Add Tagger_Toponyms

include/iTag/Taggers/Tagger_Toponyms.php

@@ -0,0 +1,87 @@
+<?php
+
+/*
+ * Copyright 2013 Jérôme Gasperi
+ *
+ * Licensed under the Apache License, version 2.0 (the "License");
+ * You may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at:
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+ * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+ * License for the specific language governing permissions and limitations
+ * under the License.
+ */
+
+class Tagger_Toponyms extends Tagger {
+    /*
+     * Data references
+     */
+
+    public $references = array(
+        array(
+            'dataset' => 'Geonames',
+            'author' => 'Geonames',
+            'license' => 'Free of Charge',
+            'url' => 'http://www.geonames.org/'
+        )
+    );
+
+    /**
+     * Constructor
+     * 
+     * @param DatabaseHandler $dbh
+     * @param array $config
+     */
+    public function __construct($dbh, $config) {
+        parent::__construct($dbh, $config);
+    }
+
+    /**
+     * Tag metadata
+     * 
+     * @param array $metadata
+     * @param array $options
+     * @return array
+     * @throws Exception
+     */
+    public function tag($metadata, $options = array()) {
+        parent::tag($metadata, $options);
+        return $this->process($metadata['footprint'], $options);
+    }
+
+    /**
+     * Return the closest toponym from centroid that is within the footprint
+     * 
+     * @param string $footprint
+     * @param array $options
+     * 
+     */
+    private function process($footprint, $options) {
+        $toponyms = array();
+        $codes = "('PPL', 'PPLC', 'PPLA', 'PPLA2', 'PPLA3', 'PPLA4', 'STLMT')";
+
+        $prequery = 'WITH prequery AS (SELECT ' . $this->postgisGeomFromText($footprint) . ' AS corrected_geometry, ST_centroid(' . $this->postgisGeomFromText($footprint) . ') AS corrected_centroid)';
+        $query = $prequery . ' SELECT normalize(name) as id, name, longitude, latitude, fcode, population, ST_Distance(geom, corrected_centroid) as distance FROM prequery, gazetteer.geoname WHERE st_intersects(geom, corrected_geometry) AND fcode IN ' . $codes . ' ORDER BY distance ASC';
+        $results = $this->query($query);
+        while ($result = pg_fetch_assoc($results)) {
+            $toponyms[] = array(
+                'name' => $result['name'],
+                'geo:lon' => (integer) $result['longitude'],
+                'geo:lat' => (integer) $result['latitude'],
+                'fcode' => $result['fcode'],
+                'population' => (integer) $result['population'],
+                'distanceToCentroid' => (float) $result['distance']
+            );
+        }
+
+        return array(
+            'toponyms' => $toponyms
+        );
+
+    }
+
+}

include/iTag/iTag.php

@@ -20,14 +20,15 @@
 require 'Taggers/Tagger_Hydrology.php';
 require 'Taggers/Tagger_LandCover.php';
 require 'Taggers/Tagger_Political.php';
+require 'Taggers/Tagger_Toponyms.php';
 require 'Taggers/Tagger_Population.php';
 require 'Taggers/Tagger_Physical.php';
 class iTag {
 
     /*
      * iTag version
      */
-    const version = '3.0.11';
+    const version = '3.0.12';
 
     /*
      * Database handler