[Freegis-list] Point location software

[Bernhard Reiter]

On Thu, Jan 22, 2004 at 04:35:36PM +0000, antónio rocha wrote:
>    I have been asked to develop a simple GIS solutions to display real
>    time locations available in ASCII or binary files both in
>    geographic and XY positions. 

Many Free Software products can do this in principle.
E.g. gpsdrive, tkgeomap, openmap, thuban.
You might need to adapt them to your needs.

>     The application initial specifications
>    should answer to such simple questions as these. 
>    What is the direct distance to the nearest reference point?  

This is also relatively easy.

>    Who far to get there along the existing roads? 

This one would require quality street level vector data
and a routing algorithm.  Thus is it a complicated task.

E.g.  GRASS (5.7), BBBike and Hoko could do it the routing part.
If you have the data.

>    The application should be able to be integrated
>    into larger 'conventional' information systems.

It depends on the wanted integration.
If all results go into a PostGIS database,
any other client could just read the results.
Mapserver is a good choice to create bitmap results and so on.

>    Could anyone give any hint about a suitable software to get it done?

Your requirements are not precise enough 
to recommend the best software. 
And it probably will be work to find the right one.

My examples above show that there are many Free Software GIS products
that have the principal technical abilities to do the job.

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