[OSM-talk] Old GPS data

[Yann Coupin]

Also, and I've already posted here about that a while ago, it would  
really help if hdop, and eventually vdop, wasn't lost in the  
anonymization process. This is an important data when tracing, but  
unless you know who published the track and you can download the  
source, you don't have access to that information which is really a  
pity.
And even if it implies a downtime while the database schema is  
upgraded, it would really be worth it.

Yann

Le 28 juil. 09 à 10:28, John Smith a écrit :

>
> --- On Tue, 28/7/09, Maarten Deen <mdeen at xs4all.nl> wrote:
>> That is not indicative. A road could remain unchanged for
>> the last 100 years
>> or could have been demolished last year. What would be the
>> expiration time of
>> a track? And would you be prepared to lose correct GPS data
>> to do this?
>
> Also as Liz put, some areas have very few traces so removing based  
> on age is generally a bad idea, where as software specifying fewer  
> tracks to show only the most recent might be the best way to handle  
> it.