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#1 2012-06-29 09:11:34

marek kleciak
Member
Registered: 2010-10-11
Posts: 8,439

Drawing of rows of buildings

Normally we draw each building as a separate outline with building=yes ( or residential or what ever) and with address.
When we do it in Megacities with a lot of small buildings, navigation systems based on OSM doesn´t work well because of data amount.

In such cases i would suggest a kind of generalisation for data reduction.

Example see:

http://osm.org/go/zmjsqSixL--

Best regards,

Marek

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#2 2012-06-29 13:52:02

Oberaffe
Member
Registered: 2012-03-03
Posts: 65

Re: Drawing of rows of buildings

I think this is not a problem at the moment.
e.g. the USA is much huger then India and there is no problem with navigation systems.

regards


old postcards from around the world.
Postcards / Ansichtskarten

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#3 2012-06-29 13:58:27

marek kleciak
Member
Registered: 2010-10-11
Posts: 8,439

Re: Drawing of rows of buildings

It´s no theory - it´s experience with navigation data: Indian buildings are significantly smaller than USA buildings.
The problem is the number of elements per km2. I tested it with real data from India.

All this elements loaded in RAM causes system crash sad

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#4 2012-07-09 16:25:45

mailsandeepdagar
Moderator
From: India & Germany
Registered: 2012-05-24
Posts: 18

Re: Drawing of rows of buildings

I agree with Marek. Because of population effect many places are very small & congested compare to western world.

P.S. Past suggest: Approach (Tricks & Tips) working outside India, hardly work in India and vice versa wink

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