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gadm.php
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gadm.php
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<?php
require_once 'config.php';
function validate_request(){
if ( !isset($_GET['level']) )
{
header('HTTP/1.1 500 Internal Server Error');
header('Content-type: text/html');
die("'level' parameter required.");
}
if ( !isset($_GET['id']) )
{
header('HTTP/1.1 500 Internal Server Error');
header('Content-type: text/html');
die("'id' parameter required.");
}
if (!is_numeric($_GET['level']) || !is_numeric($_GET['id'])){
header("HTTP/1.0 404 Not Found");
header('Content-type: text/html');
die();
}
$params = array();
$params['gadm_level'] = $_GET['level'];
$params['gadm_id'] = $_GET['id'];
$params['content_type'] = stripslashes($_GET['content_type']);
$params['feature'] = isset($_GET['feature']) && (boolean) stripslashes($_GET['feature']);
$params['geometry'] = isset($_GET['geometry']) && (boolean) stripslashes($_GET['geometry']);
if (isset($_GET['geometry'])) {
$params['resolution'] = stripslashes($_GET['resolution']);
} else {
$params['resolution'] = 0;
}
$params['simplify'] = isset($_GET['simplify']) && (boolean) stripslashes($_GET['simplify']);
return $params;
}
function validate_request_level(){
if ( !isset($_GET['level']) )
{
header('HTTP/1.1 500 Internal Server Error');
header('Content-type: text/html');
die("'level' parameter required.");
}
if (!is_numeric($_GET['level'])){
header("HTTP/1.0 404 Not Found");
header('Content-type: text/html');
die();
}
$params = array();
$params['gadm_level'] = $_GET['level'];
$params['content_type'] = stripslashes($_GET['content_type']);
if (isset($_GET['geometry'])) {
$params['resolution'] = stripslashes($_GET['resolution']);
} else {
$params['resolution'] = 0;
}
if (isset($_GET['limit'])) {
$params['limit'] = explode(',', stripslashes($_GET['limit']));
if (!(count($params['limit'])==2 && is_numeric($params['limit'][0]) && is_numeric($params['limit'][1]))) {
$params['limit'] = null;
}
} else {
$params['limit'] = null;
}
$params['feature'] = isset($_GET['feature']) && (boolean) stripslashes($_GET['feature']);
$params['geometry'] = isset($_GET['geometry']) && (boolean) stripslashes($_GET['geometry']);
$params['simplify'] = isset($_GET['simplify']) && (boolean) stripslashes($_GET['simplify']);
return $params;
}
function get_geometry($content_type, $simplify = false, $aggregate = false, $resolution = 0){
if ($simplify || $resolution){
if ($resolution != 0){
// Retrieve a scaled down version of the geometry by snapping the points to a grid. Consecutive points within the same slot will be ignored.
$source_geom = "ST_SnapToGrid(ST_SimplifyPreserveTopology(g.geometry, ".($resolution/100)."), ".($resolution/10000).")";
}else{
// The Google Maps Widget does not load geometries that uncompress to more than 1MB. Also, if it takes too long to
// build the file, the geometry will not load because of a timeout. Here we set an arbitrary maximum of 20000 points
// for each geometry.
//$source_geom = "ST_SimplifyPreserveTopology(g.geometry,(ST_Perimeter(g.geometry)/20000))";
$source_geom = "g.simplified_geometry";
}
}else{
$source_geom = "g.geometry";
}
if ($aggregate){
$source_geom = "ST_Multi(ST_Collect(".$source_geom."))";
}
switch ($content_type){
case 'kml':
$geometry = "asKML(".$source_geom.",6) as geometry";
break;
case 'kmz':
$geometry = "asKML(".$source_geom.",6) as geometry";
break;
case 'gml':
$geometry = "asGML(".$source_geom.",6) as geometry";
break;
case 'svg':
$geometry = "ST_asSVG(".$source_geom.",0,6) as geometry, ST_Box2D(".$source_geom.") as bbox";
break;
case 'geojson':
$geometry = "ST_AsGeoJSON(".$source_geom.",6) as geometry";
break;
default:
$geometry = "ST_AsText(".$source_geom.") as geometry";
}
return $geometry;
}
function prepare_feature($data, $sameas_uris = array(), $eq_uris = array(), $ppi_uris = array()){
$rdf_ns = "http://www.w3.org/1999/02/22-rdf-syntax-ns#";
$rdfs_ns = "http://www.w3.org/2000/01/rdf-schema#";
$spatial_ns = "http://geovocab.org/spatial#";
$ngeo_ns = "http://geovocab.org/geometry";
$gadm_ns = BASE_URL."/ontology#";
$gadm_inst_ns = BASE_URL."/id/";
$gadm_igov_ns = BASE_URL."/igov#";
$owl_ns = "http://www.w3.org/2002/07/owl#";
$feature = array();
$feature_id = $data['gadm_level'].'/'.$data['gadm_id'];
$feature_uri = $gadm_inst_ns.$feature_id;
$feature_classes = array(
"landlocked" => array('subject' => $feature_uri, 'predicate_uri' => $rdf_ns."type", 'predicate' => "rdf:type", 'object' => $gadm_ns.'LandlockedCountry', 'datatype' => "anyURI"),
"islands" => array('subject' => $feature_uri, 'predicate_uri' => $rdf_ns."type", 'predicate' => "rdf:type", 'object' => $gadm_ns.'IslandCountry', 'datatype' => "anyURI"),
"ldc" => array('subject' => $feature_uri, 'predicate_uri' => $rdf_ns."type", 'predicate' => "rdf:type", 'object' => $gadm_ns.'LeastDevelopedCountry', 'datatype' => "anyURI"),
"transition" => array('subject' => $feature_uri, 'predicate_uri' => $rdf_ns."type", 'predicate' => "rdf:type", 'object' => $gadm_ns.'TransitionEconomy', 'datatype' => "anyURI")
);
$feature_groups = array(
"cis" => array('subject' => $feature_uri, 'predicate_uri' => $gadm_ns."member_of", 'predicate' => "gadm:member_of", 'object' => $gadm_igov_ns.'CIS', 'datatype' => "anyURI"),
"oecd" => array('subject' => $feature_uri, 'predicate_uri' => $gadm_ns."member_of", 'predicate' => "gadm:member_of", 'object' => $gadm_igov_ns.'OECD', 'datatype' => "anyURI"),
"ceeac" => array('subject' => $feature_uri, 'predicate_uri' => $gadm_ns."member_of", 'predicate' => "gadm:member_of", 'object' => $gadm_igov_ns.'CEEAC', 'datatype' => "anyURI"),
"cemac" => array('subject' => $feature_uri, 'predicate_uri' => $gadm_ns."member_of", 'predicate' => "gadm:member_of", 'object' => $gadm_igov_ns.'CEMAC', 'datatype' => "anyURI"),
"ceplg" => array('subject' => $feature_uri, 'predicate_uri' => $gadm_ns."member_of", 'predicate' => "gadm:member_of", 'object' => $gadm_igov_ns.'CEPLG', 'datatype' => "anyURI"),
"comesa" => array('subject' => $feature_uri, 'predicate_uri' => $gadm_ns."member_of", 'predicate' => "gadm:member_of", 'object' => $gadm_igov_ns.'COMESA', 'datatype' => "anyURI"),
"eac" => array('subject' => $feature_uri, 'predicate_uri' => $gadm_ns."member_of", 'predicate' => "gadm:member_of", 'object' => $gadm_igov_ns.'EAC', 'datatype' => "anyURI"),
"ecowas" => array('subject' => $feature_uri, 'predicate_uri' => $gadm_ns."member_of", 'predicate' => "gadm:member_of", 'object' => $gadm_igov_ns.'ECOWAS', 'datatype' => "anyURI"),
"igad" => array('subject' => $feature_uri, 'predicate_uri' => $gadm_ns."member_of", 'predicate' => "gadm:member_of", 'object' => $gadm_igov_ns.'IGAD', 'datatype' => "anyURI"),
"ioc" => array('subject' => $feature_uri, 'predicate_uri' => $gadm_ns."member_of", 'predicate' => "gadm:member_of", 'object' => $gadm_igov_ns.'IOC', 'datatype' => "anyURI"),
"mru" => array('subject' => $feature_uri, 'predicate_uri' => $gadm_ns."member_of", 'predicate' => "gadm:member_of", 'object' => $gadm_igov_ns.'MRU', 'datatype' => "anyURI"),
"sacu" => array('subject' => $feature_uri, 'predicate_uri' => $gadm_ns."member_of", 'predicate' => "gadm:member_of", 'object' => $gadm_igov_ns.'SACU', 'datatype' => "anyURI"),
"uemoa" => array('subject' => $feature_uri, 'predicate_uri' => $gadm_ns."member_of", 'predicate' => "gadm:member_of", 'object' => $gadm_igov_ns.'UEMOA', 'datatype' => "anyURI"),
"uma" => array('subject' => $feature_uri, 'predicate_uri' => $gadm_ns."member_of", 'predicate' => "gadm:member_of", 'object' => $gadm_igov_ns.'UMA', 'datatype' => "anyURI"),
"palop" => array('subject' => $feature_uri, 'predicate_uri' => $gadm_ns."member_of", 'predicate' => "gadm:member_of", 'object' => $gadm_igov_ns.'PALOP', 'datatype' => "anyURI"),
"parta" => array('subject' => $feature_uri, 'predicate_uri' => $gadm_ns."member_of", 'predicate' => "gadm:member_of", 'object' => $gadm_igov_ns.'PARTA', 'datatype' => "anyURI"),
"cacm" => array('subject' => $feature_uri, 'predicate_uri' => $gadm_ns."member_of", 'predicate' => "gadm:member_of", 'object' => $gadm_igov_ns.'CACM', 'datatype' => "anyURI"),
"eurasec" => array('subject' => $feature_uri, 'predicate_uri' => $gadm_ns."member_of", 'predicate' => "gadm:member_of", 'object' => $gadm_igov_ns.'EURASEC', 'datatype' => "anyURI"),
"agadir" => array('subject' => $feature_uri, 'predicate_uri' => $gadm_ns."member_of", 'predicate' => "gadm:member_of", 'object' => $gadm_igov_ns.'AgadirAgreement', 'datatype' => "anyURI"),
"saarc" => array('subject' => $feature_uri, 'predicate_uri' => $gadm_ns."member_of", 'predicate' => "gadm:member_of", 'object' => $gadm_igov_ns.'SAARC', 'datatype' => "anyURI"),
"asean" => array('subject' => $feature_uri, 'predicate_uri' => $gadm_ns."member_of", 'predicate' => "gadm:member_of", 'object' => $gadm_igov_ns.'ASEAN', 'datatype' => "anyURI"),
"nafta" => array('subject' => $feature_uri, 'predicate_uri' => $gadm_ns."member_of", 'predicate' => "gadm:member_of", 'object' => $gadm_igov_ns.'NAFTA', 'datatype' => "anyURI"),
"gcc" => array('subject' => $feature_uri, 'predicate_uri' => $gadm_ns."member_of", 'predicate' => "gadm:member_of", 'object' => $gadm_igov_ns.'GCC', 'datatype' => "anyURI"),
"csn" => array('subject' => $feature_uri, 'predicate_uri' => $gadm_ns."member_of", 'predicate' => "gadm:member_of", 'object' => $gadm_igov_ns.'CSN', 'datatype' => "anyURI"),
"caricom" => array('subject' => $feature_uri, 'predicate_uri' => $gadm_ns."member_of", 'predicate' => "gadm:member_of", 'object' => $gadm_igov_ns.'CARICOM', 'datatype' => "anyURI"),
"eu" => array('subject' => $feature_uri, 'predicate_uri' => $gadm_ns."member_of", 'predicate' => "gadm:member_of", 'object' => $gadm_igov_ns.'EU', 'datatype' => "anyURI"),
"can" => array('subject' => $feature_uri, 'predicate_uri' => $gadm_ns."member_of", 'predicate' => "gadm:member_of", 'object' => $gadm_igov_ns.'CAN', 'datatype' => "anyURI"),
"acp" => array('subject' => $feature_uri, 'predicate_uri' => $gadm_ns."member_of", 'predicate' => "gadm:member_of", 'object' => $gadm_igov_ns.'ACP', 'datatype' => "anyURI"),
"aosis" => array('subject' => $feature_uri, 'predicate_uri' => $gadm_ns."member_of", 'predicate' => "gadm:member_of", 'object' => $gadm_igov_ns.'AOSIS', 'datatype' => "anyURI"),
"sids" => array('subject' => $feature_uri, 'predicate_uri' => $gadm_ns."member_of", 'predicate' => "gadm:member_of", 'object' => $gadm_igov_ns.'SIDS', 'datatype' => "anyURI")
);
$feature_properties = array(
"gadm_id" => array('subject' => $feature_uri, 'predicate_uri' => $gadm_ns."gadm_id", 'predicate' => "gadm:gadm_id", 'datatype' => "decimal"),
"gadm_level" => array('subject' => $feature_uri, 'predicate_uri' => $gadm_ns."gadm_level", 'predicate' => "gadm:gadm_level", 'datatype' => "decimal"),
"name" => array('subject' => $feature_uri, 'predicate_uri' => $rdfs_ns."label", 'predicate' => "rdfs:label", 'datatype' => "XMLLiteral"),
"name_english" => array('subject' => $feature_uri, 'predicate_uri' => $rdfs_ns."label", 'predicate' => "rdfs:label", 'datatype' => "XMLLiteral", 'lang' => "en"),
"name_spanish" => array('subject' => $feature_uri, 'predicate_uri' => $rdfs_ns."label", 'predicate' => "rdfs:label", 'datatype' => "XMLLiteral", 'lang' => "es"),
"name_french" => array('subject' => $feature_uri, 'predicate_uri' => $rdfs_ns."label", 'predicate' => "rdfs:label", 'datatype' => "XMLLiteral", 'lang' => "fr"),
"name_iso" => array('subject' => $feature_uri, 'predicate_uri' => $gadm_ns."name_iso", 'predicate' => "gadm:name_iso", 'datatype' => "XMLLiteral"),
"name_fao" => array('subject' => $feature_uri, 'predicate_uri' => $gadm_ns."name_fao", 'predicate' => "gadm:name_fao", 'datatype' => "XMLLiteral"),
"name_obsolete" => array('subject' => $feature_uri, 'predicate_uri' => $gadm_ns."name_obsolete", 'predicate' => "gadm:name_obsolete", 'datatype' => "XMLLiteral"),
"nl_name" => array('subject' => $feature_uri, 'predicate_uri' => $gadm_ns."nl_name", 'predicate' => "gadm:nl_name", 'datatype' => "XMLLiteral"),
"name_variations" => array('subject' => $feature_uri, 'predicate_uri' => $gadm_ns."name_variations", 'predicate' => "gadm:name_variations", 'datatype' => "XMLLiteral"),
"type" => array('subject' => $feature_uri, 'predicate_uri' => $gadm_ns."type", 'predicate' => "gadm:type", 'datatype' => "XMLLiteral"),
"type_english" => array('subject' => $feature_uri, 'predicate_uri' => $gadm_ns."type", 'predicate' => "gadm:type", 'datatype' => "XMLLiteral", 'lang' => "en"),
"iso" => array('subject' => $feature_uri, 'predicate_uri' => $gadm_ns."iso", 'predicate' => "gadm:iso", 'datatype' => "XMLLiteral"),
"iso2" => array('subject' => $feature_uri, 'predicate_uri' => $gadm_ns."iso2", 'predicate' => "gadm:iso2", 'datatype' => "XMLLiteral"),
"fips" => array('subject' => $feature_uri, 'predicate_uri' => $gadm_ns."fips", 'predicate' => "gadm:fips", 'datatype' => "XMLLiteral"),
"ison" => array('subject' => $feature_uri, 'predicate_uri' => $gadm_ns."ison", 'predicate' => "gadm:ison", 'datatype' => "decimal"),
"www" => array('subject' => $feature_uri, 'predicate_uri' => $gadm_ns."www", 'predicate' => "gadm:www", 'datatype' => "XMLLiteral"),
"waspartof" => array('subject' => $feature_uri, 'predicate_uri' => $gadm_ns."waspartof", 'predicate' => "gadm:waspartof", 'datatype' => "XMLLiteral"),
"contains" => array('subject' => $feature_uri, 'predicate_uri' => $gadm_ns."contains", 'predicate' => "gadm:contains", 'datatype' => "XMLLiteral"),
"sovereign" => array('subject' => $feature_uri, 'predicate_uri' => $gadm_ns."sovereign", 'predicate' => "gadm:sovereign", 'datatype' => "XMLLiteral"),
"valid_from" => array('subject' => $feature_uri, 'predicate_uri' => $gadm_ns."valid_from", 'predicate' => "gadm:valid_from", 'datatype' => "XMLLiteral"),
"valid_to" => array('subject' => $feature_uri, 'predicate_uri' => $gadm_ns."valid_to", 'predicate' => "gadm:valid_to", 'datatype' => "XMLLiteral"),
"andyid" => array('subject' => $feature_uri, 'predicate_uri' => $gadm_ns."andyid", 'predicate' => "gadm:andyid", 'datatype' => "XMLLiteral"),
"pop2000" => array('subject' => $feature_uri, 'predicate_uri' => $gadm_ns."pop2000", 'predicate' => "gadm:pop2000", 'datatype' => "decimal"),
"sqkm" => array('subject' => $feature_uri, 'predicate_uri' => $gadm_ns."sqkm", 'predicate' => "gadm:sqkm", 'datatype' => "decimal"),
"popsqkm" => array('subject' => $feature_uri, 'predicate_uri' => $gadm_ns."popsqkm", 'predicate' => "gadm:popsqkm", 'datatype' => "decimal"),
"unregion1" => array('subject' => $feature_uri, 'predicate_uri' => $gadm_ns."unregion1", 'predicate' => "gadm:unregion1", 'datatype' => "XMLLiteral"),
"unregion2" => array('subject' => $feature_uri, 'predicate_uri' => $gadm_ns."unregion2", 'predicate' => "gadm:unregion2", 'datatype' => "XMLLiteral"),
"wbregion" => array('subject' => $feature_uri, 'predicate_uri' => $gadm_ns."wbregion", 'predicate' => "gadm:wbregion", 'datatype' => "XMLLiteral"),
"wbincome" => array('subject' => $feature_uri, 'predicate_uri' => $gadm_ns."wbincome", 'predicate' => "gadm:wbincome", 'datatype' => "XMLLiteral"),
"wbdebt" => array('subject' => $feature_uri, 'predicate_uri' => $gadm_ns."wbdebt", 'predicate' => "gadm:wbdebt", 'datatype' => "XMLLiteral"),
"wbother" => array('subject' => $feature_uri, 'predicate_uri' => $gadm_ns."wbother", 'predicate' => "gadm:wbother", 'datatype' => "XMLLiteral"),
"developing" => array('subject' => $feature_uri, 'predicate_uri' => $gadm_ns."developing", 'predicate' => "gadm:developing", 'datatype' => "decimal"),
"has_code" => array('subject' => $feature_uri, 'predicate_uri' => $gadm_ns."has_code", 'predicate' => "gadm:has_code", 'datatype' => "XMLLiteral"),
"cc" => array('subject' => $feature_uri, 'predicate_uri' => $gadm_ns."cc", 'predicate' => "gadm:cc", 'datatype' => "XMLLiteral"),
"name_0" => array('subject' => $feature_uri, 'predicate_uri' => $gadm_ns."in_country", 'predicate' => "gadm:in_country", 'datatype' => "XMLLiteral"),
"name_1" => array('subject' => $feature_uri, 'predicate_uri' => $gadm_ns."in_region", 'predicate' => "gadm:in_region", 'datatype' => "XMLLiteral"),
"name_2" => array('subject' => $feature_uri, 'predicate_uri' => $gadm_ns."in_region", 'predicate' => "gadm:in_region", 'datatype' => "XMLLiteral"),
"name_3" => array('subject' => $feature_uri, 'predicate_uri' => $gadm_ns."in_region", 'predicate' => "gadm:in_region", 'datatype' => "XMLLiteral"),
"remarks" => array('subject' => $feature_uri, 'predicate_uri' => $gadm_ns."remarks", 'predicate' => "gadm:remarks", 'datatype' => "XMLLiteral")
);
$containment_properties = array(
"id_0" => array('subject' => $feature_uri, 'predicate_uri' => $spatial_ns."PP", 'predicate' => "spatial:PP", 'object' => $gadm_inst_ns.'0/', 'datatype' => "anyURI"),
"id_1" => array('subject' => $feature_uri, 'predicate_uri' => $spatial_ns."PP", 'predicate' => "spatial:PP", 'object' => $gadm_inst_ns.'1/', 'datatype' => "anyURI"),
"id_2" => array('subject' => $feature_uri, 'predicate_uri' => $spatial_ns."PP", 'predicate' => "spatial:PP", 'object' => $gadm_inst_ns.'2/', 'datatype' => "anyURI"),
"id_3" => array('subject' => $feature_uri, 'predicate_uri' => $spatial_ns."PP", 'predicate' => "spatial:PP", 'object' => $gadm_inst_ns.'3/', 'datatype' => "anyURI")
);
// URI that defines the resource
//$feature[] = array('predicate_uri' => $rdf_ns."isDefinedBy", 'predicate' => "rdfs:isDefinedBy", 'object' => $feature_uri, 'datatype' => "anyURI");
$geometry_id = $feature_id.'/geometry';
$geometry_uri = $gadm_inst_ns.$geometry_id;
// Assign Feature Classes
// TODO: Select classes from rdf_type table
$feature[] = array('subject' => $feature_uri, 'predicate_uri' => $rdf_ns."type", 'predicate' => "rdf:type", 'object' => $spatial_ns."Feature", 'datatype' => "anyURI");
$feature[] = array('subject' => $feature_uri, 'predicate_uri' => $rdf_ns."type", 'predicate' => "rdf:type", 'object' => $gadm_ns."AdministrativeRegion", 'datatype' => "anyURI");
if ($data['gadm_level'] == 0){
$feature[] = array('subject' => $feature_uri, 'predicate_uri' => $rdf_ns."type", 'predicate' => "rdf:type", 'object' => $gadm_ns."Country", 'datatype' => "anyURI");
foreach ($feature_classes as $field => $triple){
if ($data[$field] && $data[$field] != "f"){
$feature[] = $triple;
}
}
}elseif ($data['gadm_level'] == 1){
$feature[] = array('subject' => $feature_uri, 'predicate_uri' => $rdf_ns."type", 'predicate' => "rdf:type", 'object' => $gadm_ns."Level1", 'datatype' => "anyURI");
}elseif ($data['gadm_level'] == 2){
$feature[] = array('subject' => $feature_uri, 'predicate_uri' => $rdf_ns."type", 'predicate' => "rdf:type", 'object' => $gadm_ns."Level2", 'datatype' => "anyURI");
}elseif ($data['gadm_level'] == 3){
$feature[] = array('subject' => $feature_uri, 'predicate_uri' => $rdf_ns."type", 'predicate' => "rdf:type", 'object' => $gadm_ns."Level3", 'datatype' => "anyURI");
}elseif ($data['gadm_level'] == 4){
$feature[] = array('subject' => $feature_uri, 'predicate_uri' => $rdf_ns."type", 'predicate' => "rdf:type", 'object' => $gadm_ns."Level4", 'datatype' => "anyURI");
}
// Assign the groups the Feature belongs to
foreach ($feature_groups as $field => $triple){
if ($data[$field] && $data[$field] != "f"){
$feature[] = $triple;
}
}
// Assign the regions the Feature belongs to
foreach ($containment_properties as $field => $triple){
if ($data[$field] && $data[$field] != ""){
$triple['object'] .= $data[$field];
$feature[] = $triple;
}
}
//check whether there are sub regions
if (has_sub($data['gadm_level'], $data['gadm_id'])) {
$feature[] = array('subject' => $feature_uri, 'predicate_uri' => $spatial_ns."PPi", 'predicate' => "spatial:PPi", 'object' => $feature_uri.'/sub', 'datatype' => "anyURI");
}
// Assign the Geometry to the Feature
$feature[] = array('subject' => $feature_uri, 'predicate_uri' => $ngeo_ns."geometry", 'predicate' => "ngeo:geometry", 'object' => $geometry_uri, 'datatype' => "anyURI");
$feature[] = array('subject' => $feature_uri, 'predicate_uri' => $ngeo_ns."geometry", 'predicate' => "ngeo:geometry", 'object' => $geometry_uri."_100m", 'datatype' => "anyURI");
$feature[] = array('subject' => $feature_uri, 'predicate_uri' => $ngeo_ns."geometry", 'predicate' => "ngeo:geometry", 'object' => $geometry_uri."_1km", 'datatype' => "anyURI");
$feature[] = array('subject' => $feature_uri, 'predicate_uri' => $ngeo_ns."geometry", 'predicate' => "ngeo:geometry", 'object' => $geometry_uri."_10km", 'datatype' => "anyURI");
$feature[] = array('subject' => $feature_uri, 'predicate_uri' => $ngeo_ns."geometry", 'predicate' => "ngeo:geometry", 'object' => $geometry_uri."_100km", 'datatype' => "anyURI");
// Asign the Feature's value properties
foreach ($feature_properties as $field => $triple){
if ($data[$field] && $data[$field] != ""){
$multiple_values = explode("|", $data[$field]);
foreach ($multiple_values as $value){
$triple['object'] = $value;
$feature[] = $triple;
}
}
}
// Assign the equivalent Features
foreach ($sameas_uris as $uri){
if ($uri != ""){
$feature[] = array('subject' => $feature_uri, 'predicate_uri' => $owl_ns."sameAs", 'predicate' => "owl:sameAs", 'object' => $uri, 'datatype' => "anyURI");
}
}
// Assign the spatially co-located Features
foreach ($eq_uris as $uri){
if ($uri != ""){
$feature[] = array('subject' => $feature_uri, 'predicate_uri' => $spatial_ns."EQ", 'predicate' => "spatial:EQ", 'object' => $uri, 'datatype' => "anyURI");
}
}
// Assign the properly contained Features
foreach ($ppi_uris as $uri){
if ($uri != ""){
$feature[] = array('subject' => $feature_uri, 'predicate_uri' => $spatial_ns."PPi", 'predicate' => "spatial:PPi", 'object' => $uri, 'datatype' => "anyURI");
}
}
$description = array();
$description['properties'] = $feature;
$description['id'] = $feature_id;
$description['simplified_geometry_uri'] = $feature_uri."/simplified_geometry";
$description['uri'] = $feature_uri;
$multiple_names = explode("|", $data['name']);
$description['name'] = $multiple_names[0];
$description['formats'] = array('ttl' => "Turtle", 'rdf' => "RDF/XML");
return $description;
}
function has_sub($level, $id) {
if ($level < 4) {
$sql = "SELECT g.gadm_level FROM gadm_regions g WHERE g.id_".$level." = ".$id." AND g.gadm_level = ".($level+1)." LIMIT 1";
$result = make_query($sql);
if (pg_num_rows($result) == 1) {
return true;
} else {
return false;
}
}
}
function prepare_geometry($data, $resolution = 0){
$rdf_ns = "http://www.w3.org/1999/02/22-rdf-syntax-ns#";
$ngeo_ns = "http://geovocab.org/geometry#";
$gadm_ns = BASE_URL."/ontology#";
$gadm_inst_ns = BASE_URL."/id/";
$gadm_igov_ns = BASE_URL."/igov#";
$ogc_ns = "http://www.opengis.net/rdf#";
$dct_ns = "http://purl.org/dc/terms/";
$dctype_ns = "http://purl.org/dc/dcmitype/";
$foaf_ns = "http://xmlns.com/foaf/0.1/";
$geometry_properties = array(
// "geometry" => array('predicate_uri' => $ogc_ns."asWKT", 'predicate' => "ogc:asWKT", 'datatype' => $ogc_ns."WKTLiteral")
);
$feature_id = $data['gadm_level'].'/'.$data['gadm_id'];
$feature_uri = $gadm_inst_ns.$feature_id;
$geometry = array();
$description = array();
switch($resolution){
case 0.1:
$geometry_id = $feature_id.'/geometry_100m';
break;
case 1:
$geometry_id = $feature_id.'/geometry_1km';
break;
case 10:
$geometry_id = $feature_id.'/geometry_10km';
break;
case 100:
$geometry_id = $feature_id.'/geometry_100km';
break;
default:
$geometry_id = $feature_id.'/geometry';
break;
}
$geometry_uri = $gadm_inst_ns.$geometry_id;
if ($geometry_id == $feature_id.'/geometry'){
$description['simplified_geometry_uri'] = $feature_uri."/simplified_geometry";
}else{
$description['simplified_geometry_uri'] = $gadm_inst_ns.$geometry_id;
$geometry[] = array('subject' => $geometry_uri, 'predicate_uri' => $ngeo_ns."resolution", 'predicate' => "ngeo:resolution", 'object' => $resolution*1000, 'datatype' => "decimal");
}
// Assign the Geometry's properties
$geometry[] = array('subject' => $geometry_uri, 'predicate_uri' => $rdf_ns."type", 'predicate' => "rdf:type", 'object' => $ngeo_ns."Geometry", 'datatype' => "anyURI");
//$geometry[] = array('predicate_uri' => $rdf_ns."isDefinedBy", 'predicate' => "rdfs:isDefinedBy", 'object' => $geometry_uri, 'datatype' => "anyURI");
$geometry[] = array('subject' => $geometry_uri, 'predicate_uri' => $ngeo_ns."geometryOf", 'predicate' => "ngeo:geometryOf", 'object' => $feature_uri, 'datatype' => "anyURI");
// $geometry[] = array('predicate_uri' => $rdf_ns."type", 'predicate' => "rdf:type", 'object' => $ogc_ns."Geometry", 'datatype' => "anyURI");
foreach ($geometry_properties as $field => $triple){
if ($data[$field] && $data[$field] != ""){
$triple['object'] = $data[$field];
$geometry[] = $triple;
}
}
// RDF
$bnode = array();
$bnode[] = array('subject' => $geometry_uri.".rdf", 'predicate_uri' => $rdf_ns."type", 'predicate' => "rdf:type", 'object' => $dctype_ns."Image", 'datatype' => "anyURI");
$bnode[] = array('subject' => "_".$geometry_id."_rdf", 'bnode' => true, 'predicate_uri' => $dct_ns."isFormatOf", 'predicate' => "dct:isFormatOf", 'object' => $geometry_uri, 'datatype' => "anyURI");
$bnode[] = array('subject' => "_".$geometry_id."_rdf", 'bnode' => true, 'predicate_uri' => $dct_ns."format", 'predicate' => "dct:format", 'object' => "application/rdf+xml", 'datatype' => "XMLLiteral");
$bnode[] = array('subject' => "_".$geometry_id."_rdf", 'bnode' => true, 'predicate_uri' => $foaf_ns."primaryTopic", 'predicate' => "foaf:primaryTopic", 'object' => $feature_uri, 'datatype' => "anyURI");
$geometry[] = array('subject' => $geometry_uri, 'predicate_uri' => $dct_ns."hasFormat", 'predicate' => "dct:hasFormat", 'object' => $bnode, 'datatype' => "bnode");
// HTML
$bnode = array();
$bnode[] = array('subject' => $geometry_uri.".html", 'predicate_uri' => $rdf_ns."type", 'predicate' => "rdf:type", 'object' => $dctype_ns."Image", 'datatype' => "anyURI");
$bnode[] = array('subject' => "_".$geometry_id."_html", 'bnode' => true, 'predicate_uri' => $dct_ns."isFormatOf", 'predicate' => "dct:isFormatOf", 'object' => $geometry_uri, 'datatype' => "anyURI");
$bnode[] = array('subject' => "_".$geometry_id."_html", 'bnode' => true, 'predicate_uri' => $dct_ns."format", 'predicate' => "dct:format", 'object' => "text/html", 'datatype' => "XMLLiteral");
$bnode[] = array('subject' => "_".$geometry_id."_html", 'bnode' => true, 'predicate_uri' => $foaf_ns."primaryTopic", 'predicate' => "foaf:primaryTopic", 'object' => $feature_uri, 'datatype' => "anyURI");
$geometry[] = array('subject' => $geometry_uri, 'predicate_uri' => $dct_ns."hasFormat", 'predicate' => "dct:hasFormat", 'object' => $bnode, 'datatype' => "bnode");
// Turtle
$bnode = array();
$bnode[] = array('subject' => $geometry_uri.".ttl", 'predicate_uri' => $rdf_ns."type", 'predicate' => "rdf:type", 'object' => $dctype_ns."Image", 'datatype' => "anyURI");
$bnode[] = array('subject' => "_".$geometry_id."_ttl", 'bnode' => true, 'predicate_uri' => $dct_ns."isFormatOf", 'predicate' => "dct:isFormatOf", 'object' => $geometry_uri, 'datatype' => "anyURI");
$bnode[] = array('subject' => "_".$geometry_id."_ttl", 'bnode' => true, 'predicate_uri' => $dct_ns."format", 'predicate' => "dct:format", 'object' => "text/turtle", 'datatype' => "XMLLiteral");
$bnode[] = array('subject' => "_".$geometry_id."_ttl", 'bnode' => true, 'predicate_uri' => $foaf_ns."primaryTopic", 'predicate' => "foaf:primaryTopic", 'object' => $feature_uri, 'datatype' => "anyURI");
$geometry[] = array('subject' => $geometry_uri, 'predicate_uri' => $dct_ns."hasFormat", 'predicate' => "dct:hasFormat", 'object' => $bnode, 'datatype' => "bnode");
// GeoJson
$bnode = array();
$bnode[] = array('subject' => $geometry_uri.".json", 'predicate_uri' => $rdf_ns."type", 'predicate' => "rdf:type", 'object' => $dctype_ns."Image", 'datatype' => "anyURI");
$bnode[] = array('subject' => "_".$geometry_id."_json", 'bnode' => true, 'predicate_uri' => $dct_ns."isFormatOf", 'predicate' => "dct:isFormatOf", 'object' => $geometry_uri, 'datatype' => "anyURI");
$bnode[] = array('subject' => "_".$geometry_id."_json", 'bnode' => true, 'predicate_uri' => $dct_ns."format", 'predicate' => "dct:format", 'object' => "application/json", 'datatype' => "XMLLiteral");
$bnode[] = array('subject' => "_".$geometry_id."_json", 'bnode' => true, 'predicate_uri' => $foaf_ns."primaryTopic", 'predicate' => "foaf:primaryTopic", 'object' => $feature_uri, 'datatype' => "anyURI");
$geometry[] = array('subject' => $geometry_uri, 'predicate_uri' => $dct_ns."hasFormat", 'predicate' => "dct:hasFormat", 'object' => $bnode, 'datatype' => "bnode");
// GML
$bnode = array();
$bnode[] = array('subject' => $geometry_uri.".gml", 'predicate_uri' => $rdf_ns."type", 'predicate' => "rdf:type", 'object' => $dctype_ns."Image", 'datatype' => "anyURI");
$bnode[] = array('subject' => "_".$geometry_id."_gml", 'bnode' => true, 'predicate_uri' => $dct_ns."isFormatOf", 'predicate' => "dct:isFormatOf", 'object' => $geometry_uri, 'datatype' => "anyURI");
$bnode[] = array('subject' => "_".$geometry_id."_gml", 'bnode' => true, 'predicate_uri' => $dct_ns."format", 'predicate' => "dct:format", 'object' => "application/vnd.ogc.gml", 'datatype' => "XMLLiteral");
$bnode[] = array('subject' => "_".$geometry_id."_gml", 'bnode' => true, 'predicate_uri' => $foaf_ns."primaryTopic", 'predicate' => "foaf:primaryTopic", 'object' => $feature_uri, 'datatype' => "anyURI");
$geometry[] = array('subject' => $geometry_uri, 'predicate_uri' => $dct_ns."hasFormat", 'predicate' => "dct:hasFormat", 'object' => $bnode, 'datatype' => "bnode");
// KML
$bnode = array();
$bnode[] = array('subject' => $geometry_uri.".kml", 'predicate_uri' => $rdf_ns."type", 'predicate' => "rdf:type", 'object' => $dctype_ns."Image", 'datatype' => "anyURI");
$bnode[] = array('subject' => "_".$geometry_id."_kml", 'bnode' => true, 'predicate_uri' => $dct_ns."isFormatOf", 'predicate' => "dct:isFormatOf", 'object' => $geometry_uri, 'datatype' => "anyURI");
$bnode[] = array('subject' => "_".$geometry_id."_kml", 'bnode' => true, 'predicate_uri' => $dct_ns."format", 'predicate' => "dct:format", 'object' => "application/vnd.google-earth.kml+xml", 'datatype' => "XMLLiteral");
$bnode[] = array('subject' => "_".$geometry_id."_kml", 'bnode' => true, 'predicate_uri' => $foaf_ns."primaryTopic", 'predicate' => "foaf:primaryTopic", 'object' => $feature_uri, 'datatype' => "anyURI");
$geometry[] = array('subject' => $geometry_uri, 'predicate_uri' => $dct_ns."hasFormat", 'predicate' => "dct:hasFormat", 'object' => $bnode, 'datatype' => "bnode");
// SVG
$bnode = array();
$bnode[] = array('subject' => $geometry_uri.".svg", 'predicate_uri' => $rdf_ns."type", 'predicate' => "rdf:type", 'object' => $dctype_ns."Image", 'datatype' => "anyURI");
$bnode[] = array('subject' => "_".$geometry_id."_svg", 'bnode' => true, 'predicate_uri' => $dct_ns."isFormatOf", 'predicate' => "dct:isFormatOf", 'object' => $geometry_uri, 'datatype' => "anyURI");
$bnode[] = array('subject' => "_".$geometry_id."_svg", 'bnode' => true, 'predicate_uri' => $dct_ns."format", 'predicate' => "dct:format", 'object' => "image/svg+xml", 'datatype' => "XMLLiteral");
$bnode[] = array('subject' => "_".$geometry_id."_svg", 'bnode' => true, 'predicate_uri' => $foaf_ns."primaryTopic", 'predicate' => "foaf:primaryTopic", 'object' => $feature_uri, 'datatype' => "anyURI");
$geometry[] = array('subject' => $geometry_uri, 'predicate_uri' => $dct_ns."hasFormat", 'predicate' => "dct:hasFormat", 'object' => $bnode, 'datatype' => "bnode");
$description['properties'] = $geometry;
$description['id'] = $geometry_id;
$description['uri'] = $geometry_uri;
$description['name'] = $data['name']." (geometry)";
$description['formats'] = array('ttl' => "Turtle", 'rdf' => "RDF/XML", 'gml' => "GML", 'kml' => "KML", 'kmz' => "KMZ", 'geojson' => "GeoJSON", 'svg' => "SVG");
return $description;
}
function show_region($result, $content_type, $show_feature = false, $show_geometry = false, $resolution = 0){
$pg_array = pg_fetch_array($result, null, PGSQL_ASSOC);
$sameas_uris = array_unique(pg_fetch_all_columns($result, pg_field_num($result, "sameas_uri")));
$eq_uris = array_unique(pg_fetch_all_columns($result, pg_field_num($result, "eq_uri")));
$ppi_uris = array_unique(pg_fetch_all_columns($result, pg_field_num($result, "ppi_uri")));
$data = array();
switch ($content_type) {
case 'rdf':
if ($show_feature) $data['feature'] = prepare_feature($pg_array, $sameas_uris, $eq_uris, $ppi_uris);
if ($show_geometry) $data['geometry'] = prepare_geometry($pg_array, $resolution);
break;
case 'html':
if ($show_feature) $data = prepare_feature($pg_array, $sameas_uris, $eq_uris, $ppi_uris);
elseif ($show_geometry) $data = prepare_geometry($pg_array, $resolution);
break;
case 'ttl':
if ($show_feature) $data['feature'] = prepare_feature($pg_array, $sameas_uris, $eq_uris, $ppi_uris);
if ($show_geometry) $data['geometry'] = prepare_geometry($pg_array, $resolution);
break;
case 'gml':
$data = $pg_array;
break;
case 'svg':
$data = $pg_array;
break;
case 'kml':
$data = prepare_feature($pg_array, $rdf_type, $rdfs_label, $owl_sameas, $spatial_pp);
$data['geometry'] = $pg_array['geometry'];
break;
case 'kmz':
$data = prepare_feature($pg_array, $rdf_type, $rdfs_label, $owl_sameas, $spatial_pp);
$data['geometry'] = $pg_array['geometry'];
$data['filename'] = $data['gadm_level']."_".$data['gadm_id']."_geometry.kml";
break;
case 'geojson':
$data = $pg_array;
break;
}
show_template($data, $content_type);
}
function show_sub($element, $subs, $content_type, $show_geometry = true){
$rdf_ns = "http://www.w3.org/1999/02/22-rdf-syntax-ns#";
$rdfs_ns = "http://www.w3.org/2000/01/rdf-schema#";
$gadm_inst_ns = BASE_URL."/id/";
$feature = $element;
$feature_uri = $gadm_inst_ns.$feature['gadm_level'].'/'.$feature['gadm_id'].'/sub';
$spatial_ns = "http://geovocab.org/spatial#";
$feature['name'] = $feature['name']." (sub)";
$feature['uri'] = $feature_uri;
$feature['properties'] = array();
$feature['formats'] = array('ttl' => "Turtle", 'rdf' => "RDF/XML", 'kml' => "KML");
$feature['simplified_geometry_uri'] = $feature_uri;
if ($show_geometry)
{
while ( $row = pg_fetch_array($subs) )
{
$feature['properties'][] =array('name' => $row['name'], 'subject' => $feature_uri,'predicate_uri' => $spatial_ns."PP", 'predicate' => "spatial:PPi", 'uri' => $gadm_inst_ns.$row['gadm_level'].'/'.$row['gadm_id'], 'object' => $gadm_inst_ns.$row['gadm_level'].'/'.$row['gadm_id'], 'datatype' => "anyURI", 'geometry' => $row['geometry']);
}
} else {
while ( $row = pg_fetch_array($subs) )
{
$resource = array();
$uri = $gadm_inst_ns.$row['gadm_level'].'/'.$row['gadm_id'];
$resource['uri'] = $uri;
$resource['datatype'] = 'bnode';
$resource['predicate'] = 'spatial:PPi';
$resource['predicate_uri'] = $spatial_ns."PP";
$resource['subject'] = $feature['uri'];
$resource['object'][] = array('subject' => $feature['uri'], 'predicate_uri' => $rdfs_ns."label", 'predicate' => "rdfs:label", 'object' => $row['name'], 'datatype' => "XMLLiteral");
if ($row['name_iso'] != '')
{
$resource['object'][] = array('subject' => $uri, 'predicate_uri' => $gadm_ns."name_iso", 'predicate' => "gadm:name_iso", 'object' => $row['name_iso'], 'datatype' => "XMLLiteral");
}
if ($row['name_english'] != '')
{
$resource['object'][] = array('subject' => $uri, 'predicate_uri' => $rdfs_ns."label", 'predicate' => "rdfs:label", 'object' => $row['name_english'], 'datatype' => "XMLLiteral", 'lang' => "en");
}
$resource['object'][] = array('subject' => $feature_uri,'predicate_uri' => $rdfs_ns."isDefinedBy", 'predicate' => "rdfs:isDefinedBy", 'uri' => $gadm_inst_ns.$row['gadm_level'].'/'.$row['gadm_id'], 'object' => $gadm_inst_ns.$row['gadm_level'].'/'.$row['gadm_id'], 'datatype' => "anyURI");
$feature['properties'][] = $resource;
}
}
switch ($content_type) {
case 'rdf':
$data['feature'] = $feature;
//if ($show_geometry) $data['geometry'] = prepare_geometry($pg_array, $resolution);
break;
case 'html':
$data = $feature;
//elseif ($show_geometry) $data = prepare_geometry($pg_array, $resolution);
break;
case 'ttl':
$data['feature'] = $feature;
//if ($show_geometry) $data['geometry'] = prepare_geometry($pg_array, $resolution);
break;
case 'kml':
$data = $feature;
break;
}
show_template($data, $content_type);
}
function show_level($basic, $result, $content_type, $show_geometry = true, $limit = null, $has_next_page = false){
$rdf_ns = "http://www.w3.org/1999/02/22-rdf-syntax-ns#";
$rdfs_ns = "http://www.w3.org/2000/01/rdf-schema#";
$spatial_ns = "http://geovocab.org/spatial#";
$ngeo_ns = "http://geovocab.org/geometry";
$gadm_ns = BASE_URL."/ontology#";
$gadm_inst_ns = BASE_URL."/id/";
$gadm_igov_ns = BASE_URL."/igov#";
$owl_ns = "http://www.w3.org/2002/07/owl#";
$feature = array();
$feature_uri = $gadm_inst_ns.$basic['gadm_level'];
$feature['predicate'] = 'rdf:Bag';
$feature['name'] = "Level ".$basic['gadm_level'];
$feature['subject'] = $feature_uri;
$feature['uri'] = $feature_uri;
$feature['properties'] = array();
$feature['formats'] = array('ttl' => "Turtle", 'rdf' => "RDF/XML", 'kml' => "KML");
$feature['simplified_geometry_uri'] = $feature_uri;
if ($show_geometry) {
while ( $row = pg_fetch_array($result) ) {
$resource['properties'][] = array('subject' => $feature['uri'], 'predicate_uri' => $rdfs_ns."label", 'predicate' => "rdfs:label", 'object' => $row['name'], 'datatype' => "XMLLiteral");
if ($row['name_iso'] != '') {
$resource['properties'][] = array('subject' => $feature['uri'], 'predicate_uri' => $gadm_ns."name_iso", 'predicate' => "gadm:name_iso", 'object' => $row['name_iso'], 'datatype' => "XMLLiteral");
}
if ($row['name_english'] != '') {
$resource['properties'][] = array('subject' => $feature['uri'], 'predicate_uri' => $rdfs_ns."label", 'predicate' => "rdfs:label", 'object' => $row['name_english'], 'datatype' => "XMLLiteral", 'lang' => "en");
}
$feature['properties'][] = array('name' => $row['name'], 'subject' => $feature_uri,'predicate_uri' => $rdfs_ns."seeAlso", 'predicate' => "rdfs:seeAlso", 'uri' => $gadm_inst_ns.$row['gadm_level'].'/'.$row['gadm_id'], 'object' => $gadm_inst_ns.$row['gadm_level'].'/'.$row['gadm_id'], 'datatype' => "anyURI", 'geometry' => $row['geometry']);
}
} else {
while ( $row = pg_fetch_array($result) ) {
$resource = array();
$uri = $gadm_inst_ns.$row['gadm_level'].'/'.$row['gadm_id'];
$resource['uri'] = $uri;
$resource['datatype'] = 'bnode';
$resource['predicate'] = 'rdf:li';
$resource['subject'] = $feature['uri'];
$resource['object'][] = array('subject' => $feature['uri'], 'predicate_uri' => $rdfs_ns."label", 'predicate' => "rdfs:label", 'object' => $row['name'], 'datatype' => "XMLLiteral");
if ($row['name_iso'] != '') {
$resource['object'][] = array('subject' => $uri, 'predicate_uri' => $gadm_ns."name_iso", 'predicate' => "gadm:name_iso", 'object' => $row['name_iso'], 'datatype' => "XMLLiteral");
}
if ($row['name_english'] != '') {
$resource['object'][] = array('subject' => $uri, 'predicate_uri' => $rdfs_ns."label", 'predicate' => "rdfs:label", 'object' => $row['name_english'], 'datatype' => "XMLLiteral", 'lang' => "en");
}
$resource['object'][] = array('subject' => $feature_uri,'predicate_uri' => $rdfs_ns."isDefinedBy", 'predicate' => "rdfs:isDefinedBy", 'uri' => $gadm_inst_ns.$row['gadm_level'].'/'.$row['gadm_id'], 'object' => $gadm_inst_ns.$row['gadm_level'].'/'.$row['gadm_id'], 'datatype' => "anyURI");
$feature['properties'][] = $resource;
}
}
if ($limit != null && $has_next_page) {
$feature['properties'][] = nextPage($feature_uri, $limit);
}
switch ($content_type) {
case 'rdf':
$data['feature'] = $feature;
if ($show_geometry) $data['geometry'] = prepare_geometry($pg_array, $resolution);
break;
case 'html':
$data = $feature;
if ($show_geometry) $data = prepare_geometry($pg_array, $resolution);
break;
case 'ttl':
$data['feature'] = $feature;
if ($show_geometry) $data['geometry'] = prepare_geometry($pg_array, $resolution);
break;
case 'kml':
$data = $feature;
break;
}
show_template($data, $content_type, $show_geometry);
}
function show_template($data, $content_type, $show_geometry = true){
switch ($content_type) {
case 'rdf':
include(__DIR__.'/templates/rdf-xml.php');
break;
case 'html':
if ($show_geometry) {
include(__DIR__.'/templates/html.php');
} else {
include(__DIR__.'/templates/html_no_geo.php');
}
break;
case 'ttl':
include(__DIR__.'/templates/turtle.php');
break;
case 'gml':
include(__DIR__.'/templates/gml.php');
break;
case 'svg':
include(__DIR__.'/templates/svg.php');
break;
case 'kml':
include(__DIR__.'/templates/kml.php');
break;
case 'kmz':
include(__DIR__.'/templates/kmz.php');
break;
case 'geojson':
include(__DIR__.'/templates/geojson.php');
break;
default:
include(__DIR__.'/templates/rdf-xml.php');
}
}
function nextPage($uri, $old_limit) {
$resource = array();
$resource['uri'] = $uri;
$resource['subject'] = $uri;
$resource['datatype'] = 'anyURI';
$resource['predicate'] = 'rdf:seeAlso';
$resource['object'] = $uri.'?limit='.$old_limit[1].','.(2*$old_limit[1]-$old_limit[0]);
return $resource;
}
function make_query($sql){
// Connect to PostgreSQL
$db = pg_connect("host=".DB_SERVER." port=".DB_PORT." dbname=".DB_DATABASE." user=".DB_USERNAME." password=".DB_PASSWORD);
if (!$db)
{
header('HTTP/1.1 500 Internal Server Error');
header('Content-type: text/html');
die('Failed to connect to PostgreSQL. Error: ' . pg_last_error());
}
$result = pg_query($db, $sql);
if (!$result)
{
header('HTTP/1.1 500 Internal Server Error');
header('Content-type: text/html');
die('Failed to query PostgreSQL. Error: ' . pg_last_error());
}
// Close the connection
pg_close($db);
return $result;
}
function render($template, $param){
ob_start();
extract($param);
include("templates/".$template);
}
function asciiEncode($str){
return str_replace("\\/","/",json_encode(utf8_encode($str)));
}
/**
* @name : makeImageF
*
* Function for create image from text with selected font. Justify text in image (0-Left, 1-Right, 2-Center).
*
* @param String $text : String to convert into the Image.
* @param String $font : Font name of the text. Kip font file in same folder.
* @param int $Justify : Justify text in image (0-Left, 1-Right, 2-Center).
* @param int $Leading : Space between lines.
* @param int $W : Width of the Image.
* @param int $H : Hight of the Image.
* @param int $X : x-coordinate of the text into the image.
* @param int $Y : y-coordinate of the text into the image.
* @param int $fsize : Font size of text.
* @param array $color : RGB color array for text color.
* @param array $bgcolor : RGB color array for background.
*
*/
function imagettfJustifytext($text, $font="CENTURY.TTF", $Justify=2, $Leading=0, $W=0, $H=0, $X=0, $Y=0, $fsize=12, $color=array(0x0,0x0,0x0), $bgcolor=array(0xFF,0xFF,0xFF)){
$angle = 0;
$_bx = imageTTFBbox($fsize,0,$font,$text);
$s = split("[\n]+", $text); // Array of lines
$nL = count($s); // Number of lines
$W = ($W==0)?abs($_bx[2]-$_bx[0]):$W; // If Width not initialized by programmer then it will detect and assign perfect width.
$H = ($H==0)?abs($_bx[5]-$_bx[3])+($nL>1?($nL*$Leading):0):$H; // If Height not initialized by programmer then it will detect and assign perfect height.
$im = @imagecreate($W, $H)
or die("Cannot Initialize new GD image stream");
$background_color = imagecolorallocate($im, $bgcolor[0], $bgcolor[1], $bgcolor[2]); // RGB color background.
$text_color = imagecolorallocate($im, $color[0], $color[1], $color[2]); // RGB color text.
if ($Justify == 0){ //Justify Left
imagettftext($im, $fsize, $angle, $X, $fsize, $text_color, $font, $text);
} else {
// Create alpha-nummeric string with all international characters - both upper- and lowercase
$alpha = range("a", "z");
$alpha = $alpha.strtoupper($alpha).range(0, 9);
// Use the string to determine the height of a line
$_b = imageTTFBbox($fsize,0,$font,$alpha);
$_H = abs($_b[5]-$_b[3]);
$__H=0;
for ($i=0; $i<$nL; $i++) {
$_b = imageTTFBbox($fsize,0,$font,$s[$i]);
$_W = abs($_b[2]-$_b[0]);
//Defining the X coordinate.
if ($Justify == 1) $_X = $W-$_W; // Justify Right
else $_X = abs($W/2)-abs($_W/2); // Justify Center
//Defining the Y coordinate.
$__H += $_H;
imagettftext($im, $fsize, $angle, $_X, $__H, $text_color, $font, $s[$i]);
$__H += $Leading;
}
}
return $im;
}
/**
* Converts a neogeo spatial relation to its functional postgis equivalent
*/
function neogeoToPostgis($relation, $A, $B) {
switch($relation) {
case "C": return "ST_Intersects(".$A.",".$B.")";
case "DC": return "NOT ST_Intersects(".$A.",".$B.")";
case "DR": return "NOT ST_Equals(".$A.",".$B.")";
case "EC": return "ST_Touches(".$A.",".$B.")";
case "EQ": return "ST_Equals(".$A.",".$B.")";
case "NTPP": return "ST_ContainsProperly(".$B.",".$A.")";
case "NTPPi": return "ST_ContainsProperly(".$A.",".$B.")";
case "O": return "ST_Intersects(".$A.",".$B.") AND NOT ST_Touches(".$A.",".$B.")";
case "P": return "ST_Contains(".$B.",".$A.")";
case "PO": return "ST_Overlaps(".$A.",".$B.")";
case "PP": return "ST_Contains(".$B.",".$A.") AND NOT ST_Equals(".$A.",".$B.")";
case "PPi": return "ST_Contains(".$A.",".$B.") AND NOT ST_Equals(".$A.",".$B.")";
case "Pi": return "ST_Contains(".$A.",".$B.")";
case "TPP": return "ST_Contains(".$B.",".$A.") AND NOT ST_Equals(".$A.",".$B.") AND NOT ST_ContainsProperly(".$B.",".$A.")";
case "TPPi": return "ST_Contains(".$A.",".$B.") AND NOT ST_Equals(".$A.",".$B.") AND NOT ST_ContainsProperly(".$A.",".$B.")";
default: return null;
}
}
/**
* Convert a bounding box get parameter to a postgis Well-Known Text polygon
*
* @param $bboxString the bbox string as delivered as a get parameter
* @return the bounding box as a postgis Well-Known Text Polygon String
*/
function boundingBoxWktParser($bboxString) {
$bbox = explode(',', $bboxString);
if (count($bbox) != 4)
{
header('HTTP/1.1 500 Internal Server Error');
header('Content-type: text/html');
die("Malformed bounding box. A bounding box is defined by 4 values.");
}
$longA = stripslashes($bbox[0]);
$latA = stripslashes($bbox[1]);
$longB = stripslashes($bbox[2]);
$latB = stripslashes($bbox[3]);
if (!is_numeric($longA) || !is_numeric($latA) || !is_numeric($longB) || !is_numeric($latB))
{
header('HTTP/1.1 500 Internal Server Error');
header('Content-type: text/html');
die("The latitude and longitude parameters must be numeric values.");
}
return "POLYGON((".$longA." ".$latA.",".$longB." ".$latA.",".$longB." ".$latB.",".$longA." ".$latB.",".$longA." ".$latA."))";
}
/**
* Convert a point get parameter to a postgis Well-Known Text point
*
* @param $pointString the point string as delivered as a get parameter
* @return the point as a postgis Well-Known Text Polygon String
*/
function pointWktParser($pointString) {
$point = explode(',', $pointString);
if (count($point) != 2)
{
header('HTTP/1.1 500 Internal Server Error');
header('Content-type: text/html');
die("Malformed point. A point is defined by 2 values.");
}
$long = stripslashes($point[0]);
$lat = stripslashes($point[1]);
if (!is_numeric($long) || !is_numeric($lat))
{
header('HTTP/1.1 500 Internal Server Error');
header('Content-type: text/html');
die("The latitude and longitude parameters must be numeric values.");
}
return "POINT(".$long." ".$lat.")";
}
/**
* Convert a polygon get parameter to a postgis Well-Known Text polygon
*
* @param $polygonString the polygon string as delivered as a get parameter
* @return the polygon as a postgis Well-Known Text Polygon String
*/
function polygonWktParser($polygonString) {
$polygon = explode(',', $polygonString);
if (count($polygon) < 8 || (count($polygon) % 2) == 1)
{
header('HTTP/1.1 500 Internal Server Error');
header('Content-type: text/html');
die("Malformed polygon. A polygon is defined by an even number >= 8 of parameters.");
}
//for postgis the last point of a polygon has to be identical to the first point
if ($polygon[stripslashes(count($polygon)) - 2] != stripslashes($polygon[0]) || $polygon[stripslashes(count($polygon)) - 1] != stripslashes($polygon[1]))
{
header('HTTP/1.1 500 Internal Server Error');
header('Content-type: text/html');
die("Malformed polygon. First and last point have to be identical.");
}
$return = "POLYGON((";
$pointStripped = 0.0;
for ($i = 0; $i < count($polygon); $i++)
{
$pointStripped = stripslashes($polygon[$i]);
if (!is_numeric($pointStripped))
{
header('HTTP/1.1 500 Internal Server Error');
header('Content-type: text/html');
die("The parameters must be numeric values.");
}
$return .= $pointStripped;
if ($i % 2 == 1 && $i < (count($polygon) - 1))
{
$return .= ",";
} elseif ($i % 2 == 0) {
$return .= " ";
}
}
$return .= "))";
return $return;
}