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	<title>Eric Lontong &#187; pgDijkstra</title>
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	<link>http://www.lontongcorp.com</link>
	<description>GeoIT! GeoIT!! GeoIT!!!</description>
	<lastBuildDate>Mon, 30 Aug 2010 16:06:44 +0000</lastBuildDate>
	
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			<item>
		<title>pgDIJKSTRA 2-way</title>
		<link>http://www.lontongcorp.com/2007/04/29/pgdijkstra-2-way/</link>
		<comments>http://www.lontongcorp.com/2007/04/29/pgdijkstra-2-way/#comments</comments>
		<pubDate>Sun, 29 Apr 2007 14:11:16 +0000</pubDate>
		<dc:creator>Eric Lontong</dc:creator>
				<category><![CDATA[Geo]]></category>
		<category><![CDATA[dijkstra]]></category>
		<category><![CDATA[GIS]]></category>
		<category><![CDATA[pgDijkstra]]></category>
		<category><![CDATA[pgRouting]]></category>
		<category><![CDATA[PostGIS]]></category>
		<category><![CDATA[PostgreSQL]]></category>
		<category><![CDATA[routing]]></category>
		<category><![CDATA[tracking]]></category>

		<guid isPermaLink="false">http://lontongcorp.com/?p=31</guid>
		<description><![CDATA[




			
				
			
		
Dari milis mapserver-id seputar fungsi pgDijkstra untuk routing 2-arah. Udah agak lama juga sih tapi sebenarnya pengen dicoba dulu sebelum diposting di sini. Cuma karena kesibukan yang sangat saat ini, ditumpahkan apa adanya dulu deh 

Sekedar mau menambahkan. pgdijkstra sebenarnya bisa dipakai untuk perhitungan jalan searah.
Caranya field cost dan reverse_cost keduanya diisi.
Untuk arah yang tidak [...]]]></description>
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		<slash:comments>11</slash:comments>
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		<item>
		<title>PostGIS Routing (bag.2)</title>
		<link>http://www.lontongcorp.com/2007/04/01/postgis-routing-bag2/</link>
		<comments>http://www.lontongcorp.com/2007/04/01/postgis-routing-bag2/#comments</comments>
		<pubDate>Sat, 31 Mar 2007 20:55:18 +0000</pubDate>
		<dc:creator>Eric Lontong</dc:creator>
				<category><![CDATA[Geo]]></category>
		<category><![CDATA[dijkstra]]></category>
		<category><![CDATA[GIS]]></category>
		<category><![CDATA[pgDijkstra]]></category>
		<category><![CDATA[pgRouting]]></category>
		<category><![CDATA[PostGIS]]></category>
		<category><![CDATA[PostgreSQL]]></category>
		<category><![CDATA[routing]]></category>
		<category><![CDATA[tracking]]></category>

		<guid isPermaLink="false">http://lontongcorp.com/?p=21</guid>
		<description><![CDATA[




			
				
			
		
Lanjutan tutorial sebelumnya&#8230;..


Ketujuh, mapfile dengan menggunakan fungsi
shortest_path_as_geometry(&#8216;nama_table&#8217;,source_oid,target_oid):
CONNECTIONTYPE postgis
CONNECTION "host=localhost dbname=roads user=routing password=password"
DATA "the_geom from (
         SELECT gid, the_geom from shortest_path_as_geometry('route', 1, 4552)
         ) as route using unique gid using srid=-1"
Catatan: untuk menampilkan hasil routingnya, hanya dengan memanggil fungsi shortest_path_as_geometry() [...]]]></description>
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		<slash:comments>7</slash:comments>
		</item>
		<item>
		<title>PostGIS Routing (bag.1)</title>
		<link>http://www.lontongcorp.com/2007/04/01/postgis-routing-bag1/</link>
		<comments>http://www.lontongcorp.com/2007/04/01/postgis-routing-bag1/#comments</comments>
		<pubDate>Sat, 31 Mar 2007 20:32:56 +0000</pubDate>
		<dc:creator>Eric Lontong</dc:creator>
				<category><![CDATA[Geo]]></category>
		<category><![CDATA[dijkstra]]></category>
		<category><![CDATA[GIS]]></category>
		<category><![CDATA[pgDijkstra]]></category>
		<category><![CDATA[pgRouting]]></category>
		<category><![CDATA[PostGIS]]></category>
		<category><![CDATA[PostgreSQL]]></category>
		<category><![CDATA[routing]]></category>
		<category><![CDATA[tracking]]></category>

		<guid isPermaLink="false">http://lontongcorp.com/?p=17</guid>
		<description><![CDATA[




			
				
			
		
Pernah lihat ato nyoba aplikasi yahoo maps?
Saat kita mencari arah atau jalur terpendek dari satu lokasi ke lokasi lainnya, marker jalan muncul sebagai penunjuk arah jalur terpendek yang harus kita tempuh. Aplikasi ini menggunakan metoda Vertex Simplication dengan menghitung jarak terpendek. Sampai saat ini, untuk menangani datanya dari database postgresql yang kita simpan dipakai diprogram [...]]]></description>
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