[Talk-in] Delhi: OSM for navigation

[निशांत / Nishant]

> I have been working along with gosmore and improving quality (beside regular
> surveys).
> But there seems to be a hard hurdle for general routing logic to apply on
> indian streets.

I have seen Gurgaon maps coming up very fast of late and could
identify your contribution. I had tried gosmore and
http://yournavigation.org for offline routing, and was ok with the
routes offered.

But this time what I tried to do was use a commercially available
device for navigation. There was no problem with routing algorithm,
instead it was with map data quality. e.g. many areas are marked
incorrectly, many roads are drawn incorrectly and one can see multiple
lines running along same road.

The problem is faced, when say, I load the map for NCR and search for
sector-18. Gurgoan and Noida both have Sector-18, but since areas are
not marked properly, it displays two results "Sector-18, National
Capital Region" because Garmin tries to identify the area by the
nearby city/town/locality name. This brings up another issue, most of
the localities in Gurgaon (DLF-3, Sushant Lok, Udyog Vihar etc.) are
being identified as "Cities" by the device. So, may be we need to
change the classification of these areas as "Locality" or "Land
User->Residential".

I also believe, routing logic also takes into account what kind of
roads it has to choose from (motorway, primary, secondary, tertiary
etc.), and there is still some incosistency in classifying the roads
too.

IMHO, creating tracks is a comparatively easier job but the tough job
is to create a decent map with correct information accomodating
details as fine as possible. While creating the map, if we ignore
small things that seem not so important to us may become important
while trying to find route or navigate using the map.

Once we start cleaning up the data, routing algorithm might start
loving Indian roads,

> Where is your locality in NCR?

I am in DLF Phase 3.

regards,
Nishant
-- 
How about some patent on "(a+b)2 = a2+2ab+b2". Choose free software!
http://www.nishants.net