changed reverse geocode algorithm

This commit is contained in:
gemo1011 2018-04-20 10:00:27 +02:00
parent 1d0da944a6
commit d0741f21b1

View File

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