X-Git-Url: https://git.openstreetmap.org./nominatim.git/blobdiff_plain/effd8e12af440586594a18a04beb33abed260d15..8be702bf602118b19d4482566e4239c023b7fe54:/lib/ReverseGeocode.php diff --git a/lib/ReverseGeocode.php b/lib/ReverseGeocode.php index 3d1a51ce..b3899e3b 100644 --- a/lib/ReverseGeocode.php +++ b/lib/ReverseGeocode.php @@ -1,46 +1,78 @@ oDB =& $oDB; } - function setZoom($iZoom) + + 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 - ); + 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; } - // returns { place_id =>, type => '(osm|tiger)' } - // fails if no place was found - function lookup($fLat, $fLon, $bDoInterpolation = true) + /** + * 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'; + $sSQL .= ' , ST_Distance(linegeo,'.$sPointSQL.') as distance'; + $sSQL .= ' FROM location_property_osmline'; + $sSQL .= ' WHERE ST_DWithin('.$sPointSQL.', linegeo, '.$fSearchDiam.')'; + $sSQL .= ' and indexed_status = 0 '; + $sSQL .= ' ORDER BY ST_distance('.$sPointSQL.', linegeo) ASC limit 1'; + + return chksql( + $this->oDB->getRow($sSQL), + "Could not determine closest housenumber on an osm interpolation line." + ); + } + + /* lookup() + * returns { place_id =>, type => '(osm|tiger)' } + * fails if no place was found + */ + + + public function lookup($fLat, $fLon, $bDoInterpolation = true) { $sPointSQL = 'ST_SetSRID(ST_Point('.$fLon.','.$fLat.'),4326)'; $iMaxRank = $this->iMaxRank; @@ -48,13 +80,11 @@ class ReverseGeocode // Find the nearest point $fSearchDiam = 0.0004; $iPlaceID = null; - $aArea = false; $fMaxAreaDistance = 1; $bIsInUnitedStates = false; $bPlaceIsTiger = false; $bPlaceIsLine = false; - while(!$iPlaceID && $fSearchDiam < $fMaxAreaDistance) - { + while (!$iPlaceID && $fSearchDiam < $fMaxAreaDistance) { $fSearchDiam = $fSearchDiam * 2; // If we have to expand the search area by a large amount then we need a larger feature @@ -66,7 +96,27 @@ class ReverseGeocode if ($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) $iMaxRank = 26; + if ($fSearchDiam > 0.001 && $iMaxRank > 26) { + // try with interpolations before continuing + if ($bDoInterpolation) { + // no house found, try with interpolations + $aPlaceLine = $this->lookupInterpolation($sPointSQL, $fSearchDiam/2); + + if ($aPlaceLine) { + // interpolation is closer to point than placex house + $bPlaceIsLine = true; + $aPlace = $aPlaceLine; + $iPlaceID = $aPlaceLine['place_id']; + $iParentPlaceID = $aPlaceLine['parent_place_id']; // the street + $fFraction = $aPlaceLine['fraction']; + $iMaxRank = 30; + + break; + } + } + // no interpolation found, continue search + $iMaxRank = 26; + } $sSQL = 'select place_id,parent_place_id,rank_search,calculated_country_code'; $sSQL .= ' FROM placex'; @@ -79,103 +129,64 @@ class ReverseGeocode $sSQL .= ' OR ST_DWithin('.$sPointSQL.', centroid, '.$fSearchDiam.'))'; $sSQL .= ' ORDER BY ST_distance('.$sPointSQL.', geometry) ASC limit 1'; if (CONST_Debug) var_dump($sSQL); - $aPlace = chksql($this->oDB->getRow($sSQL), - "Could not determine closest place."); + $aPlace = chksql( + $this->oDB->getRow($sSQL), + "Could not determine closest place." + ); $iPlaceID = $aPlace['place_id']; $iParentPlaceID = $aPlace['parent_place_id']; $bIsInUnitedStates = ($aPlace['calculated_country_code'] == 'us'); } - // if a street or house was found, look in interpolation lines table - if ($bDoInterpolation && $this->iMaxRank >= 28 && $aPlace && $aPlace['rank_search'] >= 26) - { - // if a house was found, search the interpolation line that is at least as close as the house - $sSQL = 'SELECT place_id, parent_place_id, 30 as rank_search, ST_line_locate_point(linegeo,'.$sPointSQL.') as fraction'; - $sSQL .= ' FROM location_property_osmline'; - $sSQL .= ' WHERE ST_DWithin('.$sPointSQL.', linegeo, '.$fSearchDiam.')'; - $sSQL .= ' and indexed_status = 0 '; - $sSQL .= ' ORDER BY ST_distance('.$sPointSQL.', linegeo) ASC limit 1'; - - if (CONST_Debug) - { - $sSQL = preg_replace('/limit 1/', 'limit 100', $sSQL); - var_dump($sSQL); - $aAllHouses = chksql($this->oDB->getAll($sSQL)); - foreach($aAllHouses as $i) - { - echo $i['housenumber'] . ' | ' . $i['distance'] * 1000 . ' | ' . $i['lat'] . ' | ' . $i['lon']. ' | '. "
\n"; - } - } - $aPlaceLine = chksql($this->oDB->getRow($sSQL), - "Could not determine closest housenumber on an osm interpolation line."); - if ($aPlaceLine) - { - if (CONST_Debug) var_dump('found housenumber in interpolation lines table', $aPlaceLine); - if ($aPlace['rank_search'] == 30) - { - // if a house was already found in placex, we have to find out, - // if the placex house or the interpolated house are closer to the searched point - // distance between point and placex house - $sSQL = 'SELECT ST_distance('.$sPointSQL.', house.geometry) as distance FROM placex as house WHERE house.place_id='.$iPlaceID; - $aDistancePlacex = chksql($this->oDB->getRow($sSQL), - "Could not determine distance between searched point and placex house."); - $fDistancePlacex = $aDistancePlacex['distance']; - // distance between point and interpolated house (fraction on interpolation line) - $sSQL = 'SELECT ST_distance('.$sPointSQL.', ST_LineInterpolatePoint(linegeo, '.$aPlaceLine['fraction'].')) as distance'; - $sSQL .= ' FROM location_property_osmline WHERE place_id = '.$aPlaceLine['place_id']; - $aDistanceInterpolation = chksql($this->oDB->getRow($sSQL), - "Could not determine distance between searched point and interpolated house."); - $fDistanceInterpolation = $aDistanceInterpolation['distance']; - if ($fDistanceInterpolation < $fDistancePlacex) - { - // interpolation is closer to point than placex house - $bPlaceIsLine = true; - $aPlace = $aPlaceLine; - $iPlaceID = $aPlaceLine['place_id']; - $iParentPlaceID = $aPlaceLine['parent_place_id']; // the street - $fFraction = $aPlaceLine['fraction']; - $iMaxRank = 30; - } - // else: nothing to do, take placex house from above - } - else - { - $bPlaceIsLine = true; - $aPlace = $aPlaceLine; - $iPlaceID = $aPlaceLine['place_id']; - $iParentPlaceID = $aPlaceLine['parent_place_id']; // the street - $fFraction = $aPlaceLine['fraction']; - $iMaxRank = 30; - } + // If a house was found make sure there isn't an interpolation line + // that is closer + if ($bDoInterpolation && !$bPlaceIsLine && $aPlace && $aPlace['rank_search'] == 30) { + // get the distance of the house to the search point + $sSQL = 'SELECT ST_distance('.$sPointSQL.', house.geometry)'; + $sSQL .= ' FROM placex as house WHERE house.place_id='.$iPlaceID; + + $fDistancePlacex = chksql( + $this->oDB->getOne($sSQL), + "Could not determine distance between searched point and placex house." + ); + + // look for an interpolation that is closer + $aPlaceLine = $this->lookupInterpolation($sPointSQL, $fDistancePlacex); + + if ($aPlaceLine) { + // interpolation is closer to point than placex house + $bPlaceIsLine = true; + $aPlace = $aPlaceLine; + $iPlaceID = $aPlaceLine['place_id']; + $iParentPlaceID = $aPlaceLine['parent_place_id']; // the street + $fFraction = $aPlaceLine['fraction']; } } - + // Only street found? If it's in the US we can check TIGER data for nearest housenumber - if (CONST_Use_US_Tiger_Data && $bDoInterpolation && $bIsInUnitedStates && $this->iMaxRank >= 28 && $iPlaceID && ($aPlace['rank_search'] == 26 || $aPlace['rank_search'] == 27 )) - { + if (CONST_Use_US_Tiger_Data && $bDoInterpolation && $bIsInUnitedStates && $this->iMaxRank >= 28 && $iPlaceID && ($aPlace['rank_search'] == 26 || $aPlace['rank_search'] == 27 )) { $fSearchDiam = 0.001; - $sSQL = 'SELECT place_id,parent_place_id,30 as rank_search, ST_line_locate_point(linegeo,'.$sPointSQL.') as fraction'; + $sSQL = 'SELECT place_id,parent_place_id,30 as rank_search, ST_LineLocatePoint(linegeo,'.$sPointSQL.') as fraction'; //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.', linegeo, '.$fSearchDiam.')'; //no centroid anymore in Tiger data, now we have lines $sSQL .= ' ORDER BY ST_distance('.$sPointSQL.', linegeo) ASC limit 1'; - if (CONST_Debug) - { + if (CONST_Debug) { $sSQL = preg_replace('/limit 1/', 'limit 100', $sSQL); var_dump($sSQL); $aAllHouses = chksql($this->oDB->getAll($sSQL)); - foreach($aAllHouses as $i) - { + foreach ($aAllHouses as $i) { echo $i['housenumber'] . ' | ' . $i['distance'] * 1000 . ' | ' . $i['lat'] . ' | ' . $i['lon']. ' | '. "
\n"; } } - $aPlaceTiger = chksql($this->oDB->getRow($sSQL), - "Could not determine closest Tiger place."); - if ($aPlaceTiger) - { + $aPlaceTiger = chksql( + $this->oDB->getRow($sSQL), + "Could not determine closest Tiger place." + ); + if ($aPlaceTiger) { if (CONST_Debug) var_dump('found Tiger housenumber', $aPlaceTiger); $bPlaceIsTiger = true; $aPlace = $aPlaceTiger; @@ -187,27 +198,26 @@ class ReverseGeocode } // The point we found might be too small - use the address to find what it is a child of - if ($iPlaceID && $iMaxRank < 28) - { - if (($aPlace['rank_search'] > 28 || $bPlaceIsTiger || $bPlaceIsLine) && $iParentPlaceID) - { + if ($iPlaceID && $iMaxRank < 28) { + if (($aPlace['rank_search'] > 28 || $bPlaceIsTiger || $bPlaceIsLine) && $iParentPlaceID) { $iPlaceID = $iParentPlaceID; + $bPlaceIsLine = false; + $bPlaceIsTiger = false; } $sSQL = 'select address_place_id'; $sSQL .= ' FROM place_addressline'; $sSQL .= " WHERE place_id = $iPlaceID"; $sSQL .= " ORDER BY abs(cached_rank_address - $iMaxRank) asc,cached_rank_address desc,isaddress desc,distance desc"; $sSQL .= ' LIMIT 1'; - $iPlaceID = chksql($this->oDB->getOne($sSQL), - "Could not get parent for place."); - if (!$iPlaceID) - { + $iPlaceID = chksql($this->oDB->getOne($sSQL), "Could not get parent for place."); + if (!$iPlaceID) { $iPlaceID = $aPlace['place_id']; } } - return array('place_id' => $iPlaceID, - 'type' => $bPlaceIsTiger ? 'tiger' : ($bPlaceIsLine ? 'interpolation' : 'osm'), - 'fraction' => ($bPlaceIsTiger || $bPlaceIsLine) ? $fFraction : -1); + return array( + 'place_id' => $iPlaceID, + 'type' => $bPlaceIsTiger ? 'tiger' : ($bPlaceIsLine ? 'interpolation' : 'osm'), + 'fraction' => ($bPlaceIsTiger || $bPlaceIsLine) ? $fFraction : -1 + ); } - }