[OSM-talk] Slippy map - Mapnik layer UK coastlines

Artem Pavlenko artem at mapnik.org
Sat Mar 24 10:41:18 GMT 2007


Hi Mike,

>
> From the perspective of a contributor and editor of OSM data rather  
> than technical,  I'd certainly endorse storing coastline data  
> separately.  Currently, it takes forever to get the data uploaded  
> in the first place, greatly slows down downloads of an editing area  
> of interest when I have no interest in editting the coastline, and  
> when I am editting it is extremely fiddly and user-error causing  
> when it crosses other data.
>
> I'd see the advantages as:
>
>         - Gives ability to store more than one coastline set
>
>         - To be able to retrieve it as a separate layer would make  
> coastline maintenance much easier.
>
>         - Makes general editting easier
>
>         - Protects it from mistakes when doing general editting,  
> which will become important if we encourage "drive by" editing of  
> our data by the general public.
>
>         - A good test bed for determining whether general  
> separation is a good thing (political boundaries, bus routes,  
> specialist POI sets, ...) and for enhancing edit and rendering  
> tools to cope.
>
>
> Mike
>
>


Good points.


Artem Pavlenko
http://mapnik.org



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