = 0.1; + } + + $sSQL = 'SELECT place_id'; $sSQL .= ' FROM ('; $sSQL .= ' SELECT place_id, rank_address,country_code, geometry,'; $sSQL .= ' ST_distance('.$sPointSQL.', geometry) as distance'; @@ -160,12 +191,13 @@ class ReverseGeocode if ($iRankAddress = 16) { // using rank_search because of a better differentiation for place nodes at rank_address 16 $sSQL .= ' AND rank_search > '.$iRankSearch; - $sSQL .= ' AND rank_search <= ' .Min(25, $iMaxRank); + $sSQL .= ' AND rank_search <= ' .$iMaxRank; $sSQL .= ' AND class = \'place\''; } else { $sSQL .= ' AND rank_address > '.$iRankAddress; - $sSQL .= ' AND rank_address <= ' .Min(25, $iMaxRank); + $sSQL .= ' AND rank_address <= ' .$iMaxRank; } + $sSQL .= ' AND ST_DWithin('.$sPointSQL.', geometry, '.$fSearchDiam.')'; $sSQL .= ' AND type != \'postcode\''; $sSQL .= ' AND name IS NOT NULL '; $sSQL .= ' and indexed_status = 0 and linked_place_id is null'; @@ -177,7 +209,7 @@ class ReverseGeocode $sSQL .= ' WHERE ST_CONTAINS((SELECT geometry FROM placex WHERE place_id = '.$iPlaceID.'), geometry )'; $sSQL .= ' ORDER BY distance ASC, rank_address DESC'; $sSQL .= ' LIMIT 1'; - + if (CONST_Debug) var_dump($sSQL); $aPlacNode = chksql( $this->oDB->getRow($sSQL), @@ -190,7 +222,7 @@ class ReverseGeocode } return $aPoly; } - + public function lookup($fLat, $fLon, $bDoInterpolation = true) { @@ -202,7 +234,10 @@ class ReverseGeocode public function lookupPoint($sPointSQL, $bDoInterpolation = true) { - + // starts if the search is on POI or street level, + // searches for the nearest POI or street, + // if a street is found and a POI is searched for, + // the nearest POI which the found street is a parent of is choosen. $iMaxRank = $this->iMaxRank; // Find the nearest point @@ -211,7 +246,7 @@ class ReverseGeocode $aPlace = null; $fMaxAreaDistance = 1; $bIsTigerStreet = false; - + // for POI or street level if ($iMaxRank >= 26) { $sSQL = 'select place_id,parent_place_id,rank_address,country_code,'; @@ -240,14 +275,13 @@ class ReverseGeocode $this->oDB->getRow($sSQL), 'Could not determine closest place.' ); - + if ($aPlace) { - $iDistance = $aPlace['distance']; $iPlaceID = $aPlace['place_id']; $oResult = new Result($iPlaceID); $iParentPlaceID = $aPlace['parent_place_id']; - + if ($bDoInterpolation && $iMaxRank >= 30) { if ($aPlace['rank_address'] <=27) { $iDistance = 0.001; @@ -259,7 +293,7 @@ class ReverseGeocode $oResult->iHouseNumber = closestHouseNumber($aHouse); } } - + // if street and maxrank > streetlevel if (($aPlace['rank_address'] <=27)&& $iMaxRank > 27) { // find the closest object (up to a certain radius) of which the street is a parent of @@ -285,7 +319,7 @@ class ReverseGeocode $iPlaceID = $aStreet['place_id']; $oResult = new Result($iPlaceID); $iParentPlaceID = $aStreet['parent_place_id']; - + if ($bDoInterpolation && $iMaxRank >= 30) { $aHouse = $this->lookupInterpolation($sPointSQL, $iDistance, $iParentPlaceID); @@ -296,10 +330,10 @@ class ReverseGeocode } } } - + // In the US we can check TIGER data for nearest housenumber if (CONST_Use_US_Tiger_Data && $aPlace['country_code'] == 'us' && $this->iMaxRank >= 28) { - $fSearchDiam = $aPlace['rank_search'] > 28 ? $aPlace['distance'] : 0.001; + $fSearchDiam = $aPlace['rank_address'] > 28 ? $aPlace['distance'] : 0.001; $sSQL = 'SELECT place_id,parent_place_id,30 as rank_search,'; $sSQL .= 'ST_LineLocatePoint(linegeo,'.$sPointSQL.') as fraction,'; $sSQL .= 'ST_distance('.$sPointSQL.', linegeo) as distance,';