I'm having issues getting the pgrouting workshop to work on Postgresql 9.2/PostGIS 2.11 and pgrouting 2.0 on windows.
How can I rewrite the following php/sql code and make it compatible with my version:
<?php
// Database connection settings
define("PG_DB" , "routing");
define("PG_HOST", "localhost");
define("PG_USER", "postgres");
define("PG_PORT", "5432");
define("PG_PASSWD", "*******");
define("TABLE", "eastlegon");
$counter = $pathlength = 0;
// Retrieve start point
$start = split(' ',$_REQUEST['startpoint']);
$startPoint = array($start[0], $start[1]);
// Retrieve end point
$end = split(' ',$_REQUEST['finalpoint']);
$endPoint = array($end[0], $end[1]);
// Find the nearest edge
$startEdge = findNearestEdge($startPoint);
$endEdge = findNearestEdge($endPoint);
// FUNCTION findNearestEdge
function findNearestEdge($lonlat) {
// Connect to database
$con = pg_connect("dbname=".PG_DB." host=".PG_HOST." user=".PG_USER." password=".PG_PASSWD);
$sql = "SELECT gid, source, target, the_geom,
distance(the_geom, GeometryFromText(
'POINT(".$lonlat[0]." ".$lonlat[1].")', 4326)) AS dist
FROM ".TABLE."
WHERE the_geom && setsrid(
'BOX3D(".($lonlat[0]-200)."
".($lonlat[1]-200).",
".($lonlat[0]+200)."
".($lonlat[1]+200).")'::box3d, 4326)
ORDER BY dist LIMIT 1";
$query = pg_query($con,$sql);
$edge['gid'] = pg_fetch_result($query, 0, 0);
$edge['source'] = pg_fetch_result($query, 0, 1);
$edge['target'] = pg_fetch_result($query, 0, 2);
$edge['the_geom'] = pg_fetch_result($query, 0, 3);
// Close database connection
pg_close($con);
return $edge;
}
// Select the routing algorithm
switch($_REQUEST['method']) {
case 'SPD' : // Shortest Path Dijkstra
$sql = "SELECT rt.gid, AsText(rt.the_geom) AS wkt,
length(rt.the_geom) AS length, ".TABLE.".id
FROM ".TABLE.",
(SELECT gid, the_geom
FROM dijkstra_sp_delta(
'".TABLE."',
".$startEdge['source'].",
".$endEdge['target'].",
3000)
) as rt
WHERE ".TABLE.".gid=rt.gid;";
break;
case 'SPA' : // Shortest Path A*
$sql = "SELECT rt.gid, AsText(rt.the_geom) AS wkt,
length(rt.the_geom) AS length, ".TABLE.".id
FROM ".TABLE.",
(SELECT gid, the_geom
FROM astar_sp_delta(
'".TABLE."',
".$startEdge['source'].",
".$endEdge['target'].",
3000)
) as rt
WHERE ".TABLE.".gid=rt.gid;";
break;
case 'SPS' : // Shortest Path Shooting*
$sql = "SELECT rt.gid, AsText(rt.the_geom) AS wkt,
length(rt.the_geom) AS length, ".TABLE.".id
FROM ".TABLE.",
(SELECT gid, the_geom
FROM shootingstar_sp(
'".TABLE."',
".$startEdge['gid'].",
".$endEdge['gid'].",
3000, 'length', false, false)
) as rt
WHERE ".TABLE.".gid=rt.gid;";
break;
} // close switch
// Database connection and query
$dbcon = pg_connect("dbname=".PG_DB." host=".PG_HOST." user=".PG_USER." password=".PG_PASSWD);
$query = pg_query($dbcon,$sql);
// Return route as XML
$xml = '<?xml version="1.0" encoding="UTF-8" standalone="yes" ?>'."\n";
$xml .= "<route>\n";
// Add edges to XML file
while($edge=pg_fetch_assoc($query)) {
$pathlength += $edge['length'];
$xml .= "\t<edge id='".++$counter."'>\n";
$xml .= "\t\t<id>".$edge['id']."</id>\n";
$xml .= "\t\t<wkt>".$edge['wkt']."</wkt>\n";
$xml .= "\t\t<length>".round(($pathlength/1000),3)."</length>\n";
$xml .= "\t</edge>\n";
}
$xml .= "</route>\n";
// Close database connection
pg_close($dbcon);
// Return routing result
header('Content-type: text/xml',true);
echo $xml;
?>
Thanks,
The code you posted is from the pgRouting 1.0 workshop and will not work with pgRouting 2.0 there is a workshop for pgRouting 2.0 and you should be looking at that. pgRouting 2.0 is a major rewrite of the whole pgRouting API and there is no compatibility betwen them.