]> git.openstreetmap.org Git - nominatim.git/blobdiff - lib/ReverseGeocode.php
Merge branch 'ui-easy-switch-coords' of https://github.com/mtmail/Nominatim
[nominatim.git] / lib / ReverseGeocode.php
index a296114f4759c1405847408e62a1a25130c90914..d955492027e292bc238110feaf9368863743c675 100644 (file)
 <?php
-       class ReverseGeocode
-       {
-               protected $oDB;
-
-               protected $fLat;
-               protected $fLon;
-               protected $iMaxRank = 28;
-
-               protected $aLangPrefOrder = array();
-
-               function ReverseGeocode(&$oDB)
-               {
-                       $this->oDB =& $oDB;
-               }
-
-               function setLanguagePreference($aLangPref)
-               {
-                       $this->aLangPrefOrder = $aLangPref;
-               }
-
-               function setLatLon($fLat, $fLon)
-               {
-                       $this->fLat = (float)$fLat;
-                       $this->fLon = (float)$fLon;
-               }
-
-               function setRank($iRank)
-               {
-                       $this->iMaxRank = $iRank;
-               }
-
-               function setZoom($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;
-               }
-
-               function lookup()
-               {
-                       $sPointSQL = 'ST_SetSRID(ST_Point('.$this->fLon.','.$this->fLat.'),4326)';
-                       $iMaxRank = $this->iMaxRank;
-                       $iMaxRank_orig = $this->iMaxRank;
-
-                       // Find the nearest point
-                       $fSearchDiam = 0.0004;
-                       $iPlaceID = null;
-                       $aArea = false;
-                       $fMaxAreaDistance = 1;
-                       $bIsInUnitedStates = false;
-                       $bPlaceIsTiger = false;
-                       while(!$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 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 = $this->oDB->getRow($sSQL);
-                               if (PEAR::IsError($aPlace))
-                               {
-                                       failInternalError("Could not determine closest place.", $sSQL, $aPlace);
-                               }
-                               $iPlaceID = $aPlace['place_id'];
-                               $iParentPlaceID = $aPlace['parent_place_id'];
-                               $bIsInUnitedStates = ($aPlace['calculated_country_code'] == 'us');
-                       }
-
-                       // Only street found? If it's in the US we can check TIGER data for nearest housenumber
-                       if ($bIsInUnitedStates && $iMaxRank_orig >= 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';
-
-
-                               // print all house numbers in the parent (street)
-                               /*if (CONST_Debug)
-                               {
-                                       $sSQL = preg_replace('/limit 1/', 'limit 100', $sSQL);
-                                       var_dump($sSQL);
-
-                                       $aAllHouses = $this->oDB->getAll($sSQL);
-                                       foreach($aAllHouses as $i)
-                                       {
-                                               echo $i['housenumber'] . ' | ' . $i['distance'] * 1000 . ' | ' . $i['lat'] . ' | ' . $i['lon']. ' | '. "<br>\n";
-                                       }
-                               }*/
-
-                               $aPlaceTiger = $this->oDB->getRow($sSQL);
-                               if (PEAR::IsError($aPlace))
-                               {
-                                       failInternalError("Could not determine closest Tiger place.", $sSQL, $aPlaceTiger);
-                               }
-                               if ($aPlaceTiger)
-                               {
-                                       if (CONST_Debug) var_dump('found Tiger place', $aPlaceTiger);
-                                       $bPlaceIsTiger = true;
-                                       $aPlace = $aPlaceTiger;
-                                       $iPlaceID = $aPlaceTiger['place_id'];
-                                       $iParentPlaceID = $aPlaceTiger['parent_place_id']; // the street
-                    $iFraction = $aPlaceTiger['fraction'];
-                               }
-                       }
-
-                       // The point we found might be too small - use the address to find what it is a child of
-                       if ($iPlaceID && $iMaxRank < 28)
-                       {
-                               if ($aPlace['rank_search'] > 28 && $iParentPlaceID && !$bPlaceIsTiger)
-                               {
-                                       $iPlaceID = $iParentPlaceID;
-                               }
-                               $sSQL = "select address_place_id from place_addressline where place_id = $iPlaceID order by abs(cached_rank_address - $iMaxRank) asc,cached_rank_address desc,isaddress desc,distance desc limit 1";
-                               $iPlaceID = $this->oDB->getOne($sSQL);
-                               if (PEAR::IsError($iPlaceID))
-                               {
-                                       failInternalError("Could not get parent for place.", $sSQL, $iPlaceID);
-                               }
-                               if (!$iPlaceID)
-                               {
-                                       $iPlaceID = $aPlace['place_id'];
-                               }
-                       }
-
-                       return array('place_id' => $iPlaceID,
-                                            'type' => $bPlaceIsTiger ? 'tiger' : 'osm',
-                         'fraction' => $bPlaceIsTiger ? $iFraction : -1 );
-               }
-       }
-?>
+
+namespace Nominatim;
+
+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;
+    }
+
+
+    /* 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;
+        $bPlaceIsLine = false;
+        while (!$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
+            $sSQL = 'SELECT place_id, parent_place_id, 30 as rank_search, ST_LineLocatePoint(linegeo,'.$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;
+            $sSQL = 'SELECT place_id,parent_place_id,30 as rank_search, ST_LineLocatePoint(linegeo,'.$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
+            $sSQL .= ' ORDER BY ST_distance('.$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
+               );
+    }
+}