[Imports] Thimphu City data import

Rafael Avila Coya ravilacoya at gmail.com
Fri Jul 8 12:46:52 UTC 2016

Hi, Martin:

In previous imports, like the Tanzania roads import, I was letting for 
users the step of simplifying ways, but I was convinced to do that as a 
previous step. It wouldn't be a problem to leave the ways not 
simplified, and let every user decide.

Anyway: the simplification I did it with the simplify-way.max-error=3.0 
(default). I did it now with that field at 1.0 (1 m máximum error), and 
it still reduces the number of nodes from 27,217 down to 10,579 , and 
the quality is (as expected) very equal to the original one. So I would 
change the streets file from the 3.0 simplified to the 1.0 simplified.

Therefore, I also changed the file of the modified data, and changed the 
link in the wiki too: 



On 08/07/16 11:03, Martin Koppenhoefer wrote:
> sent from a phone
>> Il giorno 07 lug 2016, alle ore 17:24, Rafael Avila Coya <ravilacoya at gmail.com> ha scritto:
>> Anyway, the reason is simple: We reduce the number of nodes.
> this is what douglas-peucker is supposed to do, it is not a "reason" but a result. I think the question was why you believe that fewer details are better.
> What setting do you use?
> Cheers,
> Martin

More information about the Imports mailing list