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) {
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),
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';
$sSQL .= ' LIMIT 1';
protected function lookupPolygon($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
- $oResult = null;
- $aPlace = null;
-
- $sSQL = 'SELECT * FROM';
- $sSQL .= '(select place_id,parent_place_id,rank_address, rank_search, country_code, geometry';
+ // polygon search begins at suburb-level
+ if ($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\' ';
$sSQL .= ' AND name is not null';
'Could not determine polygon containing the point.'
);
if ($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';
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 ';
$sSQL .= ' and indexed_status = 0 and linked_place_id is null';
public function lookupPoint($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
$iParentPlaceID = $aPlace['parent_place_id'];
if ($bDoInterpolation && $iMaxRank >= 30) {
+ if ($aPlace['rank_address'] <=27) {
+ $iDistance = 0.001;
+ }
$aHouse = $this->lookupInterpolation($sPointSQL, $iDistance);
if ($aHouse) {
'Could not determine closest place.'
);
if ($aStreet) {
- $iDistance = $aPlace['distance'];
+ $iDistance = $aStreet['distance'];
$iPlaceID = $aStreet['place_id'];
$oResult = new Result($iPlaceID);
$iParentPlaceID = $aStreet['parent_place_id'];
// 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