[talk-au] Effect of license change

[David Groom]

----- Original Message ----- 
From: "Ian Sergeant" <inas66+osm at gmail.com>
To: "Mark Pulley" <mrpulley at lizzy.com.au>
Cc: <talk-au at openstreetmap.org>
Sent: Wednesday, March 28, 2012 3:29 AM
Subject: Re: [talk-au] Effect of license change


> On 28 March 2012 13:03, Mark Pulley <mrpulley at lizzy.com.au> wrote:
>
>> 1. Should we import the new ABS boundaries now (as the old ones will go),
>> then use this data to create a new coastline? (This will also be useful 
>> in
>> recreating rivers/creeks that currently use ABS data - although it looks
>> like there won't be time before April 1st to do this.)
>>
>
> If the current timetable is maintained, then this isn't going to be a
> practical solution.  During the time that the deletion is taking place, it
> may not even be practical for reasons of possible conflicts.
>
> However, don't forget that the coastline shape files are generated as a
> separate process right now, and I'm hoping that we won't go through the
> process of recreating those which flood half the world.

I'm really hoping that for a long time after 1 April the sysadmins do keep 
the current CC-BY-SA coastline files which are used to generate the 
coastline outline in the Mapnik layer.  However we must remember that there 
are other users of OSM data, and these users may generate their coastline 
directly from the planet file


> I'm kinda assuming
> worst case that someone will simply insert PGS data into the missing
> sections before regenerating them.  This should give us more time to do 
> the
> right thing here.
>

Firstly who is this "someone" ? I may be wrong but I don't expect the 
sysadmins will do it, so it will come down to "ordinary" OSM users to add 
this back into OSM.  I think I can relatively easily re-import PGS coastline 
data ( I recently did a re-import of some PGS data in the Arabian Gulf) , 
though it may be a little time consuming.  But the question then comes back 
to: should the PGS data be imported as a short term fix, or is it better to 
wait until someone has more time to import ABS?

If it is suggested that PGS be re-imported, then I presume it will best to 
wait till after the new database goes live? It seems a pity to start 
deleting good data from OSM now, given that this will degrade the last 
available  CC-BY-SA planet file.

David

> This is why my thinking is that there are other priorities over 
> coastlines.
>
> Also, have a look at the AGRI data for rivers and creeks outside of urban
> areas.  It appears better than the ABS data in most cases I have looked
> at.  It is good for coastlines too.
>
> 2. Should we undelete the previous ways that formed the coastline (as in
>> some areas these were deleted when the ABS data was incorporated into the
>> coastline)? (I don't know if the old coastline data is compliant or not.)
>> (Should we also do this for the state boundaries?)
>>
>
> No coastline was automatically deleted when the ABS2006 data was imported,
> so its all a lovely mangle of moves, inserts, splits, original PGS, yahoo,
> ABS, bing and nearmap.
>
> Finding nicely deleted ways is rare, and pulling back older longer 
> versions
> of trimmed ways via the API I've found to be extraordinarily difficult.
>
> Ian.
>


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