Hemant. Interesting problem. I think you are on the right track  
looking into ogr and/or PostGIS. I would try this first in PostGIS  
using a few SQL scripts.

In general I would try unioning your whole dataset and then re- 
splitting the linework at the desired interval. I did something  
similar (though a bit more involved) with the help of PostGIS users a  
while back:

http://www.mail-archive.com/[email protected]/msg04582.html

Dane

--- \o/ ---
Sent from my phone

On Dec 24, 2009, at 10:33 PM, Hemant Bist <[email protected]> wrote:

> This is not necessarily a Mapnik question. I am hoping someone can  
> point me to the right tools.
>  I have got a polyline shapefile where each segment is roughly 1  
> meter, and each polyline has roughly 200 segments.
> I want to "resample" to convert the polyline to have a segment of  
> roughly 10 meter and only 20 segments.
>
> Are there any tools that can help do that, or I have to write my own  
> heuristic by reading shapfile and writing back.
> I have looked at ogr2ogr and postgis briefly, but I didn't find  
> anything relevant there.
>
> Happy holidays,
> HB
>
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