Thanks for the comments from Pieren and stephan75,and Sorry for ambiguous question last time. Let me restate. I am designing an android application under Java development. In my project, I want to to find out the shortest path by using OSM . For more details, the flow of the project: 1 ) 1. The nodes in osm file are partitioned into different regions, says 6 regions. Also, pre-calculated shortest path index table is generated 2 ) 2. The server broadcasts the index table and partitioned osm 3 ) 3. The user tells the andriod application what the starting point and destination are. The application downloads the related regions from the servre(accoding to index table) 4 ) 4. From the related regions, the andriod application shows the ways in the map to the user. Question 1: Is it possible that the andriod application can show the map based on the information from related regions? Question 2: Is there any problem if I add "region" into a node ? For example, I use map data form CloudMade downloads site, and add region 1 into the last part such as< node id="274899" version="3" timestamp="2009-10-05T01:41:32Z" ...... region="1" / > Comments are welcomed ! Many thanks !!

Thanks for the comments from Pieren and stephan75,and Sorry for ambiguous question last time. Let me restate. I am designing an android application under Java development. In my project, I want to to find out the shortest path by using OSM . For more details, the flow of the project: 1 ) The nodes in osm file are partitioned into different regions, says 6 regions. Also, pre-calculated shortest path index table is generated 2 ) The server broadcasts the index table and partitioned osm 3 ) The user tells the andriod application what the starting point and destination are. The application downloads the related regions from the servre(accoding to index table) 4 ) From the related regions, the andriod application shows the ways in the map to the user. Question 1: Is it possible that the andriod application can show the map based on the information from related regions? Question 2: Is there any problem if I add "region" into a node ? For example, I use map data form CloudMade downloads site, and add region 1 into the last part such as< node id="274899" version="3" timestamp="2009-10-05T01:41:32Z" ...... region="1" / > Comments are welcomed ! Many thanks !!

Thanks for the comments from Pieren and stephan75,and Sorry for ambiguous question last time. Let me restate. I am designing an android application under Java development. In my project, I want to to find out the shortest path by using OSM . For more details, the flow of the project: 1 ) The nodes in osm file are partitioned into different regions, says 6 regions. Also, pre-calculated shortest path index table is generated 2 ) The server broadcasts the index table partitioned osm 3 ) The user tells the andriod application what the starting point and destination are. The application downloads the related regions from the servre(accoding to index table) 4 ) From the related regions, the andriod application shows the ways in the map to the user. Question 1: Is it possible that the andriod application can show the map based on the information from related regions? Question 2: Is there any problem if I add "region" into a node ? For example, I use map data form CloudMade downloads site, and add region 1 into the last part such as< node id="274899" version="3" timestamp="2009-10-05T01:41:32Z" ...... region="1" / > Comments are welcomed ! Many thanks !!

Thanks for the comments from Pieren and stephan75,and Sorry for ambiguous question last time. Let me restate. I am designing an android application under Java development. In my project, I want to to find out the shortest path by using OSM . For more details, the flow of the project: 1 ) The nodes in osm file are partitioned into different regions, says 6 regions. Also, pre-calculated shortest path index table is generated 2 ) The server broadcasts the index table partitioned osm 3 ) The user tells the andriod application what the starting point and destination are. The application downloads the related regions from the servre(accoding to index table) 4 ) From the related regions, the andriod application shows the ways in the map to the user. Question 1: Is it possible that the andriod application can show the map based on the information from related regions? Question 2: Is there any problem if I add "region" into a node ? For example, I use map data form CloudMade downloads site, and add region 1 into the last part such as< node id="274899" version="3" timestamp="2009-10-05T01:41:32Z" ...... region="1" / > Comments are welcomed ! Many thanks !!