[mapserver-users] network analysis in mapserver

[Seamus Thomas Carroll]

Hi,

The site looks very good.  How can I get a copy of the code?

Seamus

On Mon, 15 Jul 2002 woodbri at swoodbridge.com wrote:

> Seamus,
> 
> Mapserver doesn't have this functionality as you probably know at 
> this point. I have code that does what you describe below that could 
> be adapted to any number of similar application. To be able to run 
> fast (ie for a web application) I build a directed graph that is then 
> used to compute the shortest path method and then I extract the 
> required segments into a shape file that can be rendered by 
> mapserver.
> 
> I have a live demo running on my site at
>     http://iMapTools.com/demos
> click the "Get A Route" link
> 
> This demo is using the US National Highway Planning Network 
> shapefiles for the directed graph, but a directed graph could be 
> built for other networks from shapefiles or other data sources.
> 
> -Stephen Woodbridge
> 
> On 12 Jul 2002 at 9:43, Seamus Thomas Carroll wrote:
> 
> > Hi,
> > 
> > I have post GIS installed but I am not currently using it.  I have a road 
> > network for British Columbia and some other provinces and two sets of 
> > point data.  I need to be able to find the shortest path along from point 
> > A (postal code) to point B (hospital data) using an impedance taken from 
> > the dbf.  For example, the length in metres for an arc or the amount of 
> > time to travel an arc.  I need the total impedance and a shape file 
> > representing the path as a result.  Would any of these tools solve this 
> > problem for me?
> > 
> > Seamus 
> > 
> > 
> > On Fri, 12 Jul 2002, Robert W. Burgholzer wrote:
> > 
> > > Seamus,
> > > Are you using postGIS by chance? I am working on a set of tools that
> > > might not be network analysis, but we may have some overlap that we
> > > could share.
> > > 
> > > I too am seeking independence from esri, and postgres extendability (all
> > > functions can be written in C, or several other languages) seems to me
> > > to be a potential for high quality, open source GIS tools. Already there
> > > are several geo-processing routines out there acting in
> > > postgres/postgis. What type of analysis functions are you looking for?
> > > 
> > > Rob
> > > 
> > > 
> > 
> > 
> 
>