have you had a chance to look at University of Minn Mapping Server? http://www.esri.com/software/arcgis/arcgismobile/index.html M-- ----- Original Message ----- Wrom: OQKEDOTWFAOBUZXUWLSZLKBRNVW To: <pgsql-general@xxxxxxxxxxxxxx> Sent: Thursday, November 08, 2007 3:14 PM Subject: Open Source GIS System > Hi, > > I am preparing to build up a GIS system as part of my University > Masters Thesis. My final aim is to build a system where the user > inputs (or via GPS) inputs the location where he is and the location > where he want to go and gets the route planned. My main concern will > be that the driver can decide which route to take, if the shortest > distance, least time consuming or else least fuel consumption. Also > the route planned has to be aware of certain problems that the network > can find, for example road blocks, or some other type of incidents / > accidents. May I point out that I need to use only Open Source > Software. > > I am think to use this algorithm to work with : > 1. User inputs starting and ending > 2. A script checks the options sent by the user > 3. The streets which are "blocked" by something are mentioned as > inactive > 4. A route is planned > 5. The route is sent as an image to user > 6. Wait 20 seconds > 7. If start = end goto 10 Else : > 8. Reread position (maybe using GPS.. or random new coordinates from > the map) > 9. Go back to step 3 > 10. Send a msg : Thanks for driving safely or some other msg :) > > > Now, from the research I have done, it seems I need these Open Source > software, and this is what I got the presumption they will suffice > for : > > PostgreSQL + PostGIS : Basically where to store the data > GRASS : For data Management > QGis (with GRASS extension) : Frontend for viewing the data > pgRouting : To create the route > OpenLayers : To create the image to be sent to the user's browser. I > want a static image which then will be updated every lets say 20 > seconds. > PHP : To write the scripts to communicate with the PostGIS / User + > HTML 4.0 > > What do you think about my setup please? Is there some software you > think I should replace or rethink about using? Following my algorithm > and the software I am looking at, I think that I need to do like > this : > a. A script in PHP which captures the data and then echo the image > using OpenLayers to the user's browser > b. QGIS (with the save file of the base-map and the roads marked) > which allows the Road Network Admin to disable any Road, and another > PHP Script that can read the starting, ending coordinates of the road > and allow a User to report that there are problems in the road. > > Any comments / suggestions / change of plans would be extremely > appreciated at this stage, > > Whilst thanking all of you for taking time to read this post, I really > wish to hear your opinions. > > Thanks and Regards > > Matthew > > > ---------------------------(end of broadcast)--------------------------- > TIP 5: don't forget to increase your free space map settings > ---------------------------(end of broadcast)--------------------------- TIP 9: In versions below 8.0, the planner will ignore your desire to choose an index scan if your joining column's datatypes do not match
