[OHM] Open Historical map

Wed May 2 15:17:02 UTC 2018

Hi Jonathan -

Just following up here... you should be able to see some new historical
boundary information on OHM at
http://www.openhistoricalmap.org/#map=6/47.665/-116.136&layers=H. If it
doesn't pop up at first, be sure to clear your browser cache. These are old
borders of American territories and states.

I just loaded this info yesterday & am still playing with the tagging a
bit. I've highlighted some of those fields in the screenshot here:
https://imgur.com/a/bL34gkC.

These boundaries are overlapping and hence, a mess. I'm hoping to use this
data as a test for the time slider work underway.

Thanks,
Jeff

On Tue, May 1, 2018 at 12:55 PM, Jeff Meyer <jeff at gwhat.org> wrote:

> Hi Jonathan -
>
> Great to hear about your interest & you're asking at just the right time.
>
> We're about to get busy uploading some historical boundaries, and
> hopefully also having a time slider to be able to select a view for a
> particular time period. Note that I'm saying we're getting busy, but not
> showing a specific ETA for having this capability... : ) Hopefully, soon.
>
> Big area boundaries can be tricky to import, though. Do you have
> experience with any of the bulk upload scripts? If not, let's talk. I'm
> going to be brushing up on them myself this week.
>
> Also, do you have core shapefiles you're working with as a basis for the
> import? We could possibly store the data here: https://github.com/
> OpenHistoricalMap/data
>
> To answer your questions directly:
>
> 1) It should be both realistic and doable, but probably harder than your
> typical small-scale OSM-style mapping. Hopefully, we can figure out how to
> make that easier at some point here.
>
> 2) You should be able to look at whatever sources you can get your hands
> on & get cleared copyright-wise. Ideally, your sources will be cc0 or
> public domain, but we should also be tagging sources on the OSM-level
> entities for now, until we get clearer practices on tagging and citing
> data. If we store source data somewhere like the github repo, we should be
> in pretty good shape.
>
> 3) Regarding moving data from OSM to OHM, I'd highly suggesting adding
> license and source tags to all of your points or ways or relations. e.g.
> source:openstreetmap, license:odbl. Again... ideally, we'll be getting our
> border data from somewhere that is cc0 or public domain. But... based on
> what I can see right now, we're going to need to figure out a way to work
> with BY-SA sources, as well.
>
> Make sense? I'd love to get some pre-1914 shapefiles of Poland, Germany,
> Austria-Hungary, and Russia. Galicia, anyone?
>
> Thanks!
> Jeff
>
> On Tue, May 1, 2018 at 12:28 PM, Jonathan Masur <jmasur at bluewin.ch> wrote:
>
>> Hello everyone,
>>
>> I was told not to upload data of historical boundaries on OpenStreetMap
>> because that's not part of the project. Alas, it is hard to imagine today
>> for example which parts of Polands used to belong to Germany,
>> Autria-Hungary and Russia before 1914, as there is no trace of the previous
>> border in the modern world; The former international border could be a
>> simple communal border today, or even no border at all as two communes from
>> different pre-1914 countries could have merged.
>>
>> This leads me to being interested in Open Historical Map but alas the
>> project seems to be really, really at the stadium of getting started, since
>> few things are mapped at all. When it comes to boundaries, there's
>> absolutely nothing mapped; except part of the Grand duchy of Baden which I
>> previously mapped on OSM and someone tried to transfer it to OHM before
>> eventually giving up.
>>
>> So my questions are:
>>
>> 1) Is mapping of former countries boundary even realistic/doable on OHM?
>>
>> 2) Which sources are allowed when doing so? OSM has a very strict policy
>> when it comes to sources that outlaws any maps, including old maps; I think
>> OHM should allow using maps older than 70 years old (fred of copyright) as
>> sources or else it would be very difficult to draw previous borders (but
>> still possible, by looking at each commune's history individually).
>>
>> 3) Is it allowed to import modern communal borders from OSM as a base to
>> create relations including the villages which used to belong to a formerly
>> exisitng country ? I think this should be possible by doing a normal
>> overpass import in JOSM, then reviewing data, then upload to OHM instead of
>> OSM. However by doing this I risk pollyting OHM with my first experiements
>> as I'm not yet used to work with it.
>>
>> Best greetings,
>>
>> --
>> Jonathan Masur
>>
>>
>> _______________________________________________
>> Historic mailing list
>> Historic at openstreetmap.org
>> https://lists.openstreetmap.org/listinfo/historic
>>
>
>
>
> --
> 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
>
>
>
>
>

-- 
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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