<?php
+namespace Nominatim;
+
class ReverseGeocode
{
protected $oDB;
protected $iMaxRank = 28;
- function ReverseGeocode(&$oDB)
+
+ public function __construct(&$oDB)
{
$this->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(
$this->iMaxRank = (isset($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;
// Find the nearest point
$fSearchDiam = 0.0004;
$iPlaceID = null;
- $aArea = false;
$fMaxAreaDistance = 1;
$bIsInUnitedStates = false;
$bPlaceIsTiger = false;
if ($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';
$sSQL .= ' OR ST_DWithin('.$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']. ' | '. "<br>\n";
- }
- }
- $aPlaceLine = chksql($this->oDB->getRow($sSQL),
- "Could not determine closest housenumber on an osm interpolation line.");
+ // If a house was found make sure there isn't an interpolation line
+ // that is closer
+ if ($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) {
- 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;
- }
+ // 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 )) {
$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
}
}
- $aPlaceTiger = chksql($this->oDB->getRow($sSQL),
- "Could not determine closest Tiger place.");
+ $aPlaceTiger = chksql(
+ $this->oDB->getRow($sSQL),
+ "Could not determine closest Tiger place."
+ );
if ($aPlaceTiger) {
if (CONST_Debug) var_dump('found Tiger housenumber', $aPlaceTiger);
$bPlaceIsTiger = true;
if ($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.");
+ $iPlaceID = chksql($this->oDB->getOne($sSQL), "Could not get parent for place.");
if (!$iPlaceID) {
$iPlaceID = $aPlace['place_id'];
}
'fraction' => ($bPlaceIsTiger || $bPlaceIsLine) ? $fFraction : -1
);
}
-
}
projects / nominatim.git / blobdiff