X-Git-Url: https://git.openstreetmap.org./nominatim.git/blobdiff_plain/e90087a063698139beb087f24c068ce04171e8bf..c9a63508943d92cfe2a1f5d2c12454662bb46770:/lib/ReverseGeocode.php diff --git a/lib/ReverseGeocode.php b/lib/ReverseGeocode.php index e40ce6cc..ff20691a 100644 --- a/lib/ReverseGeocode.php +++ b/lib/ReverseGeocode.php @@ -1,171 +1,352 @@ oDB =& $oDB; - } - - function setLanguagePreference($aLangPref) - { - $this->aLangPrefOrder = $aLangPref; - } - - function setLatLon($fLat, $fLon) - { - $this->fLat = (float)$fLat; - $this->fLon = (float)$fLon; - } - - function setRank($iRank) - { - $this->iMaxRank = $iRank; - } - - function setZoom($iZoom) - { - // Zoom to rank, this could probably be calculated but a lookup gives fine control - $aZoomRank = array( - 0 => 2, // Continent / Sea - 1 => 2, - 2 => 2, - 3 => 4, // Country - 4 => 4, - 5 => 8, // State - 6 => 10, // Region - 7 => 10, - 8 => 12, // County - 9 => 12, - 10 => 17, // City - 11 => 17, - 12 => 18, // Town / Village - 13 => 18, - 14 => 22, // Suburb - 15 => 22, - 16 => 26, // Street, TODO: major street? - 17 => 26, - 18 => 30, // or >, Building - 19 => 30, // or >, Building - ); - $this->iMaxRank = (isset($iZoom) && isset($aZoomRank[$iZoom]))?$aZoomRank[$iZoom]:28; - } - - function lookup() - { - $sPointSQL = 'ST_SetSRID(ST_Point('.$this->fLon.','.$this->fLat.'),4326)'; - $iMaxRank = $this->iMaxRank; - $iMaxRank_orig = $this->iMaxRank; - - // Find the nearest point - $fSearchDiam = 0.0004; - $iPlaceID = null; - $aArea = false; - $fMaxAreaDistance = 1; - $bIsInUnitedStates = false; - $bPlaceIsTiger = false; - while(!$iPlaceID && $fSearchDiam < $fMaxAreaDistance) - { - $fSearchDiam = $fSearchDiam * 2; - - // If we have to expand the search area by a large amount then we need a larger feature - // then there is a limit to how small the feature should be - if ($fSearchDiam > 2 && $iMaxRank > 4) $iMaxRank = 4; - if ($fSearchDiam > 1 && $iMaxRank > 9) $iMaxRank = 8; - if ($fSearchDiam > 0.8 && $iMaxRank > 10) $iMaxRank = 10; - if ($fSearchDiam > 0.6 && $iMaxRank > 12) $iMaxRank = 12; - if ($fSearchDiam > 0.2 && $iMaxRank > 17) $iMaxRank = 17; - if ($fSearchDiam > 0.1 && $iMaxRank > 18) $iMaxRank = 18; - if ($fSearchDiam > 0.008 && $iMaxRank > 22) $iMaxRank = 22; - if ($fSearchDiam > 0.001 && $iMaxRank > 26) $iMaxRank = 26; - - $sSQL = 'select place_id,parent_place_id,rank_search,calculated_country_code from placex'; - $sSQL .= ' WHERE ST_DWithin('.$sPointSQL.', geometry, '.$fSearchDiam.')'; - $sSQL .= ' and rank_search != 28 and rank_search >= '.$iMaxRank; - $sSQL .= ' and (name is not null or housenumber is not null)'; - $sSQL .= ' and class not in (\'waterway\',\'railway\',\'tunnel\',\'bridge\',\'man_made\')'; - $sSQL .= ' and indexed_status = 0 '; - $sSQL .= ' and (ST_GeometryType(geometry) not in (\'ST_Polygon\',\'ST_MultiPolygon\') '; - $sSQL .= ' OR ST_DWithin('.$sPointSQL.', centroid, '.$fSearchDiam.'))'; - $sSQL .= ' ORDER BY ST_distance('.$sPointSQL.', geometry) ASC limit 1'; - if (CONST_Debug) var_dump($sSQL); - $aPlace = $this->oDB->getRow($sSQL); - if (PEAR::IsError($aPlace)) - { - failInternalError("Could not determine closest place.", $sSQL, $aPlace); - } - $iPlaceID = $aPlace['place_id']; - $iParentPlaceID = $aPlace['parent_place_id']; - $bIsInUnitedStates = ($aPlace['calculated_country_code'] == 'us'); - } - - // Only street found? If it's in the US we can check TIGER data for nearest housenumber - if ($bIsInUnitedStates && $iMaxRank_orig >= 28 && $iPlaceID && ($aPlace['rank_search'] == 26 || $aPlace['rank_search'] == 27 )) - { - $fSearchDiam = 0.001; - $sSQL = 'SELECT place_id,parent_place_id,30 as rank_search '; - if (CONST_Debug) { $sSQL .= ', housenumber, ST_distance('.$sPointSQL.', centroid) as distance, st_y(centroid) as lat, st_x(centroid) as lon'; } - $sSQL .= ' FROM location_property_tiger WHERE parent_place_id = '.$iPlaceID; - $sSQL .= ' AND ST_DWithin('.$sPointSQL.', centroid, '.$fSearchDiam.')'; - $sSQL .= ' ORDER BY ST_distance('.$sPointSQL.', centroid) ASC limit 1'; - - - // print all house numbers in the parent (street) - if (CONST_Debug) - { - $sSQL = preg_replace('/limit 1/', 'limit 100', $sSQL); - var_dump($sSQL); - - $aAllHouses = $this->oDB->getAll($sSQL); - foreach($aAllHouses as $i) - { - echo $i['housenumber'] . ' | ' . $i['distance'] * 1000 . ' | ' . $i['lat'] . ' | ' . $i['lon']. ' | '. "
\n"; - } - } - - $aPlaceTiger = $this->oDB->getRow($sSQL); - if (PEAR::IsError($aPlace)) - { - failInternalError("Could not determine closest Tiger place.", $sSQL, $aPlaceTiger); - } - if ($aPlaceTiger) - { - if (CONST_Debug) var_dump('found Tiger place', $aPlaceTiger); - $bPlaceIsTiger = true; - $aPlace = $aPlaceTiger; - $iPlaceID = $aPlaceTiger['place_id']; - $iParentPlaceID = $aPlaceTiger['parent_place_id']; // the street - } - } - - // The point we found might be too small - use the address to find what it is a child of - if ($iPlaceID && $iMaxRank < 28) - { - if ($aPlace['rank_search'] > 28 && $iParentPlaceID && !$bPlaceIsTiger) - { - $iPlaceID = $iParentPlaceID; - } - $sSQL = "select address_place_id from place_addressline where place_id = $iPlaceID order by abs(cached_rank_address - $iMaxRank) asc,cached_rank_address desc,isaddress desc,distance desc limit 1"; - $iPlaceID = $this->oDB->getOne($sSQL); - if (PEAR::IsError($iPlaceID)) - { - failInternalError("Could not get parent for place.", $sSQL, $iPlaceID); - } - if (!$iPlaceID) - { - $iPlaceID = $aPlace['place_id']; - } - } - - return array('place_id' => $iPlaceID, - 'type' => $bPlaceIsTiger ? 'tiger' : 'osm'); - } - } -?> + +namespace Nominatim; + +require_once(CONST_BasePath.'/lib/Result.php'); + +class ReverseGeocode +{ + protected $oDB; + protected $iMaxRank = 28; + + + public function __construct(&$oDB) + { + $this->oDB =& $oDB; + } + + + public function setZoom($iZoom) + { + // Zoom to rank, this could probably be calculated but a lookup gives fine control + $aZoomRank = array( + 0 => 2, // Continent / Sea + 1 => 2, + 2 => 2, + 3 => 4, // Country + 4 => 4, + 5 => 8, // State + 6 => 10, // Region + 7 => 10, + 8 => 12, // County + 9 => 12, + 10 => 17, // City + 11 => 17, + 12 => 18, // Town / Village + 13 => 18, + 14 => 22, // Suburb + 15 => 22, + 16 => 26, // Street, TODO: major street? + 17 => 26, + 18 => 30, // or >, Building + 19 => 30, // or >, Building + ); + $this->iMaxRank = (isset($iZoom) && isset($aZoomRank[$iZoom]))?$aZoomRank[$iZoom]:28; + } + + /** + * Find the closest interpolation with the given search diameter. + * + * @param string $sPointSQL Reverse geocoding point as SQL + * @param float $fSearchDiam Search diameter + * + * @return Record of the interpolation or null. + */ + protected function lookupInterpolation($sPointSQL, $fSearchDiam) + { + $sSQL = 'SELECT place_id, parent_place_id, 30 as rank_search,'; + $sSQL .= ' ST_LineLocatePoint(linegeo,'.$sPointSQL.') as fraction,'; + $sSQL .= ' startnumber, endnumber, interpolationtype,'; + $sSQL .= ' ST_Distance(linegeo,'.$sPointSQL.') as distance'; + $sSQL .= ' FROM location_property_osmline'; + $sSQL .= ' WHERE ST_DWithin('.$sPointSQL.', linegeo, '.$fSearchDiam.')'; + $sSQL .= ' and indexed_status = 0 and startnumber is not NULL '; + $sSQL .= ' ORDER BY distance ASC limit 1'; + + return $this->oDB->getRow( + $sSQL, + null, + 'Could not determine closest housenumber on an osm interpolation line.' + ); + } + + protected function lookupLargeArea($sPointSQL, $iMaxRank) + { + $oResult = null; + + if ($iMaxRank > 4) { + $aPlace = $this->lookupPolygon($sPointSQL, $iMaxRank); + if ($aPlace) { + return new Result($aPlace['place_id']); + } + } + + // If no polygon which contains the searchpoint is found, + // searches in the country_osm_grid table for a polygon. + return $this->lookupInCountry($sPointSQL, $iMaxRank); + } + + protected function lookupInCountry($sPointSQL, $iMaxRank) + { + // searches for polygon in table country_osm_grid which contains the searchpoint + // 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'; + + $sCountryCode = $this->oDB->getOne( + $sSQL, + null, + 'Could not determine country polygon containing the point.' + ); + if ($sCountryCode) { + if ($iMaxRank > 4) { + // look for place nodes with the given country code + $sSQL = 'SELECT place_id FROM'; + $sSQL .= ' (SELECT place_id, rank_search,'; + $sSQL .= ' ST_distance('.$sPointSQL.', geometry) as distance'; + $sSQL .= ' FROM placex'; + $sSQL .= ' WHERE osm_type = \'N\''; + $sSQL .= ' AND country_code = \''.$sCountryCode.'\''; + $sSQL .= ' AND rank_search between 5 and ' .min(25, $iMaxRank); + $sSQL .= ' AND class = \'place\' 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, 1.8)) p '; + $sSQL .= 'WHERE distance <= reverse_place_diameter(rank_search)'; + $sSQL .= ' ORDER BY rank_search DESC, distance ASC'; + $sSQL .= ' LIMIT 1'; + + if (CONST_Debug) var_dump($sSQL); + $aPlace = $this->oDB->getRow($sSQL, null, 'Could not determine place node.'); + if ($aPlace) { + return new Result($aPlace['place_id']); + } + } + + // still nothing, then return the country object + $sSQL = 'SELECT place_id, ST_distance('.$sPointSQL.', centroid) as distance'; + $sSQL .= ' FROM placex'; + $sSQL .= ' WHERE country_code = \''.$sCountryCode.'\''; + $sSQL .= ' AND rank_search = 4 AND rank_address = 4'; + $sSQL .= ' AND class in (\'boundary\', \'place\')'; + $sSQL .= ' AND linked_place_id is null'; + $sSQL .= ' ORDER BY distance ASC'; + + if (CONST_Debug) var_dump($sSQL); + $aPlace = $this->oDB->getRow($sSQL, null, 'Could not determine place node.'); + if ($aPlace) { + return new Result($aPlace['place_id']); + } + } + + return null; + } + + /** + * Search for areas or nodes for areas or nodes between state and suburb level. + * + * @param string $sPointSQL Search point as SQL string. + * @param int $iMaxRank Maximum address rank of the feature. + * + * @return Record of the found feature or null. + * + * Searches first for polygon that contains the search point. + * If such a polygon is found, place nodes with a higher rank are + * searched inside the polygon. + */ + protected function lookupPolygon($sPointSQL, $iMaxRank) + { + // polygon search begins at suburb-level + if ($iMaxRank > 25) $iMaxRank = 25; + // no polygon search over country-level + if ($iMaxRank < 5) $iMaxRank = 5; + // 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\')'; + $sSQL .= ' AND rank_address Between 5 AND ' .$iMaxRank; + $sSQL .= ' AND geometry && '.$sPointSQL; + $sSQL .= ' AND type != \'postcode\' '; + $sSQL .= ' AND name is not null'; + $sSQL .= ' AND indexed_status = 0 and linked_place_id is null'; + $sSQL .= ' ORDER BY rank_address DESC LIMIT 50 ) as a'; + $sSQL .= ' WHERE ST_CONTAINS(geometry, '.$sPointSQL.' )'; + $sSQL .= ' ORDER BY rank_address DESC LIMIT 1'; + + $aPoly = $this->oDB->getRow($sSQL, null, '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 place_id FROM '; + $sSQL .= '(SELECT place_id, rank_search, country_code, geometry,'; + $sSQL .= ' ST_distance('.$sPointSQL.', geometry) as distance'; + $sSQL .= ' FROM placex'; + $sSQL .= ' WHERE osm_type = \'N\''; + // using rank_search because of a better differentiation + // for place nodes at rank_address 16 + $sSQL .= ' AND rank_search > '.$iRankSearch; + $sSQL .= ' AND rank_search <= '.$iMaxRank; + $sSQL .= ' AND class = \'place\''; + $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, reverse_place_diameter('.$iRankSearch.'::smallint))'; + $sSQL .= ' ORDER BY distance ASC,'; + $sSQL .= ' rank_address DESC'; + $sSQL .= ' limit 500) as a'; + $sSQL .= ' WHERE ST_CONTAINS((SELECT geometry FROM placex WHERE place_id = '.$iPlaceID.'), geometry )'; + $sSQL .= ' AND distance <= reverse_place_diameter(rank_search)'; + $sSQL .= ' ORDER BY distance ASC, rank_search DESC'; + $sSQL .= ' LIMIT 1'; + + if (CONST_Debug) var_dump($sSQL); + $aPlacNode = $this->oDB->getRow($sSQL, null, 'Could not determine place node.'); + if ($aPlacNode) { + return $aPlacNode; + } + } + } + return $aPoly; + } + + + public function lookup($fLat, $fLon, $bDoInterpolation = true) + { + return $this->lookupPoint( + 'ST_SetSRID(ST_Point('.$fLon.','.$fLat.'),4326)', + $bDoInterpolation + ); + } + + public function lookupPoint($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 + $fSearchDiam = 0.006; + $oResult = null; + $aPlace = null; + + // for POI or street level + if ($iMaxRank >= 26) { + $sSQL = 'select place_id,parent_place_id,rank_address,country_code,'; + $sSQL .= ' ST_distance('.$sPointSQL.', geometry) as distance'; + $sSQL .= ' FROM '; + $sSQL .= ' placex'; + $sSQL .= ' WHERE ST_DWithin('.$sPointSQL.', geometry, '.$fSearchDiam.')'; + $sSQL .= ' AND'; + // only streets + if ($iMaxRank == 26) { + $sSQL .= ' rank_address = 26'; + } else { + $sSQL .= ' rank_address between 26 and '.$iMaxRank; + } + $sSQL .= ' and (name is not null or housenumber is not null'; + $sSQL .= ' or rank_address between 26 and 27)'; + $sSQL .= ' and (rank_address between 26 and 27'; + $sSQL .= ' or ST_GeometryType(geometry) != \'ST_LineString\')'; + $sSQL .= ' and class not in (\'boundary\')'; + $sSQL .= ' and indexed_status = 0 and linked_place_id is null'; + $sSQL .= ' and (ST_GeometryType(geometry) not in (\'ST_Polygon\',\'ST_MultiPolygon\') '; + $sSQL .= ' OR ST_DWithin('.$sPointSQL.', centroid, '.$fSearchDiam.'))'; + $sSQL .= ' ORDER BY distance ASC limit 1'; + if (CONST_Debug) var_dump($sSQL); + $aPlace = $this->oDB->getRow($sSQL, null, 'Could not determine closest place.'); + + if (CONST_Debug) var_dump($aPlace); + if ($aPlace) { + $iPlaceID = $aPlace['place_id']; + $oResult = new Result($iPlaceID); + $iRankAddress = $aPlace['rank_address']; + $iParentPlaceID = $aPlace['parent_place_id']; + } + + if ($bDoInterpolation && $iMaxRank >= 30) { + $fDistance = $fSearchDiam; + if ($aPlace) { + // We can't reliably go from the closest street to an + // interpolation line because the closest interpolation + // may have a different street segments as a parent. + // Therefore allow an interpolation line to take precendence + // even when the street is closer. + $fDistance = $iRankAddress < 28 ? 0.001 : $aPlace['distance']; + } + + $aHouse = $this->lookupInterpolation($sPointSQL, $fDistance); + + if ($aHouse) { + $oResult = new Result($aHouse['place_id'], Result::TABLE_OSMLINE); + $oResult->iHouseNumber = closestHouseNumber($aHouse); + $aPlace = $aHouse; + $iRankAddress = 30; + } + } + + if ($aPlace) { + // if street and maxrank > streetlevel + if ($iRankAddress <= 27 && $iMaxRank > 27) { + // find the closest object (up to a certain radius) of which the street is a parent of + $sSQL = ' select place_id,'; + $sSQL .= ' ST_distance('.$sPointSQL.', geometry) as distance'; + $sSQL .= ' FROM '; + $sSQL .= ' placex'; + // radius ? + $sSQL .= ' WHERE ST_DWithin('.$sPointSQL.', geometry, 0.001)'; + $sSQL .= ' AND parent_place_id = '.$iPlaceID; + $sSQL .= ' and rank_address != 28'; + $sSQL .= ' and ST_GeometryType(geometry) != \'ST_LineString\''; + $sSQL .= ' and (name is not null or housenumber is not null)'; + $sSQL .= ' and class not in (\'boundary\')'; + $sSQL .= ' and indexed_status = 0 and linked_place_id is null'; + $sSQL .= ' ORDER BY distance ASC limit 1'; + if (CONST_Debug) var_dump($sSQL); + $aStreet = $this->oDB->getRow($sSQL, null, 'Could not determine closest place.'); + if ($aStreet) { + if (CONST_Debug) var_dump($aStreet); + $oResult = new Result($aStreet['place_id']); + } + } + + // In the US we can check TIGER data for nearest housenumber + if (CONST_Use_US_Tiger_Data + && $iRankAddress <= 27 + && $aPlace['country_code'] == 'us' + && $this->iMaxRank >= 28 + ) { + $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,'; + $sSQL .= 'startnumber,endnumber,interpolationtype'; + $sSQL .= ' FROM location_property_tiger WHERE parent_place_id = '.$oResult->iId; + $sSQL .= ' AND ST_DWithin('.$sPointSQL.', linegeo, 0.001)'; + $sSQL .= ' ORDER BY distance ASC limit 1'; + if (CONST_Debug) var_dump($sSQL); + $aPlaceTiger = $this->oDB->getRow($sSQL, null, 'Could not determine closest Tiger place.'); + if ($aPlaceTiger) { + if (CONST_Debug) var_dump('found Tiger housenumber', $aPlaceTiger); + $oResult = new Result($aPlaceTiger['place_id'], Result::TABLE_TIGER); + $oResult->iHouseNumber = closestHouseNumber($aPlaceTiger); + } + } + } else { + // if no POI or street is found ... + $oResult = $this->lookupLargeArea($sPointSQL, 25); + } + } else { + // lower than street level ($iMaxRank < 26 ) + $oResult = $this->lookupLargeArea($sPointSQL, $iMaxRank); + } + return $oResult; + } +}