[mapserver-users] optimal path between two points.

[Valeria Muñoz]

Hi Stephen

 thanks for the tip... I read the example and implements it with my data.

 Now my problem is :how to rescue the data for instructions,distance,time
etc? ..
 how can I know whether to turn right or left?

RG.
2009/1/20 Stephen Woodbridge <woodbri at swoodbridge.com>

> Valeria,
>
> You should really look at the example provided with:
> http://pgrouting.postlbs.org/wiki/WorkshopFOSS4G2007
>
> This is what I started with and then made my own modifications. The above
> workshop should walk you through how to setup a pgRouting without my
> additional hacks which will only confuse you at the moment.
>
> My dd_routing.php is a modified version of ax_routing.php that is included
> in the tutorial tarball.
>
> You might also want to read some of these pages if you have not already:
> http://www.google.com/search?hl=en&q=pgRouting&btnG=Google+Search
>
> Best regards,
>  -Steve W
>
> Valeria Muñoz wrote:
>
>> hi Stephen.. thank for the tips...
>> I have reviewed the code but can only see the dd.html. can you send me the
>> dd_routing.php? .
>>  please
>>
>> thanks for everything
>> 2009/1/19 Stephen Woodbridge <woodbri at swoodbridge.com <mailto:
>> woodbri at swoodbridge.com>>
>>
>>    Valeria Muñoz wrote:
>>
>>        frank
>>         thanks for the tips.  I use prRouting  and create the table
>>        dijsktra_result. Now how can I implement with my mapfile? , how
>>        deliver the data .. have some sample code?
>>
>>        thanks for your help.
>>
>>        2009/1/19 Frank Warmerdam <warmerdam at pobox.com
>>        <mailto:warmerdam at pobox.com> <mailto:warmerdam at pobox.com
>>
>>        <mailto:warmerdam at pobox.com>>>
>>
>>
>>           Valeria Muñoz wrote:
>>
>>               Hi
>>                I would like to implement the service "optimum path
>>        between 2
>>               points," can someone help me to be able to implement it?.
>> The
>>               general idea is that a user picks a point A and point B and
>> a
>>               display on the map the best route to get from point A to B.
>>
>>
>>           Valeria,
>>
>>           MapServer itself does not do route calculation.  You might
>>        find some
>>           useful pointers on this page:
>>
>>            http://wiki.osgeo.org/wiki/OpenRouter
>>
>>           I think the pgRouting (built on postgres/postgis) is the best
>>        bet for
>>           integration with MapServer.
>>
>>
>>    So you have various options depending on the client software you are
>>    using. So here are some ideas for you:
>>
>>    1) put the route into a results table with a unique id, and pass the
>>    unique id back to the client where it can then request the route
>>    image via a mapserver mapfile the connects to the postgis database
>>    and requests the layer be drawn with the unique id to select the
>>    appropriate route.
>>
>>    2) make an ajax request to generate the route and return the
>>    polyline as  an xml or json object back to the client. The client
>>    then parses the result document and displays the route over the map.
>>
>>    3) if you use OpenLayers for the client then you can use it to help
>>    you do 1) as an image, or 1) as a wfs layer, or 2) as a vector layer.
>>
>>    You can look at the source for my demo page
>>    http://imaptools.com/leaddog/routing/dd.html which does this with a
>>    modified version of pgRouting (pgRouting does not return
>>    turn-by-turn directions), but you should be able to modify my code
>>    to work with pgRouting. I wrote a simple php script to proxy the
>>    route request into postgres and to format the results back to the
>>    client.
>>
>>    Look this over and see how far you can get with this. If you get
>>    stuck, ask and I'm sure we can get you moving in the right direction.
>>
>>
>>
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: http://lists.osgeo.org/pipermail/mapserver-users/attachments/20090120/543c0a03/attachment.html