[Freegis-list] RE: Freegis-list digest, Vol 1 #134 - 1 msg

[Frank Koormann]

Dear Shankar,

* Shankar Narayanan.K , STC Chennai (shankar_narayanank at msdc.hcltech.com) [010326 13:30]:
> 
>    Dear all,
>                Can somebody explain me the concept of "Dynamic
>    Segmentation".If a user wants to see the pavement condition or the
>    traffic flow at a particular road section,then he should create a
>    seperate "Event Table"? This event table will be derived from the
>    already existing database tables? If yes,then each record in that
>    event table will have an associated theme for display purpose? In
>    other words,do we need to create a seperate shape file(.shp,.dbf,.shx)
>    for dynamically segemented data. Please clarify this.

Although AFAIK this is a ESRI specific feature I will try to explain
in brief: DynSeg allows you to display data apart from the general
attribute concept. In your example you first have to define a
measurement system on the road net (a line theme). Having your data
prepared you would be able to display further information with reference
to the measurement system (like accidents (points) located by 
kilometers/miles or pavement condition (from km to km)) and therewith
independent from the underlying line segmentation. Thus this data 
is indepentend from a specific theme.

>    Is there a free
>    tool (like mapserver) that provides dynamic segmentation.I want to see
>    a demo of the DS module.Will be grateful if I get the URL fr this.
>    

Since the concept of DynSeg is an ESRI specific approach, i don't think
there is an application in the focus of this list supporting the feature.
At least I don't know any one.

Regards,

    Frank

-- 
Frank Koormann                              http://intevation.net/~frank/
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