[rttopo-dev] Graph Theory vs rttopo

[Andrea Peri]

I apologize for my poor english.
So I hope to understand correctly your question.

Is I understand correctly you:
Our main reference is the ISO 13249 document.
In that document there are effectivelly two kind of topology concepts:
the topologyGeometry and the topologyNetwork.

Our first and actual goal for the librttopo library is to support a
TopologyGeometry ISO13249 implementation.
With more other functions from postgis topology to have a robust and
sufficient affordable envirnment fo r allow at specific engines to
implement topologyGeometry capabilities.

Our test envirornment is spatialite.
But we try to maintain a name level compatibility with postgis to
allow a more easy support of this library in postgis is someone like
to do this.

Actually the topologynetwork is available as a specific implementation
in the spatialite implementation with the librttopo library.
But t is a specific spatialite evolution not supporting at now from
librttopo project e not referred to any ISO documents.

In a future when we start to support the network the dstinguish will
follow the ISO13249 reference where the Network function has all the
NET suffix.

And so we could easibly suppose that when we will add a function that
is not in the ISO docs, but is referred to the NETwork it will have
the NET suffix in it name.

Regards,

Andrea Peri.


2016-05-01 19:58 GMT+02:00 Brian M Hamlin <maplabs at light42.com>:
> With the name 'topo', connectivity of nodes must be an important design direction here.
> Perhaps some naming decisions early could make the library more usable and clear ..
>
> for example, distance (d) in graph theory is the number of "hops" between nodes, yet geodata constantly refers to distance as a 2D (or more) measure. What kinds of naming could make this fundamental distinction clear, for everyday use ? Are there other naming examples, moving away from graph theory, towards more applied geodata ?
>
> --
> Brian M Hamlin
> OSGeo California Chapter
> blog.light42.com
>
> _______________________________________________
> librttopo-dev mailing list
> librttopo-dev at lists.osgeo.org
> http://lists.osgeo.org/mailman/listinfo/librttopo-dev



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Andrea Peri
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qwerty àèìòù
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