[OHM] Historic Digest, Vol 82, Issue 3

Sat May 16 15:14:01 UTC 2020

Hi Noel, Guilherme,

Those state and country lines you see & places are actually from Natural
Earth Data <https://www.naturalearthdata.com/> & they're aren't really
supposed to be there... that's one of the items that needs to be cleaned
up. OSM actually uses Natural Earth Data as a substitute for its own data
when you're zoomed further out... it's another item we'll have to adjust &
work around, as there's no Historical Version of Natural Earth (although
I'm trying to collect or create shape files of old boundaries here
<https://github.com/OpenHistoricalMap/data>.)

Natural Earth is a bit of a GIS & Internet treasure due to its
completeness, consistency, and also its license, which is public domain
<https://www.naturalearthdata.com/about/>.

But... back to OHM licensing. I've been an advocate of cc0 licensing by
default, item-level licensing for exceptions, and of not importing OSM
data* at scale into OHM. That said, I'm not the only one involved in this
project. I'd love to get more people involved. Perhaps we need a licensing
committee to put together some policies & practices? I'd support anyone
taking the lead on that. : )

Which reminds me: we'll restart our regular meeting schedule & I'm also
thinking of a way to have ongoing async discussions on topics like these.
Maybe some more slack rooms? I figure we'll just add a few more until
OSM-US kick us out?

Last: bug filing! As soon as we get the github organizations squared away
and code moved to where it should be, we'll post a link for posting bugs
that you come across.

Thanks,
Jeff

* Quick observations about importing OSM data:
- OSM as an organization and legal entity is very protective of its data &
should be!
- The OSM license is designed to be viral, literally to infect the entire
OHM database, should we import too much OSM data into OHM
- If this happens, we won't be able to freely export OHM data & we'll run
into similar issues OSM has with its licensing, which are both subtle and
impactful
- That all said, I'd love to figure out a way to have as much OSM data as
possible in OHM. One way might be to invite authors of OSM data to
recontribute their data to OHM...
- Bottom line: we need more heads wrapped around this issue than just mine!

On Sat, May 16, 2020 at 7:02 AM Noel MacLochlainn <noel.mcloughlin at gmail.com>
wrote:

> Hi everyone,
>
> Great to see the site back up!!  I will try to use in the near future.
>
> I have the same question as Guilherme.  Has new data introduced to OHM
> database produced an updated background default map?  I didn't notice that
> on the previous site.  If there is new data introduced from OSM then does
> it have start/end dates?  Just wondering, I'm new to geomapping so maybe
> I'm misunderstanding some thing or technology.
>
> regards
> Noel
>
> On Sat, May 16, 2020 at 12:05 PM <historic-request at openstreetmap.org>
> wrote:
>
>> Send Historic mailing list submissions to
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>> When replying, please edit your Subject line so it is more specific
>> than "Re: Contents of Historic digest..."
>>
>>
>> Today's Topics:
>>
>>    1. Re: OHM Updates (Guilherme Braga Alves)
>>
>>
>> ----------------------------------------------------------------------
>>
>> Message: 1
>> Date: Fri, 15 May 2020 21:41:22 -0300
>> From: Guilherme Braga Alves <gbragaalves at gmail.com>
>> To: Open Historical Map <historic at openstreetmap.org>
>> Subject: Re: [OHM] OHM Updates
>> Message-ID:
>>         <CANXtPgb2pLDoKzMod+Ew=Zj=
>> KVJEWjWMOtrmHRfj1dLK05Fvsw at mail.gmail.com>
>> Content-Type: text/plain; charset="utf-8"
>>
>> Hi Jeff,
>>
>> it is great to see the site back up. The new interface is also great.
>>
>> I'm finding some errors, but I guess it is expected at this point. On the
>> other hand, I can confirm that I was able to login to the platform and
>> make
>> edits.
>>
>> My main question right now is about some new features added to the map,
>> like state lines (they were not there before, were they?), cities and
>> towns
>> and also some roads shown at larger zoom levels. Where did this data came
>> from? Does it suggest a change about our policies regarding OpenStreetMap?
>>
>> To be more direct: is there any discussion about adapting OHM license in
>> order to make possible to import data from OSM?
>>
>> Thanks for all the great work all of you involved in these new changes.
>>
>> Hope everyone is fine in such difficult times,
>> Guilherme.
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>> End of Historic Digest, Vol 82, Issue 3
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-- 
Jeff Meyer
206-676-2347
osm: Open Historical Map (OHM)
<http://wiki.openstreetmap.org/wiki/Open_Historical_Map> / my OSM user page
<http://www.openstreetmap.org/user/jeffmeyer>
t: @OpenHistMap
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