'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) {
}
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';
- $sSQL .= ' AND rank_address <= ' .$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),
}
}
}
-
+
protected function lookupPolygon($sPointSQL, $iMaxRank)
{
-
+ // searches for polygon where the searchpoint is within
+ // if a polygon is found, placenodes with a higher rank are searched inside the polygon
+
+ // polygon search begins at suburb-level
if ($iMaxRank > 25) $iMaxRank = 25;
-
- $sSQL = 'SELECT * FROM';
- $sSQL .= '(select place_id,parent_place_id,rank_address, rank_search, country_code, geometry';
+ // no polygon search over country-level
+ if ($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\')';
$sSQL .= ' AND rank_address Between 4 AND ' .$iMaxRank;
'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 != $iMaxRank) {
//search diameter for the place node search
if ($iMaxRank <= 4) {
} elseif ($iMaxRank <= 25) {
$fSearchDiam = 0.1;
}
-
- $sSQL = 'SELECT *';
+
+ $sSQL = 'SELECT place_id';
$sSQL .= ' FROM (';
$sSQL .= ' SELECT place_id, rank_address,country_code, geometry,';
$sSQL .= ' ST_distance('.$sPointSQL.', geometry) as distance';
$sSQL .= ' WHERE ST_CONTAINS((SELECT geometry FROM placex WHERE place_id = '.$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),
}
return $aPoly;
}
-
+
public function lookup($fLat, $fLon, $bDoInterpolation = true)
{
public function lookupPoint($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
$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,';
$this->oDB->getRow($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;
$oResult->iHouseNumber = closestHouseNumber($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
$iPlaceID = $aStreet['place_id'];
$oResult = new Result($iPlaceID);
$iParentPlaceID = $aStreet['parent_place_id'];
-
+
if ($bDoInterpolation && $iMaxRank >= 30) {
$aHouse = $this->lookupInterpolation($sPointSQL, $iDistance, $iParentPlaceID);
}
}
}
-
+
// 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,';
projects / nominatim.git / blobdiff