]> git.openstreetmap.org Git - nominatim.git/blobdiff - lib/ReverseGeocode.php
Merge remote-tracking branch 'upstream/master'
[nominatim.git] / lib / ReverseGeocode.php
index b523d0aaa9b54a726389691596d28eea5c2a9d31..27f8c89cb5b3d90e555d1b3f76984cb32773da39 100644 (file)
 <?php
-       class ReverseGeocode
-       {
-               protected $oDB;
-               protected $iMaxRank = 28;
-
-               function ReverseGeocode(&$oDB)
-               {
-                       $this->oDB =& $oDB;
-               }
-
-               function setZoom($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
-                               );
-                       $this->iMaxRank = (isset($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)
-               {
-                       $sPointSQL = 'ST_SetSRID(ST_Point('.$fLon.','.$fLat.'),4326)';
-                       $iMaxRank = $this->iMaxRank;
-
-                       // Find the nearest point
-                       $fSearchDiam = 0.0004;
-                       $iPlaceID = null;
-                       $aArea = false;
-                       $fMaxAreaDistance = 1;
-                       $bIsInUnitedStates = false;
-                       $bPlaceIsTiger = false;
-                       $bPlaceIsLine = false;
-                       while(!$iPlaceID && $fSearchDiam < $fMaxAreaDistance)
-                       {
-                               $fSearchDiam = $fSearchDiam * 2;
-
-                               // If we have to expand the search area by a large amount then we need a larger feature
-                               // then there is a limit to how small the feature should be
-                               if ($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) $iMaxRank = 26;
-
-                               $sSQL = 'select place_id,parent_place_id,rank_search,calculated_country_code';
-                               $sSQL .= ' FROM placex';
-                               $sSQL .= ' WHERE ST_DWithin('.$sPointSQL.', geometry, '.$fSearchDiam.')';
-                               $sSQL .= ' and rank_search != 28 and rank_search >= '.$iMaxRank;
-                               $sSQL .= ' and (name is not null or housenumber is not null)';
-                               $sSQL .= ' and class not in (\'waterway\',\'railway\',\'tunnel\',\'bridge\',\'man_made\')';
-                               $sSQL .= ' and indexed_status = 0 ';
-                               $sSQL .= ' and (ST_GeometryType(geometry) not in (\'ST_Polygon\',\'ST_MultiPolygon\') ';
-                               $sSQL .= ' OR ST_DWithin('.$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.");
-                               $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($sSQL),
-                                                    "Could not determine closest housenumber on an osm interpolation line.");
-                               if ($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;
-                                       }
-                               }
-                       }
-                       
-                       // 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';
-                               //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)
-                               {
-                                       $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";
-                                       }
-                               }
-
-                               $aPlaceTiger = chksql($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;
-                                       $iPlaceID = $aPlaceTiger['place_id'];
-                                       $iParentPlaceID = $aPlaceTiger['parent_place_id']; // the street
-                                       $fFraction = $aPlaceTiger['fraction'];
-                                       $iMaxRank = 30;
-                               }
-                       }
-
-                       // The point we found might be too small - use the address to find what it is a child of
-                       if ($iPlaceID && $iMaxRank < 28)
-                       {
-                               if (($aPlace['rank_search'] > 28 || $bPlaceIsTiger || $bPlaceIsLine) && $iParentPlaceID)
-                               {
-                                       $iPlaceID = $iParentPlaceID;
-                               }
-                               $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 = $aPlace['place_id'];
-                               }
-                       }
-                       return array('place_id' => $iPlaceID,
-                                               'type' => $bPlaceIsTiger ? 'tiger' : ($bPlaceIsLine ? 'interpolation' : 'osm'),
-                                               'fraction' => ($bPlaceIsTiger || $bPlaceIsLine) ? $fFraction : -1);
-               }
-               
-       }
-?>
+
+namespace Nominatim;
+
+require_once(CONST_BasePath.'/lib/Result.php');
+
+class ReverseGeocode
+{
+    protected $oDB;
+    protected $iMaxRank = 28;
+
+
+    public function __construct(&$oDB)
+    {
+        $this->oDB =& $oDB;
+    }
+
+
+    public function setZoom($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
+                     );
+        $this->iMaxRank = (isset($iZoom) && isset($aZoomRank[$iZoom]))?$aZoomRank[$iZoom]:28;
+    }
+
+    /**
+     * 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 .= '  startnumber, endnumber, interpolationtype,';
+        $sSQL .= '  ST_Distance(linegeo,'.$sPointSQL.') as distance';
+        $sSQL .= ' FROM location_property_osmline';
+        $sSQL .= ' WHERE ST_DWithin('.$sPointSQL.', linegeo, '.$fSearchDiam.')';
+        $sSQL .= ' and indexed_status = 0 and startnumber is not NULL ';
+        $sSQL .= ' ORDER BY distance ASC limit 1';
+
+        return chksql(
+            $this->oDB->getRow($sSQL),
+            'Could not determine closest housenumber on an osm interpolation line.'
+        );
+    }
+
+    public function lookup($fLat, $fLon, $bDoInterpolation = true)
+    {
+        return $this->lookupPoint(
+            'ST_SetSRID(ST_Point('.$fLon.','.$fLat.'),4326)',
+            $bDoInterpolation
+        );
+    }
+
+    public function lookupPoint($sPointSQL, $bDoInterpolation = true)
+    {
+        $iMaxRank = $this->iMaxRank;
+
+        // Find the nearest point
+        $fSearchDiam = 0.0004;
+        $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;
+            }
+
+            $sSQL = 'select place_id,parent_place_id,rank_search,country_code,';
+            $sSQL .= '  ST_distance('.$sPointSQL.', geometry) as distance';
+            $sSQL .= ' FROM ';
+            if ($fSearchDiam < 0.01) {
+                $sSQL .= ' placex';
+                $sSQL .= '   WHERE ST_DWithin('.$sPointSQL.', geometry, '.$fSearchDiam.')';
+                $sSQL .= '   AND';
+            } else {
+                $sSQL .= ' (SELECT * FROM placex ';
+                $sSQL .= '   WHERE ST_DWithin('.$sPointSQL.', geometry, '.$fSearchDiam.')';
+                $sSQL .= '   LIMIT 1000) as p WHERE';
+            }
+            $sSQL .= ' rank_search != 28 and rank_search >= '.$iMaxRank;
+            $sSQL .= ' and (name is not null or housenumber is not null';
+            $sSQL .= '      or rank_search between 26 and 27)';
+            $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\') ';
+            $sSQL .= ' OR ST_DWithin('.$sPointSQL.', centroid, '.$fSearchDiam.'))';
+            $sSQL .= ' ORDER BY distance ASC limit 1';
+            if (CONST_Debug) var_dump($sSQL);
+            $aPlace = chksql(
+                $this->oDB->getRow($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,
+                            $aPlace['distance']
+                        );
+                        if ($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'];
+                        }
+                    }
+                }
+            }
+        }
+
+        // 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;
+    }
+}